Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
m  |
|---|
| M-discontinuity | |
|---|---|
| USE | Mohorovicic discontinuity |
| maars | |
|---|---|
| RT | craters |
| geomorphology | |
| phreatomagmatism | |
| volcanic features | |
| volcanism | |
| Maas River | |
|---|---|
| USE | Meuse River |
| Maas Valley | |
|---|---|
| USE | Meuse Valley |
| Maastricht Netherlands | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..Netherlands | |
| ...Limburg Netherlands | |
| ....Maastricht Netherlands | |
| UF | Maestricht Netherlands |
| SN | City near the German border in extreme SE Netherlands. |
| Maastrichtian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Maastrichtian | |
| USE | Maestrichtian |
| MAC 88104 | |
|---|---|
| BT | meteorites |
| .stony meteorites | |
| ..achondrites | |
| ...MAC 88104 | |
| BT | meteorites |
| .MacAlpine Hills Meteorites | |
| ..MAC 88104 | |
| RT | Moon |
| Antarctica | |
| lunar meteorites | |
| SN | Lunar meteorite paired with MAC 88105. Before 1995, also search MAC88104, and MAC88104/5. This term has multiple hierarchies. Added to Thesaurus in 1995. |
| MAC 88105 | |
|---|---|
| BT | meteorites |
| .stony meteorites | |
| ..achondrites | |
| ...MAC 88105 | |
| BT | meteorites |
| .MacAlpine Hills Meteorites | |
| ..MAC 88105 | |
| RT | Moon |
| Antarctica | |
| lunar meteorites | |
| SN | Lunar meteorite paired with MAC 88104. Before 1995, also search MAC88105 and MAC88104/5. This term has multiple hierarchies. Added to Thesaurus in 1995. |
| Macacu River | |
|---|---|
| BT | South America |
| .Brazil | |
| ..Rio de Janeiro Brazil | |
| ...Macacu River | |
| SN | Central Rio de Janeiro. |
| MacAlpine Hills Meteorites | |
|---|---|
| BT | meteorites |
| .MacAlpine Hills Meteorites | |
| NT | MAC 88104 |
| MAC 88105 | |
| RT | Moon |
| Antarctica | |
| lunar meteorites | |
| SN | Due to numbering and abbreviations of these meteorites, such as MAC88104/5 and MAC 88177, also search MAC by expanding or selecting from indexes while searching. Added to Thesaurus in 1995. |
| macaluba | |
|---|---|
| USE | mud volcanoes |
| Macanao Peninsula | |
|---|---|
| BT | South America |
| .Venezuela | |
| ..Venezuelan Islands | |
| ...Margarita Island | |
| ....Macanao Peninsula | |
| SN | On Margarita Island 15 miles off NE coast of Venezuela. This term has multiple hierarchies. |
| Macao | |
|---|---|
| SN | Not a valid GeoRef index term after 1971. Used in subfile G. See China; Guangdong China. |
| Macedonia | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Macedonia | |
| NT | Greek Macedonia |
| Yugoslav Macedonia | |
| RT | Serbia |
| Bulgaria | |
| Greece | |
| Serbo-Macedonian Massif | |
| SN | Region in Bulgaria, Greece, and Yugoslav Macedonia. Indexed with countries as applicable. |
| macerals | |
|---|---|
| NT | alginite |
| clarain | |
| durain | |
| exinite | |
| fusain | |
| huminite | |
| inertinite | |
| vitrain | |
| vitrinite | |
| UF | micropetrological unit |
| RT | coal |
| lithotypes | |
| petrography | |
| Machaeridia | |
|---|---|
| BT | malozoa |
| .Machaeridia | |
| machal Pradesh India | |
|---|---|
| NT | Chamba India |
| Halog India | |
| Kangra India | |
| Kinnaur India | |
| Mahasu India | |
| Mandi India | |
| Simla India | |
| machine-readable data | |
|---|---|
| USE | digital data |
| Macintosh | |
|---|---|
| RT | computer programs |
| computers | |
| data processing | |
| microcomputers | |
| models | |
| SN | Family of personal computers manufactured by Apple. In GeoRef, generally used only in discussion of the actual computer or computer programs it supports. Indexed with microcomputers or computer programs if applicable. |
| Mackay Idaho | |
|---|---|
| BT | United States |
| .Idaho | |
| ..Custer County Idaho | |
| ...Mackay Idaho | |
| SN | Town in S central Idaho. |
| Mackenzie | |
|---|---|
| SN | Not a valid term for GeoRef. See Mackenzie Mountains, Mackenzie Delta, Mackenzie District Northwest Territories, Mackenzie River or Mackenzie River valley as applicable. |
| Mackenzie Delta | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..Mackenzie District Northwest Territories | |
| ...Mackenzie Delta | |
| UF | Mackenzie River delta |
| RT | Beaufort-Mackenzie Basin |
| Mackenzie River | |
| SN | On Beaufort Sea in Mackenzie District. Also search Mackenzie. This term has multiple hierarchies. |
| Mackenzie District Northwest Territories | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..Mackenzie District Northwest Territories | |
| BT | Canada |
| .Northwest Territories | |
| ..Mackenzie District Northwest Territories | |
| NT | Agricola Lake |
| Contwoyto Lake | |
| Coppermine River | |
| Fort Good Hope Northwest Territories | |
| Great Bear Lake | |
| Great Slave Lake | |
| Inuvik Northwest Territories | |
| Lupin Mine | |
| Mackenzie Delta | |
| Muskox Intrusion | |
| Nonacho Basin | |
| Norman Wells Northwest Territories | |
| Pine Point mining district | |
| Richards Island | |
| South Nahanni River | |
| Tuktoyaktuk Peninsula | |
| Yellowknife Northwest Territories | |
| UF | District of Mackenzie |
| RT | Bear-Slave Operation |
| Root River | |
| Mackenzie River | |
| Horn Plateau Formation | |
| Mackenzie River valley | |
| Taltson magmatic zone | |
| SN | Central and W Northwest Territories. This term has multiple hierarchies. |
| Mackenzie Mountains | |
|---|---|
| BT | Canada |
| .Mackenzie Mountains | |
| RT | Yukon Territory |
| Northwest Territories | |
| Rocky Mountains | |
| SN | Also search Mackenzie and Canada. Indexed with territories as applicable. |
| Mackenzie River | |
|---|---|
| RT | Great Slave Lake |
| Mackenzie Delta | |
| Mackenzie District Northwest Territories | |
| Mackenzie River valley | |
| New Zealand | |
| Queensland Australia | |
| South Island | |
| SN | Flows from Great Slave Lake N to Beaufort Sea, W Mackenzie District, Northwest Territories. Also in N South Island, New Zealand. Also in E Queensland Australia. Search in combination with territory or state or country as applicable. Also index Mackenzie D |
| Mackenzie River delta | |
|---|---|
| USE | Mackenzie Delta |
| Mackenzie River valley | |
|---|---|
| UF | Mackenzie Valley |
| RT | Queensland Australia |
| Mackenzie District Northwest Territories | |
| New Zealand | |
| South Island | |
| Mackenzie River | |
| SN | W Mackenzie District, Northwest Territories. Also may occur in South Island, New Zealand or in E Queensland Australia. Also search Mackenzie; Mackenzie River. Search in combination with territory or country and/or state as applicable. Also index Mackenzie |
| Mackenzie Valley | |
|---|---|
| USE | Mackenzie River valley |
| Mackenzie-Beaufort Basin | |
|---|---|
| USE | Beaufort-Mackenzie Basin |
| Mackinac County Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Upper Peninsula | |
| ...Mackinac County Michigan | |
| mackinawite | |
|---|---|
| BT | sulfides |
| .mackinawite | |
| UF | kansite |
| Macleay River | |
|---|---|
| BT | Australasia |
| .Australia | |
| ..New South Wales Australia | |
| ...Macleay River | |
| SN | E New South Wales. |
| Macomb County Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Lower Peninsula | |
| ...Macomb County Michigan | |
| RT | Lake Saint Clair |
| SN | SE Michigan. |
| Macon County Alabama | |
|---|---|
| BT | United States |
| .Alabama | |
| ..Macon County Alabama | |
| SN | E Alabama. |
| Macon County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Macon County Georgia | |
| SN | Central Georgia. |
| Macon County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Macon County Illinois | |
| SN | Central Illinois. |
| Macon County Missouri | |
|---|---|
| BT | United States |
| .Missouri | |
| ..Macon County Missouri | |
| SN | N central Missouri. |
| Macon County North Carolina | |
|---|---|
| BT | United States |
| .North Carolina | |
| ..Macon County North Carolina | |
| SN | W North Carolina. |
| Macon County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Macon County Tennessee | |
| SN | N Tennessee. |
| Macon Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Bibb County Georgia | |
| ...Macon Georgia | |
| SN | City in central Georgia. |
| Macoupin County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Macoupin County Illinois | |
| Macquarie Island | |
|---|---|
| BT | West Pacific Ocean Islands |
| .Macquarie Island | |
| SN | 850 miles SE of Tasmania by whom it is administered. |
| Macquarie Ridge | |
|---|---|
| RT | Antarctic Ocean |
| DSDP Site 279 | |
| Pacific Ocean | |
| Southwest Pacific | |
| SN | Extends between Macquarie Island on S and South Island of New Zealand on N. Before 1995, Pacific Ocean was used as the broader term. Indexed with Southwest Pacific and/or Antarctic Ocean as applicable. |
| macrofossils | |
|---|---|
| USE | fossils |
| Macropodidae | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Metatheria | |
| ......Marsupialia | |
| .......Diprotodonta | |
| ........Macropodidae | |
| SN | Family. |
| Macroscelida | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Insectivora | |
| .......Macroscelida | |
| UF | Macroscelidea |
| Macroscelidea | |
|---|---|
| USE | Macroscelida |
| Mactra | |
|---|---|
| BT | Invertebrata |
| .Mollusca | |
| ..Bivalvia | |
| ...Mactra | |
| SN | Genus. |
| Madagascar | |
|---|---|
| BT | Africa |
| .Madagascar | |
| BT | Indian Ocean Islands |
| .Madagascar | |
| NT | Ambre Mountain |
| Andriamena Madagascar | |
| Antananarivo Madagascar | |
| Betsiboka Basin | |
| Sakoa Basin | |
| Tulear Basin | |
| UF | Malagasy Republic |
| SN | Country was called Malagasy Republic from 1958-1974. This term has multiple hierarchies. Added to Thesaurus in 1993. |
| Madagascar Basin | |
|---|---|
| BT | Indian Ocean |
| .Madagascar Basin | |
| RT | Leg 25 |
| DSDP Site 245 | |
| SN | SE of Madagascar. Also search Madagascar. |
| Madan Bulgaria | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Bulgaria | |
| ...Plovdiv Bulgaria | |
| ....Madan Bulgaria | |
| RT | Bulgarian Rhodope Mountains |
| SN | Village in SE Rhodope Mountains in S Bulgaria. |
| Madawaska County New Brunswick | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Maritime Provinces | |
| ...New Brunswick | |
| ....Madawaska County New Brunswick | |
| Madeira | |
|---|---|
| BT | Atlantic Ocean Islands |
| .Madeira | |
| NT | Porto Santo Island |
| UF | Madeira Archipelago |
| Madeira Island | |
| Madeira Islands | |
| Madeiras | |
| SN | Island group belonging to Portugal 600 miles SW of Lisbon and 400 miles W of Morocco. |
| Madeira abyssal plain | |
|---|---|
| BT | Atlantic Ocean |
| .North Atlantic | |
| ..Madeira abyssal plain | |
| RT | Leg 157 |
| ODP Site 950 | |
| ODP Site 951 | |
| ODP Site 952 | |
| SN | E North Atlantic. Added to Thesaurus in 1989. |
| Madeira Archipelago | |
|---|---|
| USE | Madeira |
| Madeira Island | |
|---|---|
| USE | Madeira |
| Madeira Islands | |
|---|---|
| USE | Madeira |
| Madeiras | |
|---|---|
| USE | Madeira |
| Maden Complex | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....Maden Complex | |
| RT | Turkey |
| SN | Added to Thesaurus in 1989. |
| Madera County California | |
|---|---|
| BT | United States |
| .California | |
| ..Madera County California | |
| RT | Mammoth Mountain |
| Yosemite National Park | |
| SN | Central California. |
| Madera Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Madera Formation | |
| RT | New Mexico |
| Colorado | |
| Magdalena Group | |
| Wild Cow Formation | |
| SN | In Magdalena Group. N and central New Mexico and S Colorado. Added to Thesaurus in 1989. |
| Madison Aquifer | |
|---|---|
| BT | United States |
| .Madison Aquifer | |
| RT | Wyoming |
| Montana | |
| North Dakota | |
| South Dakota | |
| Bighorn Basin | |
| Madison Group | |
| Great Plains | |
| SN | Indexed with states as applicable. Added to Thesaurus in 1989. |
| Madison County Alabama | |
|---|---|
| BT | United States |
| .Alabama | |
| ..Madison County Alabama | |
| SN | N Alabama. |
| Madison County Arkansas | |
|---|---|
| BT | United States |
| .Arkansas | |
| ..Madison County Arkansas | |
| SN | NW Arkansas. |
| Madison County Florida | |
|---|---|
| BT | United States |
| .Florida | |
| ..Madison County Florida | |
| SN | N Florida. |
| Madison County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Madison County Georgia | |
| SN | NE Georgia. |
| Madison County Idaho | |
|---|---|
| BT | United States |
| .Idaho | |
| ..Madison County Idaho | |
| SN | E Idaho. |
| Madison County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Madison County Illinois | |
| NT | Wood River Illinois |
| SN | Bounded by Mississippi River in SW Illinois. |
| Madison County Indiana | |
|---|---|
| BT | Indiana |
| .Madison County Indiana | |
| SN | E central Indiana. |
| Madison County Iowa | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Madison County Iowa | |
| SN | S central Iowa. |
| Madison County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Madison County Kentucky | |
| SN | Central Kentucky. |
| Madison County Mississippi | |
|---|---|
| BT | United States |
| .Mississippi | |
| ..Madison County Mississippi | |
| SN | Central Mississippi. |
| Madison County Missouri | |
|---|---|
| BT | United States |
| .Missouri | |
| ..Madison County Missouri | |
| SN | SE Missouri. |
| Madison County Montana | |
|---|---|
| BT | United States |
| .Montana | |
| ..Madison County Montana | |
| NT | Tobacco Root Mountains |
| RT | Gravelly Range |
| Madison Range | |
| Ruby Range | |
| SN | SW Montana. |
| Madison County Nebraska | |
|---|---|
| BT | United States |
| .Nebraska | |
| ..Madison County Nebraska | |
| SN | NE central Nebraska. |
| Madison County New York | |
|---|---|
| BT | United States |
| .New York | |
| ..Madison County New York | |
| RT | Oneida Lake |
| SN | Central New York. |
| Madison County North Carolina | |
|---|---|
| BT | United States |
| .North Carolina | |
| ..Madison County North Carolina | |
| SN | W North Carolina. |
| Madison County Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Madison County Ohio | |
| Madison County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Madison County Tennessee | |
| SN | W Tennessee. |
| Madison County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Madison County Texas | |
| SN | E central Texas. |
| Madison County Virginia | |
|---|---|
| BT | United States |
| .Virginia | |
| ..Madison County Virginia | |
| SN | N Virginia. |
| Madison Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Mississippian | |
| .....Madison Group | |
| RT | Idaho |
| Utah | |
| Wyoming | |
| Montana | |
| Colorado | |
| North Dakota | |
| South Dakota | |
| Madison Aquifer | |
| Charles Formation | |
| Lodgepole Formation | |
| Mission Canyon Limestone | |
| SN | Lower and Upper Mississippian. Consists of Lodgepole Limestone, Mission Canyon Limestone, and Charles Formation. |
| Madison Parish Louisiana | |
|---|---|
| BT | United States |
| .Louisiana | |
| ..Madison Parish Louisiana | |
| Madison Range | |
|---|---|
| RT | Gallatin County Montana |
| Madison County Montana | |
| Montana | |
| Rocky Mountains | |
| Spanish Peaks | |
| U. S. Rocky Mountains | |
| SN | SW Montana. Indexed with counties and U. S. Rocky Mountains or regions as applicable. Added to Thesaurus in 1985. |
| Madison Wisconsin | |
|---|---|
| BT | United States |
| .Wisconsin | |
| ..Dane County Wisconsin | |
| ...Madison Wisconsin | |
| RT | Lake Mendota |
| SN | City in S central Wisconsin. |
| Madoc Ontario | |
|---|---|
| BT | stings County Ontario |
| .Madoc Ontario | |
| SN | Village in SE Ontario. |
| Madonie Mountains | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Sicily Italy | |
| ....Madonie Mountains | |
| SN | NW central Sicily. |
| Madras India | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Tamil Nadu India | |
| ....Madras India | |
| SN | City on the Bay of Bengal in NE Tamil Nadu, SE India. |
| Madreporaria | |
|---|---|
| USE | Scleractinia |
| madrepores | |
|---|---|
| USE | Scleractinia |
| Madrid Basin | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Iberian Peninsula | |
| ...Spain | |
| ....Madrid Basin | |
| RT | Guadalajara Spain |
| Toledo Spain | |
| Madrid Spain | |
| Tagus Basin | |
| SN | Tertiary basin forming a large part of Tagus Basin, central Spain. Indexed with provinces as applicable. Added to Thesaurus in 1995. |
| Madrid City Spain | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Iberian Peninsula | |
| ...Spain | |
| ....Madrid Spain | |
| .....Madrid City Spain | |
| SN | Refers to only the city in central Spain. Before 1993, also search Madrid Spain. |
| Madrid Forma |
|---|
| Madrid Formation | |
|---|---|
| RT | Connecticut |
| Maine | |
| Massachusetts | |
| Mexico | |
| New Hampshire | |
| Silurian | |
| SN | Silurian of Connecticut, Maine, Massachusetts and New Hampshire. Also a formation in Mexico. Indexed with age as applicable. Added to Thesaurus in 1989. |
| Madrid Spain | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Iberian Peninsula | |
| ...Spain | |
| ....Madrid Spain | |
| NT | Madrid City Spain |
| RT | Sierra de Gredos |
| Sierra de Guadarrama | |
| New Castile Spain | |
| Madrid Basin | |
| SN | Refers only to the autonomous community and its coextensive province in central Spain. From 1981-1992, also search Madrid Province and Spain. For the city, see Madrid City Spain. |
| Maestrazgo Spain | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Iberian Peninsula | |
| ...Spain | |
| ....Maestrazgo Spain | |
| RT | Teruel Spain |
| Castellon Spain | |
| SN | Mountainous district in E Spain. Indexed with provinces as applicable. |
| Maestricht Netherlands | |
|---|---|
| USE | Maastricht Netherlands |
| Maestrichtian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Senonian | |
| ......Maestrichtian | |
| NT | lower Maestrichtian |
| upper Maestrichtian | |
| UF | Maastrichtian |
| RT | Rosario Formation |
| Roca Formation | |
| SN | Europe. Above Campanian, below Danian (Tertiary). |
| mafic | |
|---|---|
| SN | A valid term through 1977. See mafic composition. |
| mafic and ultramafic rocks | |
|---|---|
| SN | Used in subfile G. See ultramafics; ultramafic composition; mafic composition. |
| mafic composition | |
|---|---|
| RT | composition |
| igneous rocks | |
| mafic magmas | |
| ophiolite | |
| ultramafic composition | |
| SN | Before 1978, also search igneous rocks AND mafic. Also search basic rocks; mafic rocks. |
| mafic magmas | |
|---|---|
| BT | magmas |
| .mafic magmas | |
| RT | mafic composition |
| SN | Added to Thesaurus in 1981. |
| mafic rocks | |
|---|---|
| SN | Used in subfile N. Now use mafic composition. |
| Magadan Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Magadan Russian Federation | |
| BT | Asia |
| .Magadan Russian Federation | |
| NT | Okhotsk Massif |
| Omulevka River | |
| Taygonos Peninsula | |
| RT | Anadyr Basin |
| Chukchi Peninsula | |
| Okhotsk region | |
| Okhotsk-Chukchi volcanic belt | |
| Penzhina Bay | |
| Omolon River | |
| Kolyma River | |
| Kolyma Uplift | |
| Verkhoyansk region | |
| SN | Oblast including the city on N shore of Okhotsk Sea. Before 1993, Magadan Russian Republic was also used. This term has multiple hierarchies. |
| magadiite | |
|---|---|
| BT | silicates |
| .framework silicates | |
| ..scapolite group | |
| ...magadiite | |
| Magallanes Chile | |
|---|---|
| BT | South America |
| .Chile | |
| ..Magallanes Chile | |
| RT | Patagonia |
| Tierra del Fuego | |
| Staten Island | |
| Tierra del Fuego Island | |
| SN | Southernmost province. |
| Magdalen Islands | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Magdalen Islands | |
| UF | Iles Madeleine |
| RT | Gulf of Saint Lawrence |
| Atlantic Ocean Islands | |
| SN | Group of 13 islands in S central Gulf of Saint Lawrence in E Quebec. Added to Thesaurus in 1989. |
| Magdalena | |
|---|---|
| SN | No longer a valid term for GeoRef. As of 1989, use in combination with state name for the village in Socorro County New Mexico. As of 1993, see Magdalena Colombia for the department in N Colombia; use in combination with country name for the towns in Buen |
| Magdalena Colombia | |
|---|---|
| BT | South America |
| .Colombia | |
| ..Magdalena Colombia | |
| NT | Santa Marta Colombia |
| RT | Magdalena River |
| SN | Department in N Colombia. |
| Magdalena Delta | |
|---|---|
| BT | South America |
| .Colombia | |
| ..Magdalena Delta | |
| RT | Bolivar Colombia |
| SN | At the mouth of the Magdalena River on the Caribbean Sea near Barranquilla. |
| Magdalena Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Magdalena Group | |
| RT | Permian |
| Pennsylvanian | |
| New Mexico | |
| Texas | |
| Holder Formation | |
| Laborcita Formation | |
| Madera Formation | |
| Sandia Formation | |
| SN | New Mexico and W Texas. Includes Laborcita Formation, Madera Formation, Sandia Formation. Indexed with ages as applicable. Added to Thesaurus in 1989. |
| Magdalena Mountains | |
|---|---|
| RT | Socorro County New Mexico |
| SN | In Socorro County in W central New Mexico. Indexed with county or regions as applicable. |
| Magdalena New Mexico | |
|---|---|
| BT | United States |
| .New Mexico | |
| ..Socorro County New Mexico | |
| ...Magdalena New Mexico | |
| SN | Village and mining center in W central New Mexico. |
| Magdalena River | |
|---|---|
| BT | South America |
| .Colombia | |
| ..Magdalena River | |
| RT | Magdalena Colombia |
| Magdalena Valley | |
| SN | Rises on E slope of Andes in S Colombia and flows N into the Caribbean Sea near Barranquilla. |
| Magdalena Valley | |
|---|---|
| BT | South America |
| .Colombia | |
| ..Magdalena Valley | |
| RT | Magdalena River |
| SN | River valley extending from NW to SW Colombia. |
| Magdalenian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Stone Age | |
| ....Paleolithic | |
| .....Magdalenian | |
| RT | Pleistocene |
| archaeology | |
| Quaternary | |
| SN | Archaeological classification. Europe, North Africa. Upper Paleolithic. |
| Magdeburg Bezirk | |
|---|---|
| SN | No longer a valid term for GeoRef. District in W central East Germany. See Magdeburg Germany. |
| Magdeburg Germany | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Saxony-Anhalt Germany | |
| ....Magdeburg Germany | |
| SN | City in Saxony-Anhalt, central Germany. As of 1981, Magdeburg refers to only the city in N central Germany. Before 1981, it also included the East German district. |
| Magellan Program | |
|---|---|
| UF | Venus Radar Mapper |
| RT | planetology |
| geophysical methods | |
| geophysical surveys | |
| photogrammetry | |
| remote sensing | |
| Venus | |
| extraterrestrial geology | |
| imagery | |
| radar methods | |
| Galileo Program | |
| image enhancement | |
| SN | Added to Thesaurus in 1993. |
| maghemite | |
|---|---|
| BT | oxides |
| .maghemite | |
| UF | oxymagnite |
| RT | iron oxides |
| spinel group | |
| titanomaghemite | |
| Maghreb | |
|---|---|
| BT | Africa |
| .North Africa | |
| ..Maghreb | |
| RT | Algeria |
| Egypt | |
| Morocco | |
| Tunisia | |
| Libya | |
| SN | Region N of the Sahara. Indexed with countries as applicable. |
| magma |
|---|
| magma chambers | |
|---|---|
| UF | chambers, magma |
| magma reservoir | |
| RT | magmas |
| intrusions | |
| magma contamination | |
|---|---|
| UF | contamination, magma |
| RT | magmas |
| anatexis | |
| assimilation | |
| palingenesis | |
| country rocks | |
| emplacement | |
| hybridization | |
| intrusions | |
| magma transport | |
| layered intrusions | |
| SN | Also search magmas and contamination. Added to Thesaurus in 1995. |
| magma oceans | |
|---|---|
| RT | core |
| crust | |
| Earth | |
| extraterrestrial geology | |
| interior | |
| magmas | |
| mantle | |
| Moon | |
| planetology | |
| SN | Added to Thesaurus in 1995. |
| magma reservoir | |
|---|---|
| USE | magma chambers |
| magma transport | |
|---|---|
| RT | assimilation |
| chemical dispersion | |
| emplacement | |
| flow mechanism | |
| hybridization | |
| magma contamination | |
| magmas | |
| melting | |
| metasomatism | |
| migration of elements | |
| mobilization | |
| movement | |
| partial melting | |
| pneumatolysis | |
| processes | |
| transport | |
| SN | Includes various processes e.g. emplacement. Also search specific processes and (magmas AND (transport or movement)). Indexed with migration of elements or mobilization if applicable. |
| magmas | |
|---|---|
| NT | acidic magmas |
| mafic magmas | |
| RT | anatexis |
| assimilation | |
| asthenosphere | |
| country rocks | |
| crust | |
| crystal fractionation | |
| crystal zoning | |
| crystallites | |
| crystallization | |
| cumulates | |
| effusion | |
| emplacement | |
| fractional crystallization | |
| gases | |
| HIMU | |
| hot spots | |
| hybridization | |
| igneous rocks | |
| immiscibility | |
| inclusions | |
| i | |
| SN | Used for naturally occurring, mobile rock material, generated within the Earth and capable of intrusion and extrusion. |
| magmas and magmatic differentiation | |
|---|---|
| SN | Not a valid GeoRef index term after 1970. Was used in subfile N. See magmatic differentiation. |
| magmatic associations | |
|---|---|
| RT | magmas |
| magmatic differentiation | |
| SN | Added to Thesaurus in 1981. |
| magmatic differentiation | |
|---|---|
| RT | crystal fractionation |
| crystal zoning | |
| crystallization | |
| differentiation | |
| fractional crystallization | |
| hybridization | |
| igneous rocks | |
| intrusions | |
| magmas | |
| magmatic associations | |
| melts | |
| partial melting | |
| reaction rims | |
| SN | Before 1993, also search magmas AND differentiation. Added to Thesaurus in 1993. |
| magmatism | |
|---|---|
| RT | controls |
| geosynclines | |
| granitization | |
| intramagmatic deposits | |
| intrusions | |
| magmas | |
| mineral deposits, genesis | |
| nuees ardentes | |
| orogeny | |
| phreatomagmatism | |
| plutonic rocks | |
| processes | |
| thermal alteration | |
| volcanism | |
| volcanology | |
| SN | From 1974-1997, also search igneous activity, or, for economic papers, also search igneous processes. Also see magmas. |
| magnesian calcite | |
|---|---|
| BT | carbonates |
| .magnesian calcite | |
| UF | magnesium calcite |
| RT | calcite |
| magnesian limestone | |
|---|---|
| USE | dolomitic limestone |
| magnesian silicates | |
|---|---|
| BT | silicates |
| .magnesian silicates | |
| UF | magnesium silicates |
| RT | mantle |
| phase transitions | |
| wadsleyite | |
| magnesium | |
| perovskite structure | |
| spinel structure | |
| SN | Also search magnesium silicates. This term is often used to describe experimental studies of mantle material. Also see specific minerals. Also index specific mineral names if available. |
| magnesian spar | |
|---|---|
| USE | dolomite |
| magnesioferrite | |
|---|---|
| BT | oxides |
| .magnesioferrite | |
| UF | magnoferrite |
| RT | iron oxides |
| spinel group | |
| magnesioriebeckite | |
|---|---|
| BT | silicates |
| .chain silicates | |
| ..amphibole group | |
| ...clinoamphibole | |
| ....magnesioriebeckite | |
| magnesiowustite | |
|---|---|
| BT | oxides |
| .magnesiowustite | |
| RT | iron oxides |
| wuestite | |
| SN | Also search magnesiowuestite. |
| magnesite | |
|---|---|
| BT | carbonates |
| .magnesite | |
| RT | magnesite deposits |
| SN | As of 1981, use magnesite deposits for magnesite as a commodity. |
| magnesite deposits | |
|---|---|
| RT | magnesite |
| refractory materials | |
| SN | See List C for use as a commodity term. |
| magnesium | |
|---|---|
| BT | metals |
| .alkaline earth metals | |
| ..magnesium | |
| NT | magnesium ion |
| Mg-25/Mg-24 | |
| Mg-26 | |
| Mg-26/Mg-24 | |
| UF | Mg |
| RT | magnesian silicates |
| magnesium ores | |
| SN | Chemical element. Use magnesium ores for magnesium as a commodity. |
| magnesium calcite | |
|---|---|
| USE | magnesian calcite |
| magnesium ion | |
|---|---|
| BT | metals |
| .alkaline earth metals | |
| ..magnesium | |
| ...magnesium ion | |
| RT | geochemistry |
| ions | |
| SN | Added to Thesaurus in 1985. |
| magnesium ores | |
|---|---|
| BT | metal ores |
| .magnesium ores | |
| RT | magnesium |
| magnesium silicates | |
|---|---|
| USE | magnesian silicates |
| magnetic anomalies | |
|---|---|
| RT | anomalies |
| geophysical methods | |
| geophysical surveys | |
| gravity anomalies | |
| magnetic field | |
| magnetic methods | |
| magnetic profiles | |
| nonmagnetic minerals | |
| paleomagnetism | |
| POGO | |
| sea-floor spreading | |
| magnetic declination | |
|---|---|
| RT | magnetic field |
| paleomagnetism | |
| SN | Also search declination AND (magnetic field OR paleomagnetism). |
| magnetic domains | |
|---|---|
| NT | multidomains |
| pseudo-single domains | |
| single domains | |
| RT | domains |
| magnetic properties | |
| paleomagnetism | |
| magnetic exploration | |
|---|---|
| SN | Not a valid index term after 1971. Used in subfiles G and N. Now use magnetic methods or magnetic logging. |
| magnetic field | |
|---|---|
| UF | field, magnetic |
| RT | cosmic rays |
| alternating field demagnetization | |
| electrical field | |
| Earth | |
| annual variations | |
| Earth-current methods | |
| currents | |
| coastal effects | |
| coercivity | |
| core | |
| dynamos | |
| dipole moment | |
| diurnal variations | |
| electromagnetic field | |
| electromagnetic induction | |
| electromagnetic | |
| SN | Before 1974, also search magnetic fields. Before 1972, was sometimes used in combination with planetary bodies, therefore also search magnetic field, Moon or magnetic field, Mars as applicable. |
| magnetic field of the Earth | |
|---|---|
| SN | Not a valid GeoRef index term after 1970. Used in subfile N. |
| magnetic hysteresis | |
|---|---|
| RT | demagnetization |
| hysteresis | |
| magnetization | |
| nonmagnetic minerals | |
| paleomagnetism | |
| properties | |
| SN | Before 1981, also search hysteresis AND (paleomagnetism OR magnetization OR demagnetization OR magnetic). Added to Thesaurus in 1981. |
| magnetic inclination | |
|---|---|
| UF | inclination, magnetic |
| RT | paleomagnetism |
| magnetic field | |
| inclinometers | |
| SN | Also search inclination AND (magnetic field OR paleomagnetism). Added to Thesaurus in 1981. |
| magnetic intensity | |
|---|---|
| RT | intensity |
| magnetic field | |
| paleomagnetism | |
| SN | Added to Thesaurus in 1981. |
| magnetic iron ore | |
|---|---|
| USE | magnetite |
| magnetic logging | |
|---|---|
| BT | well-logging |
| .magnetic logging | |
| RT | magnetic methods |
| electromagnetic logging | |
| SN | Added to Thesaurus in 1984. |
| magnetic methods | |
|---|---|
| BT | geophysical methods |
| .magnetic methods | |
| RT | geophysical surveys |
| aeromagnetic maps | |
| airborne methods | |
| magnetic survey maps | |
| magnetic field | |
| magnetic anomalies | |
| audiomagnetotelluric methods | |
| CSAMT methods | |
| magnetic properties | |
| deep magnetic sounding | |
| magnetic logging | |
| nonmagnetic minerals | |
| magnetometers | |
| Magsat | |
| SN | Before 1974, also search aeromagnetic surveys; aeromagnetic. For surveys, search with geophysical surveys and an area. For surveys, also index geophysical surveys and the area. |
| magnetic minerals | |
|---|---|
| RT | ilmenite |
| magnetic properties | |
| magnetite | |
| minerals | |
| titanomagnetite | |
| magnetic polarization | |
|---|---|
| USE | magnetization |
| magnetic profiles | |
|---|---|
| BT | geophysical profiles |
| .magnetic profiles | |
| RT | geophysical methods |
| geophysical surveys | |
| magnetic anomalies | |
| SN | Added to Thesaurus in 1995. |
| magnetic properties | |
|---|---|
| RT | Curie point |
| magnetic domains | |
| magnetic methods | |
| magnetic minerals | |
| magnetic susceptibility | |
| nonmagnetic minerals | |
| properties | |
| remanent magnetization | |
| magnetic storms | |
|---|---|
| SN | As of 1993, no longer a valid term for GeoRef. Usually out-of-scope. Used with magnetosphere. |
| magnetic survey maps | |
|---|---|
| BT | maps |
| .magnetic survey maps | |
| RT | geophysical methods |
| geophysical surveys | |
| aeromagnetic maps | |
| geophysical survey maps | |
| magnetic methods | |
| SN | Before 1978, also search maps AND magnetic methods. Also search maps AND geophysical surveys AND magnetic methods with area. |
| magnetic susceptibility anisotropy | |
|---|---|
| USE | magnetic susceptibility |
| magnetic tail | |
|---|---|
| SN | As of 1993, no longer a valid term for GeoRef. Usually out-of-scope. Used with magnetosphere. |
| magnetism, paleo- | |
|---|---|
| USE | paleomagnetism |
| magnetite | |
|---|---|
| BT | oxides |
| .magnetite | |
| UF | magnetic iron ore |
| octahedral iron ore | |
| RT | heavy minerals |
| iron ores | |
| iron oxides | |
| iron minerals | |
| spinel group | |
| magnetic minerals | |
| titanomagnetite | |
| SN | May be used as a mineral. As of 1981, may be used as a commodity term. |
| magnetohydrodynamics | |
|---|---|
| RT | core |
| magnetic field | |
| magnetometers | |
|---|---|
| RT | instruments |
| magnetic field | |
| magnetic methods | |
| SQUID | |
| magnetopause | |
|---|---|
| SN | As of 1993, no longer a valid term for GeoRef. Usually out-of-scope. Used with magnetosphere. |
| magnetosheath | |
|---|---|
| SN | As of 1993, no longer a valid term for GeoRef. Usually out-of-scope. Used with magnetosphere. |
| magnetosphere | |
|---|---|
| SN | As of 1993, no longer a valid term for GeoRef. Usually out-of-scope. |
| magnetostratigraphy | |
|---|---|
| RT | paleomagnetism |
| stratigraphy | |
| magnetotelluric exploration | |
|---|---|
| SN | Not a valid GeoRef index term after 1971. Used in subfiles G and N. Now use magnetotelluric methods. |
| magnetotelluric methods | |
|---|---|
| BT | geophysical methods |
| .magnetotelluric methods | |
| RT | geophysical surveys |
| electrical field | |
| magnetic field | |
| audiomagnetotelluric methods | |
| Earth-current methods | |
| electromagnetic methods | |
| CSAMT methods | |
| electromagnetic field | |
| SQUID | |
| variometers | |
| SN | For surveys, search with geophysical surveys and an area. For surveys, also index geophysical surveys and the area. |
| Magnitogorsk Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Chelyabinsk Russian Federation | |
| ...Magnitogorsk Russian Federation | |
| BT | Asia |
| .Magnitogorsk Russian Federation | |
| SN | City just E of the South Urals in Chelyabinsk Oblast. Before 1993, Magnitogorsk Russian Republic was also used. This term has multiple hierarchies. |
| magnitude | |
|---|---|
| UF | earthquake magnitude |
| RT | earthquakes |
| seismic intensity | |
| scale factor | |
| intensity | |
| modified Mercalli scale | |
| Richter Scale | |
| SN | As of 1981, restricted to magnitude of earthquakes. |
| magnitude-frequency ratio | |
|---|---|
| RT | earthquakes |
| seismology | |
| SN | Added to Thesaurus in 1981. |
| magnoferrite | |
|---|---|
| USE | magnesioferrite |
| Magnoliidae | |
|---|---|
| BT | Plantae |
| .Spermatophyta | |
| ..Angiospermae | |
| ...Dicotyledoneae | |
| ....Magnoliidae | |
| Magoffin County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Magoffin County Kentucky | |
| Magothy Aquifer | |
|---|---|
| BT | United States |
| .Magothy Aquifer | |
| RT | New York |
| Maryland | |
| Delaware | |
| New Jersey | |
| Magothy Formation | |
| SN | Indexed with states as applicable. Added to Thesaurus in 1989. |
| Magothy Fo |
|---|
| Magothy Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Magothy Formation | |
| RT | New York |
| Maryland | |
| Delaware | |
| New Jersey | |
| Magothy Aquifer | |
| SN | Consists essentially of light-gray crossbedded coarse sand containing small amounts of glauconite and pyrite; particles of carbonaceous matter or lignite common throughout. |
| Magsat | |
|---|---|
| RT | geophysical methods |
| geophysical surveys | |
| magnetic methods | |
| remote sensing | |
| satellite methods | |
| SN | Added to Thesaurus in 1985. |
| Magura Bangladesh | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..Bangladesh | |
| ...Magura Bangladesh | |
| SN | Village W of Dacca in Bangladesh. |
| Mahakam Delta | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Indonesia | |
| ...Kalimantan Indonesia | |
| ....Mahakam Delta | |
| SN | E Kalimantan, Indonesia. This term has multiple hierarchies. Added to Thesaurus in 1989. |
| Mahanadi Valley | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Mahanadi Valley | |
| RT | Madhya Pradesh India |
| Orissa India | |
| SN | River valley. Also search Mahanadi River. Indexed with states as applicable. |
| Mahantango Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Devonian | |
| ....Middle Devonian | |
| .....Mahantango Formation | |
| RT | Pennsylvania |
| Hamilton Group | |
| SN | Central Pennsylvania. In Hamilton Group. Consists principally of greenish-gray, thin- to medium-bedded slightly carbonaceous shale. Sporadic sandstone zones appear throughout area and thicken eastward. In central Pennsylvania. |
| Maharashtra India | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Maharashtra India | |
| NT | Bhandara India |
| Bombay India | |
| Jamkhandi India | |
| Koyna Dam | |
| Koyna River | |
| Lonar Crater | |
| Nagpur India | |
| Poona India | |
| Wardha River valley | |
| RT | Deccan Plateau |
| Godavari River | |
| Godavari Valley | |
| Krishna River | |
| Pranhita-Godavari Valley | |
| Kaladgi System | |
| Kamthi Formation | |
| Latur earthquake 1993 | |
| Satpura Range | |
| SN | State in W central India. |
| Mahaska County Iowa | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Mahaska County Iowa | |
| SN | S central Iowa. |
| Mahasu India | |
|---|---|
| BT | machal Pradesh India |
| .Mahasu India | |
| SN | District in N India. |
| Mahe Island | |
|---|---|
| BT | Indian Ocean Islands |
| .Seychelles | |
| ..Mahe Island | |
| RT | Indian Ocean |
| SN | Most important of Seychelles, a British colony, 1100 miles E of Kenya and 700 miles N of Madagascar. Also search Mahe. |
| Mahnomen County Minnesota | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Mahnomen County Minnesota | |
| Mahogany Zone | |
|---|---|
| BT | United States |
| .Colorado | |
| ..Mahogany Zone | |
| RT | U. S. Rocky Mountains |
| SN | NW Colorado. Indexed with counties or regions as applicable. Added to Thesaurus in 1985. |
| Mahoning County Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Mahoning County Ohio | |
| SN | E Ohio. |
| Maikop Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Krasnodar Russian Federation | |
| ...Maikop Russian Federation | |
| UF | Maykop Russian Federation |
| SN | City in Adygey Autonomous Oblast in the Northern Caucusus. Before 1993, Maikop Russian Republic was also used. This term has multiple hierarchies. |
| Maikop Series | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Tertiary | |
| ....Maikop Series | |
| RT | Russian Federation |
| Crimea Ukraine | |
| Ukraine | |
| SN | Oligocene-Miocene. The following horizons have been established: Zuramakent, Riki, Mutsidakal, Miatly, and Khadum. Northern Caucasus and Crimea. |
| Maimecha River | |
|---|---|
| USE | Maymecha River |
| Maimecha-Kotui | |
|---|---|
| USE | Maymecha-Kotuy |
| Main Boundary Fault | |
|---|---|
| BT | Asia |
| .Main Boundary Fault | |
| RT | Indian Peninsula |
| India | |
| Pakistan | |
| Himalayas | |
| Nepal | |
| SN | Indexed with countries as applicable. Added to Thesaurus in 1989. |
| Main Central Thrust | |
|---|---|
| BT | Asia |
| .Main Central Thrust | |
| RT | Indian Peninsula |
| India | |
| Pakistan | |
| Himalayas | |
| Nepal | |
| SN | Indexed with countries as applicable. Added to Thesaurus in 1989. |
| main phase | |
|---|---|
| SN | As of 1993, no longer a valid term for GeoRef. Usually out-of-scope. Used with magnetic storms. |
| Main River | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Main River | |
| RT | Bavaria Germany |
| Baden-Wurttemberg Germany | |
| Hesse Germany | |
| SN | Also search Main. Indexed with states as applicable. |
| main shocks | |
|---|---|
| RT | aftershocks |
| earthquakes | |
| foreshocks | |
| seismology | |
| SN | Added to Thesaurus in 1985. |
| Maine-et-Loire France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Maine-et-Loire France | |
| SN | Department in NW central France. |
| maintenance | |
|---|---|
| RT | reservoirs |
| siltation | |
| Mainz Basin | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Mainz Basin | |
| RT | Rhineland-Palatinate Germany |
| Hesse Germany | |
| Mainz Germany | |
| SN | Area around confluence of the Main and Rhine Rivers. Indexed with states as applicable. |
| Mainz Germany | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Rhineland-Palatinate Germany | |
| ....Mainz Germany | |
| RT | Mainz Basin |
| SN | City on the Rhine River in E Rhineland-Palatinate, SW Germany. |
| Maiolica Limestone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Maiolica Limestone | |
| RT | Jurassic |
| Cretaceous | |
| Italy | |
| Lombardy Italy | |
| SN | Jurassic-Cretaceous. White, marly limestone. In Lombardy, Italy. Indexed with ages as applicable. |
| Maizuru Belt | |
|---|---|
| BT | nshu |
| .Maizuru Belt | |
| RT | Kyoto Japan |
| SN | S Honshu, Japan. Added to Thesaurus in 1989. |
| Maizuru Japan | |
|---|---|
| BT | nshu |
| .Kyoto Japan | |
| ..Maizuru Japan | |
| SN | City in Kyoto Prefecture in central Honshu. |
| Maja Valles | |
|---|---|
| BT | Mars |
| .Maja Valles | |
| UF | Maja Vallis |
| SN | Between Lunae Planum and Chryse Planitia. |
| Maja Vallis | |
|---|---|
| USE | Maja Valles |
| Majdan Pek Yugoslavia | |
|---|---|
| USE | Majdanpek Yugoslavia |
| Majdanpek Yugoslavia | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Yugoslavia | |
| ...Serbia | |
| ....Majdanpek Yugoslavia | |
| UF | Majdan Pek Yugoslavia |
| SN | City in E Serbia. |
| Major County Oklahoma | |
|---|---|
| BT | United States |
| .Oklahoma | |
| ..Major County Oklahoma | |
| SN | NW Oklahoma. |
| major elements | |
|---|---|
| RT | chemical elements |
| major-element analyses | |
| minor elements | |
| nutrients | |
| trace elements | |
| major-element analyses | |
|---|---|
| RT | analysis |
| chemical analysis | |
| chemical elements | |
| major elements | |
| minor-element analyses | |
| spectroscopy | |
| trace-element analyses | |
| SN | For analytical methods. For data, see material name. |
| Majorca | |
|---|---|
| BT | Mediterranean region |
| .Balearic Islands | |
| ..Majorca | |
| NT | Palma Spain |
| UF | Mallorca |
| RT | Cap Blanc |
| SN | Largest of Spain's Balearic Islands off E coast of Spanish mainland. This term has multiple hierarchies. |
| majorite | |
|---|---|
| BT | silicates |
| .orthosilicates | |
| ..nesosilicates | |
| ...garnet group | |
| ....majorite | |
| RT | meteorites |
| SN | Meteorite mineral. |
| Majunga Basin | |
|---|---|
| USE | Betsiboka Basin |
| Makarov Basin | |
|---|---|
| BT | Arctic Ocean |
| .Makarov Basin | |
| RT | Amerasia Basin |
| Lomonosov Ridge | |
| polar regions | |
| North Pole | |
| SN | Lies between the Meldeleyev and Lomonosov ridges and the Alpha Cordillera in the Amerasia Basin in the Arctic Ocean offshore Canada and Greenland. Added to Thesaurus in 1989. |
| Makhachkala Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Dagestan Russian Federation | |
| ...Makhachkala Russian Federation | |
| SN | City in former Dagestan Autonomous Soviet Socialist Republic on Caspian Sea. Before 1993, Makhachkala Russian Republic was also used. Before 1978, also search Petrovsk. This term has multiple hierarchies. |
| Makhtesh Ramon | |
|---|---|
| BT | Asia |
| .Middle East | |
| ..Israel | |
| ...Makhtesh Ramon | |
| RT | Negev |
| SN | Canyon in the Negev, Southern Israel. |
| Makushin | |
|---|---|
| BT | United States |
| .Alaska | |
| ..Southwestern Alaska | |
| ...Aleutian Islands | |
| ....Unalaska Island | |
| .....Makushin | |
| UF | Makushin Volcano |
| RT | volcanoes |
| SN | Volcano. Unalaska Island, Fox Islands, Aleutian Islands, SW Alaska. Added to Thesaurus in 1989. |
| Makushin Volcano | |
|---|---|
| USE | Makushin |
| Malacca Strait | |
|---|---|
| USE | Strait of Malacca |
| Malacca Straits | |
|---|---|
| USE | Strait of Malacca |
| malachite | |
|---|---|
| BT | carbonates |
| .malachite | |
| RT | copper ores |
| copper minerals | |
| Malacostraca | |
|---|---|
| BT | Invertebrata |
| .Arthropoda | |
| ..Mandibulata | |
| ...Crustacea | |
| ....Malacostraca | |
| NT | Brachyura |
| Callianassa | |
| Ophiomorpha | |
| UF | Decapoda |
| Malaga City Spain | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Iberian Peninsula | |
| ...Spain | |
| ....Andalusia Spain | |
| .....Malaga Spain | |
| ......Malaga City Spain | |
| SN | Refes to only the city in S Spain on the Mediterranean Sea. Before 1993, also search Malaga Spain. |
| Malaga Spain | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Iberian Peninsula | |
| ...Spain | |
| ....Andalusia Spain | |
| .....Malaga Spain | |
| NT | Malaga City Spain |
| RT | Serrania de Ronda |
| SN | In S central Spain. Refers only to the province. From 1981-1992, also search Malaga Province and Spain. For the city, see Malaga City Spain. |
| Malagasy Republic | |
|---|---|
| USE | Madagascar |
| Malaita | |
|---|---|
| BT | Oceania |
| .Melanesia | |
| ..Solomon Islands | |
| ...Malaita | |
| RT | Pacific Ocean |
| SN | Long, narrow island in SE Solomon Islands. |
| Malakal Sudan | |
|---|---|
| BT | Africa |
| .East Africa | |
| ..Sudan | |
| ...Malakal Sudan | |
| SN | Town in S Sudan. |
| Malatya Turkey | |
|---|---|
| BT | Asia |
| .Middle East | |
| ..Turkey | |
| ...Malatya Turkey | |
| SN | Province in E central Anatolia. Also a city. |
| Malawi | |
|---|---|
| BT | Africa |
| .East Africa | |
| ..Malawi | |
| UF | Nyasaland |
| RT | East African Rift |
| Lake Malawi | |
| Mozambique Belt | |
| SN | Formerly Nyasaland. At one time it was part of British Central African Protectorate and later part of the Federation of Rhodesia and Nyasaland. |
| Malay Archipelago | |
|---|---|
| NT | Borneo |
| New Guinea | |
| Timor | |
| RT | Asia |
| Australasia | |
| Celebes Sea | |
| Far East | |
| Indonesia | |
| Malaysia | |
| Oceania | |
| Papua New Guinea | |
| Sumatra | |
| West Pacific Ocean Islands | |
| SN | Largest island group in world off SE coast of Asia between Pacific and Indian oceans. Before 1981, a narrower term of Asia. Indexed with countries as applicable. |
| Malay Basin | |
|---|---|
| BT | Pacific Ocean |
| .North Pacific | |
| ..Northwest Pacific | |
| ...South China Sea | |
| ....Malay Basin | |
| SN | S South China Sea. This term has multiple hierarchies. |
| Malay Peninsula | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Malay Peninsula | |
| NT | West Malaysia |
| RT | Malaysia |
| Thailand | |
| Strait of Malacca | |
| Indochina | |
| SN | Comprises West Malaysia and SW part of Thailand. Indexed with countries as applicable. |
| Malaya | |
|---|---|
| USE | Malaysia |
| SN | Former Federation of Malaya which was a federation of 9 Malay states of the Malay Peninsula, plus 2 of the Straits settlements, Malacca and Penang. It constituted what is now West Malaysia of the present Federation of Malaysia. |
| malayaite | |
|---|---|
| BT | silicates |
| .ring silicates | |
| ..malayaite | |
| malayas | |
|---|---|
| NT | Kumaun Himalayas |
| Lesser Himalayas | |
| Mount Everest | |
| Zanskar Range | |
| Malaysia | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Malaysia | |
| NT | East Malaysia |
| West Malaysia | |
| UF | Malaya |
| RT | ASEAN |
| Malay Archipelago | |
| Borneo | |
| Indochina | |
| Cathaysia | |
| J Sandstone | |
| Malay Peninsula | |
| SN | Or officially known as Federation of Malaysia. Independent federation, SE Asia, consisting of eleven states (West Malaysia) on the Malay Peninsula and two states (East Malaysia) on the island of Borneo. |
| Maldive Archipelago | |
|---|---|
| USE | Maldive Islands |
| Maldive Islands | |
|---|---|
| BT | Indian Ocean Islands |
| .Maldive Islands | |
| UF | Maldive Archipelago |
| SN | Group of 19 atolls in the Indian Ocean 300 miles SW of southern tip of India. |
| Malekula | |
|---|---|
| BT | Oceania |
| .Melanesia | |
| ..Vanuatu | |
| ...Malekula | |
| RT | Pacific Ocean |
| SN | An island of Vanuatu which lies E of Queensland, Australia, between the Solomon Islands and New Caledonia. |
| Malgobek Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Malgobek Russian Federation | |
| RT | Chechen-Ingush Russian Federation |
| North Ossetia Russian Federation | |
| SN | City in former North Ossetian Autonomous Soviet Socialist Republic in the Northern Caucasus. A petroleum producing center. Also a town in Chechen-Ingush. Before 1993, Malgobek Russian Republic was also used. Indexed with regions as applicable. |
| Malheur County Oregon | |
|---|---|
| BT | United States |
| .Oregon | |
| ..Malheur County Oregon | |
| RT | Owyhee Mountains |
| SN | SE Oregon. |
| Mali-Niger Syneclise | |
|---|---|
| BT | Africa |
| .West Africa | |
| ..Mali-Niger Syneclise | |
| UF | Mali-Nigeria Syneclise |
| RT | Nigeria |
| Mali | |
| Niger | |
| Benin | |
| SN | Indexed with countries as applicable. |
| Mali-Nigeria Syneclise | |
|---|---|
| USE | Mali-Niger Syneclise |
| Malines Belgium | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..Belgium | |
| ...Antwerp Belgium | |
| ....Malines Belgium | |
| UF | Mechelen Belgium |
| Mechlin Belgium | |
| SN | City N of Brussels. |
| Mallorca | |
|---|---|
| USE | Majorca |
| Malm | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Jurassic | |
| ....Upper Jurassic | |
| .....Malm | |
| RT | Oxfordian |
| Kimmeridgian | |
| Lusitanian | |
| Portlandian | |
| Volgian | |
| SN | Middle Europe. Above Dogger, below Neocomian (Cretaceous). |
| Malmani Subgroup | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Malmani Subgroup | |
| RT | South Africa |
| Transvaal Supergroup | |
| SN | Proterozoic. South Africa. In Transvaal Supergroup. Added to Thesaurus in 1993. |
| Malmohus Sweden | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..Scandinavia | |
| ...Sweden | |
| ....Malmohus Sweden | |
| NT | Halsingborg Sweden |
| Lund Sweden | |
| RT | Skane |
| SN | County in S Sweden. |
| malozoa | |
|---|---|
| NT | Homoiostelea |
| Homostelea | |
| Machaeridia | |
| Stylophora | |
| Malta | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Malta | |
| RT | Mediterranean region |
| Mediterranean Sea | |
| SN | Comprises 3 islands. |
| Malvern | |
|---|---|
| SN | No longer a valid term for GeoRef. See Malvern Hills or Malvern Meteorite. Was also used for the former urban district in Hereford and Worcester County in W central England which became Great Malvern. |
| Malvern Hills | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....England | |
| .....Malvern Hills | |
| RT | Worcestershire England |
| SN | In Hereford and Worcester County in W England. |
| Malvern Meteorite | |
|---|---|
| BT | meteorites |
| .stony meteorites | |
| ..achondrites | |
| ...howardite | |
| ....Malvern Meteorite | |
| RT | South Africa |
| SN | Ca-rich howardite. Free State, South Africa. Before 1985, also search Malvern AND meteorites. Added to Thesaurus in 1993. |
| Malvinas, Islas | |
|---|---|
| USE | Falkland Islands |
| Mama River | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Mama River | |
| BT | Asia |
| .Mama River | |
| RT | Vitim River |
| SN | Rises NE of Lake Baikal and flows NE into Vitim River at Mama. This term has multiple hierarchies. |
| Mama Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Irkutsk Russian Federation | |
| ...Mama Russian Federation | |
| SN | Town on the Vitim River at the mouth of the Mama River in NE Irkutsk Oblast. Before 1993, Mama Russian Republic was also used. This term has multiple hierarchies. |
| Mamainse Point | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Ontario | |
| ...Algoma District Ontario | |
| ....Mamainse Point | |
| SN | On Lake Superior N of Sault Sainte Marie. |
| Mammalia | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| NT | Docodonta |
| Monotremata | |
| Multituberculata | |
| Paucituberculata | |
| Theria | |
| Triconodonta | |
| RT | horns |
| fossil man | |
| Mammoth Cave | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Edmonson County Kentucky | |
| ...Mammoth Cave | |
| RT | national parks |
| SN | Cave and national park in Edmonson County in SW central Kentucky. |
| Mammoth Lakes earthquakes | |
|---|---|
| BT | earthquakes |
| .Mammoth Lakes earthquakes | |
| RT | California |
| Long Valley Caldera | |
| Mono County California | |
| SN | Series of earthquakes, with epicenters near town of Mammoth Lakes, California. Added to Thesaurus in 1985. |
| Mammoth Mountain | |
|---|---|
| BT | United States |
| .California | |
| ..Mammoth Mountain | |
| RT | volcanoes |
| Long Valley Caldera | |
| Mono County California | |
| Madera County California | |
| SN | Volcano. SW rim of Long Valley Caldera, near Mammoth Lakes and about 70 miles S of Mono Lake, SW California. Indexed with Madera County California and/or Mono County California as applicable. |
| Mammut | |
|---|---|
| USE | Mastodon |
| Mammuthus | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Proboscidea | |
| .......Elephantoidea | |
| ........Elephantidae | |
| .........Mammuthus | |
| NT | Mammuthus primigenius |
| SN | Genus. |
| Mammuthus primigenius | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Proboscidea | |
| .......Elephantoidea | |
| ........Elephantidae | |
| .........Mammuthus | |
| ..........Mammuthus primigenius | |
| SN | Species. |
| Mammutidae | |
|---|---|
| USE | Mastodontidae |
| man | |
|---|---|
| SN | As of 1981, no longer a valid term for GeoRef. See fossil man; Mammalia. Before 1978, included use in combination with fossil (i.e. man, fossil). |
| man-made islands | |
|---|---|
| USE | artificial islands |
| management | |
|---|---|
| SN | Not a valid term for GeoRef after 1994. See basin management, data management, information management, land management, planning, regulations, shorelines, soil management, waste management, or water management. |
| Managua Nicaragua | |
|---|---|
| BT | Central America |
| .Nicaragua | |
| ..Managua Nicaragua | |
| SN | Department and city in W Nicaragua. |
| Manakacha Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Middle Pennsylvanian | |
| ......Manakacha Formation | |
| RT | Arizona |
| Atokan | |
| Desmoinesian | |
| SN | NW Arizona. Added to Thesaurus in 1985. |
| Manatee County Florida | |
|---|---|
| BT | United States |
| .Florida | |
| ..Manatee County Florida | |
| SN | On Gulf of Mexico and Tampa Bay in SW Florida. |
| Manawatu River valley | |
|---|---|
| BT | Australasia |
| .New Zealand | |
| ..Manawatu River valley | |
| RT | North Island |
| SN | SW North Island. Also search Manawatu. Also index North Island. |
| Manche France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Manche France | |
| NT | Cotentin Peninsula |
| RT | Bay of Saint-Michel |
| Normandy | |
| SN | Department on the English Channel in NW France. |
| Manchester | |
|---|---|
| SN | No longer a valid term for GeoRef. As of 1993, see Manchester England. As of 1989, for the city in New Hampshire, use Manchester New Hampshire. Used in many other locations. |
| Manchester England | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....England | |
| .....Manchester England | |
| RT | Lancashire England |
| SN | City in Greater Manchester in NW England. |
| Manchester New Hampshire | |
|---|---|
| BT | llsborough County New Hampshire |
| .Manchester New Hampshire | |
| SN | City in S New Hampshire. |
| Manchukuo | |
|---|---|
| SN | Not a valid GeoRef index term after 1959. Formerly used for the region of Manchuria, NE China. Now see individual provinces: Heilongjiang China, Jilin China, Liaoning China. |
| Manchuria | |
|---|---|
| SN | As of 1993, no longer a valid term for GeoRef. See individual provinces: Heilongjiang China, Jilin China, Liaoning China. Before 1960, also search Manchukuo. |
| Mancos Shale | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Mancos Shale | |
| RT | New Mexico |
| Utah | |
| Wyoming | |
| Colorado | |
| Arizona | |
| Frontier Formation | |
| Ferron Sandstone Member | |
| Tununk Member | |
| SN | Lower and Upper Cretaceous. In Colorado, it is restricted to thick succession of shale, sandy shale, and thin-bedded sandstone overlying Niobrara Formation and underlying Mesaverde Group. NE Arizona, W Colorado, NW New Mexico, E Utah, and S and central Wy |
| Mandi India | |
|---|---|
| BT | machal Pradesh India |
| .Mandi India | |
| SN | City and district in N India. |
| Mandibulata | |
|---|---|
| BT | Invertebrata |
| .Arthropoda | |
| ..Mandibulata | |
| NT | Crustacea |
| Insecta | |
| Myriapoda | |
| Mangala Valles | |
|---|---|
| BT | Mars |
| .Mangala Valles | |
| UF | Mangala Vallis |
| SN | Valley on Mars. Added to Thesaurus in 1989. |
| Mangala Vallis | |
|---|---|
| USE | Mangala Valles |
| Mangalia Romania | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Romania | |
| ...Constanta Romania | |
| ....Mangalia Romania | |
| RT | Romanian Dobruja |
| SN | Town on the Black Sea in Constanta County. |
| Mangalore India | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Karnataka India | |
| ....Mangalore India | |
| SN | City in SW Karnataka, SW India. |
| manganblende | |
|---|---|
| USE | alabandite |
| manganese | |
|---|---|
| BT | metals |
| .manganese | |
| NT | Mn-53 |
| Mn-54 | |
| UF | Mn |
| RT | manganese minerals |
| lithophile elements | |
| manganese oxides | |
| heavy metals | |
| manganese ores | |
| manganese composition | |
| ferromanganese composition | |
| SN | Chemical element. Use manganese ores for manganese as a commodity. |
| manganese composition | |
|---|---|
| RT | chemical composition |
| composition | |
| ferromanganese composition | |
| manganese | |
| nodules | |
| SN | Added to Thesaurus in 1985. |
| Manganese Nodule Project | |
|---|---|
| USE | MANOP |
| manganese nodules | |
|---|---|
| USE | nodules |
| manganese ores | |
|---|---|
| BT | metal ores |
| .manganese ores | |
| RT | manganese minerals |
| braunite | |
| manganese | |
| rhodochrosite | |
| rhodonite | |
| MANOP | |
| SN | Commodity. See List C. |
| manganese oxides | |
|---|---|
| BT | oxides |
| .manganese oxides | |
| RT | rock varnish |
| asbolite | |
| buserite | |
| manganese | |
| oxyhydroxides | |
| psilomelane | |
| manganite | |
|---|---|
| BT | oxides |
| .manganite | |
| RT | manganese minerals |
| manganosite | |
|---|---|
| BT | oxides |
| .manganosite | |
| RT | manganese minerals |
| mangerite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..diorites | |
| ...mangerite | |
| Mangishlak Peninsula | |
|---|---|
| USE | Mangyshlak Peninsula |
| Mangla Dam | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..Pakistan | |
| ...Punjab Pakistan | |
| ....Mangla Dam | |
| SN | SE of Rawalpindi in N Pakistan. Also search Mangla. |
| mangrove swamps | |
|---|---|
| BT | shore features |
| .mangrove swamps | |
| BT | mires |
| .swamps | |
| ..mangrove swamps | |
| RT | ecology |
| geomorphology | |
| SN | This term has multiple hierarchies. |
| Mangyshlak Peninsula | |
|---|---|
| BT | Commonwealth of Independent States |
| .Kazakhstan | |
| ..Mangyshlak Peninsula | |
| UF | Mangishlak Peninsula |
| RT | Uzen Field |
| SN | On E coast of N Caspian Sea. Also search Mangyshlak. This term has multiple hierarchies. |
| Manhattan | |
|---|---|
| BT | United States |
| .New York | |
| ..New York City New York | |
| ...Manhattan | |
| SN | Island and borough of New York City at N end of New York Bay. Coextensive with New York County, SE New York. Search in combination with state. |
| Manhattan Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Manhattan Formation | |
| RT | New York |
| Connecticut | |
| New York City Group | |
| SN | Dominantly a garnetiferous quartz-biotite-plagioclase gneiss characterized by sillimanite and locally much muscovite. SE New York, and W Connecticut. |
| Manhattan Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..Riley County Kansas | |
| ...Manhattan Kansas | |
| SN | City in NE central Kansas. |
| Manicouagan Crater | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Manicouagan Crater | |
| RT | impact features |
| cryptoexplosion features | |
| Manicouagan Lake | |
| SN | Shock-metamorphic structure in E central Quebec. Before 1981, also search Manicouagan cryptoexplosion structure. Added to Thesaurus in 1981. |
| Manicouagan Lake | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Manicouagan Lake | |
| RT | Manicouagan Crater |
| SN | Lake and reservoir on the Manicouagan River. Added to Thesaurus in 1981. |
| Manicouagan River | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Manicouagan River | |
| SN | E central Quebec. Added to Thesaurus in 1981. |
| Manihiki Plateau | |
|---|---|
| BT | Pacific Ocean |
| .South Pacific | |
| ..Southeast Pacific | |
| ...Manihiki Plateau | |
| RT | DSDP Site 317 |
| SN | Undersea feature in the N Cook Islands area E of the Samoa Islands. This term has multiple hierarchies. |
| Manila Trench | |
|---|---|
| BT | Pacific Ocean |
| .North Pacific | |
| ..Northwest Pacific | |
| ...South China Sea | |
| ....Manila Trench | |
| SN | Just W of Luzon in the South China Sea. This term has multiple hierarchies. |
| Manildra Australia | |
|---|---|
| BT | Australasia |
| .Australia | |
| ..New South Wales Australia | |
| ...Manildra Australia | |
| SN | Village in E central New South Wales. |
| Manipur India | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Northeastern India | |
| ....Manipur India | |
| SN | State in Northeastern India. |
| Manistee County Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Lower Peninsula | |
| ...Manistee County Michigan | |
| SN | NW Michigan. |
| Manitou Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Lower Ordovician | |
| .....Manitou Formation | |
| RT | Colorado |
| SN | Consists of finely to coarsely crystalline limestone and minor amounts of dolomite. E Colorado. |
| Manitoulin District Ontario | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Ontario | |
| ...Manitoulin District Ontario | |
| NT | Manitoulin Island |
| Manitoulin Island | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Ontario | |
| ...Manitoulin District Ontario | |
| ....Manitoulin Island | |
| UF | Grand Manitoulin |
| RT | Niagara Escarpment |
| Lake Huron | |
| SN | Largest lake island in world. In northern Lake Huron at NW end of Georgian Bay. Also search Manitoulin. |
| Manitouwadge Ontario | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Ontario | |
| ...Thunder Bay District Ontario | |
| ....Manitouwadge Ontario | |
| SN | Town N of Lake Superior in central Ontario. |
| Manitowoc County Wisconsin | |
|---|---|
| BT | United States |
| .Wisconsin | |
| ..Manitowoc County Wisconsin | |
| Manlius Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Devonian | |
| ....Lower Devonian | |
| .....Manlius Formation | |
| RT | New York |
| Helderberg Group | |
| SN | Manlius Limestone, Helderberg Group. |
| Manning Canyon Shale | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Manning Canyon Shale | |
| RT | Utah |
| Upper Mississippian | |
| Lower Pennsylvanian | |
| SN | Upper Mississippian and Lower Pennsylvanian. N Utah. Indexed with ages as applicable. Added to Thesaurus in 1985. |
| Manning Clay Member | |
|---|---|
| USE | Manning Formation |
| Manning Formation | |
|---|---|
| UF | Manning Clay Member |
| RT | Eocene |
| Texas | |
| Gulf Coastal Plain | |
| Jackson Group | |
| SN | In Jackson Group, Gulf Coast basin of east-central Texas. Not to be confused with the Manning Group of Australia. Indexed with age as applicable. |
| Manning Park | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..British Columbia | |
| ...Manning Park | |
| SN | Provincial park in Cascade Mountains E of Vancouver. |
| Mannville Formation | |
|---|---|
| USE | Mannville Group |
| Mannville Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Lower Cretaceous | |
| .....Mannville Group | |
| UF | Mannville Formation |
| Manville Formation | |
| RT | Alberta |
| Saskatchewan | |
| Montana | |
| Clearwater Formation | |
| McMurray Formation | |
| SN | Includes Clearwater Formation. Added to Thesaurus in 1989. |
| MANOP | |
|---|---|
| UF | Manganese Nodule Project |
| RT | ocean floors |
| oceanography | |
| marine geology | |
| mineral exploration | |
| manganese ores | |
| nodules | |
| SN | Acronym. Added to Thesaurus in 1985. |
| manpower | |
|---|---|
| RT | economics |
| SN | Added to Thesaurus in 1981. |
| Mansalay Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Jurassic | |
| ....Mansalay Formation | |
| RT | Philippine Islands |
| Mindoro | |
| SN | Composed of hard calcareous mudstones, and calcareous and siliceous carbonaceous sandstone. S Mindoro Island. |
| Mansehra Pakistan | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..Pakistan | |
| ...Punjab Pakistan | |
| ....Mansehra Pakistan | |
| SN | Village in N Pakistan. |
| Mansfeld Syncline | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Saxony-Anhalt Germany | |
| ....Mansfeld Syncline | |
| SN | Also search Mansfeld. |
| Mansfield Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Mansfield Formation | |
| RT | Indiana |
| SN | Lower and Middle Pennsylvanian. Contains large amounts of shale, thin beds of coal under clay, and limestone, and is only locally predominantly sandstone. |
| Manson impact structure | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Manson impact structure | |
| RT | impact features |
| Calhoun County Iowa | |
| Pocahontas County Iowa | |
| SN | Calhoun and Pocahontas counties, N central Iowa. Indexed with counties as applicable. Added to Thesaurus in 1995. |
| mantle | |
|---|---|
| NT | upper mantle |
| RT | 410-km discontinuity |
| 670-km discontinuity | |
| asthenosphere | |
| continental drift | |
| convection | |
| convection currents | |
| core | |
| core-mantle boundary | |
| creep | |
| crust | |
| degassing | |
| delamination | |
| discontinuities | |
| Earth | |
| earthquakes | |
| elastic waves | |
| geosynclines | |
| geothermal gradient | |
| heat flo | |
| SN | Used for the zone of Earth below the crust and above the core (to a depth of 3480 km). |
| mantle plumes | |
|---|---|
| NT | superplumes |
| RT | diapirs |
| hot spots | |
| Icelandic Plume | |
| intraplate processes | |
| plate tectonics | |
| plumes | |
| superswells | |
| swells | |
| upwelling | |
| Yellowstone Hot Spot | |
| SN | Added to Thesaurus in 1995. |
| mantle-core boundary |
|---|
| mantos | |
|---|---|
| RT | mineral deposits, genesis |
| stratabound deposits | |
| SN | Added to Thesaurus in 1989. |
| manuals | |
|---|---|
| UF | handbooks |
| RT | guidebook |
| publications | |
| monographs | |
| textbooks | |
| Manville Formation | |
|---|---|
| USE | Mannville Group |
| Manzanillo earthquake 1995 | |
|---|---|
| USE | Jalisco earthquake 1995 |
| Manzano Mountains | |
|---|---|
| BT | United States |
| .New Mexico | |
| ..Manzano Mountains | |
| RT | Bernalillo County New Mexico |
| Basin and Range Province | |
| Valencia County New Mexico | |
| Torrance County New Mexico | |
| SN | Central New Mexico. Indexed with counties as applicable. Added to Thesaurus in 1985. |
| Maokou Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Permian | |
| ....Maokou Formation | |
| RT | China |
| SN | Added to Thesaurus in 1989. |
| map scales | |
|---|---|
| USE | cartographic scales |
| Mapimi Mexico | |
|---|---|
| BT | Mexico |
| .Durango Mexico | |
| ..Mapimi Mexico | |
| SN | Town in NE Durango, W central Mexico. |
| mapping | |
|---|---|
| RT | ARC/INFO |
| cartography | |
| global maps | |
| maps | |
| SN | As of 1993, use for the process of gathering data for the production of a specific map. Before 1993, also search maps or specific map type and the geographic area of interest. A valid term through 1977. Added to Thesaurus in 1993. |
| Maputo Mozambique | |
|---|---|
| BT | Africa |
| .East Africa | |
| ..Mozambique | |
| ...Maputo Mozambique | |
| SN | New name for city of Lourenco Marques located on Delagoa Bay in S Mozambique. Before 1977 also search Lourenco Marques. |
| Maquoketa Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Upper Ordovician | |
| .....Maquoketa Formation | |
| RT | Iowa |
| Missouri | |
| Illinois | |
| Wisconsin | |
| Minnesota | |
| SN | In Missouri, it is typically thin laminated shale interbedded with shaly limestone members. W Illinois, E Iowa, S Minnesota, E Missouri, and SW Wisconsin. |
| Maracaibo Basin | |
|---|---|
| BT | South America |
| .Venezuela | |
| ..Maracaibo Basin | |
| RT | Zulia Venezuela |
| Lake Maracaibo | |
| Trujillo Venezuela | |
| Merida Venezuela | |
| SN | NW part of country. Indexed with Lake Maracaibo and states as applicable. |
| Maracaibo Falcon Plain | |
|---|---|
| BT | South America |
| .Venezuela | |
| ..Maracaibo Falcon Plain | |
| SN | Added to Thesaurus in 1981. |
| Marajo | |
|---|---|
| BT | South America |
| .Brazil | |
| ..Para Brazil | |
| ...Marajo | |
| RT | Amazon River |
| SN | Largest island in Amazon Delta. |
| Marambio Island | |
|---|---|
| USE | Seymour Island |
| Maramures Romania | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Romania | |
| ...Transylvania | |
| ....Maramures Romania | |
| NT | Baia Mare Romania |
| Baita Romania | |
| Cavnic Romania | |
| Chiuzbaia | |
| Herja | |
| RT | Crisana-Maramures |
| SN | County in N Romania. |
| Maranhao Basin | |
|---|---|
| BT | South America |
| .Brazil | |
| ..Maranhao Basin | |
| RT | Goias Brazil |
| Tocantins River region | |
| Rio de Janeiro City Brazil | |
| SN | River basin in central Brazil. Indexed with Goias Brazil and/or Rio de Janeiro City Brazil as applicable. |
| Maranhao Brazil | |
|---|---|
| BT | South America |
| .Brazil | |
| ..Maranhao Brazil | |
| NT | Barreirinhas Basin |
| RT | Brazilian Shield |
| Tocantins River region | |
| Parnaiba Basin | |
| SN | State in NE Brazil. |
| Marathon Basin | |
|---|---|
| RT | Texas |
| SN | North of Big Bend National Park in W Texas. Indexed with counties or regions as applicable. |
| Marathon County Wisconsin | |
|---|---|
| BT | United States |
| .Wisconsin | |
| ..Marathon County Wisconsin | |
| SN | Central Wisconsin. |
| Marathon Geosyncline | |
|---|---|
| BT | United States |
| .Texas | |
| ..Marathon Geosyncline | |
| RT | Tesnus Formation |
| Trans-Pecos | |
| SN | W Texas. Added to Thesaurus in 1981. |
| Maravillas Formation | |
|---|---|
| RT | Puerto Rico |
| Texas | |
| Upper Cretaceous | |
| Upper Ordovician | |
| SN | Upper Ordovician of W Texas. Also, an Upper Cretaceous formation in Puerto Rico. Indexed with ages as applicable. Added to Thesaurus in 1989. |
| marble | |
|---|---|
| SN | As of 1981, no longer a valid term for GeoRef. Use marbles or marble deposits as applicable. |
| Marble Canyon | |
|---|---|
| RT | Arizona |
| Coconino County Arizona | |
| Culberson County Texas | |
| Grand Canyon | |
| national monuments | |
| Texas | |
| SN | Gorge along the Colorado River. Often considered the upper part of Grand Canyon. Established as National Monument in 1969. Abolished as a national monument and added to Grand Canyon national park in 1975. Also a canyon in Culberson County, Texas. Indexed |
| marble deposits | |
|---|---|
| RT | building stone |
| calcite deposits | |
| Carrara Marble | |
| construction materials | |
| crushed stone | |
| dimension stone | |
| dolostone deposits | |
| limestone deposits | |
| marbles | |
| ornamental materials | |
| Marble Falls Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Marble Falls Group | |
| RT | Texas |
| SN | Lower and middle Pennsylvanian. Comprises Sloan Formation below and Big Saline Formation above. Central Texas. |
| Marble Mountains | |
|---|---|
| RT | Klamath Mountains |
| Siskiyou County California | |
| SN | Klamath Mountains, N California. Indexed with Siskiyou County California and Klamath Mountains as applicable. Added to Thesaurus in 1989. |
| marbles | |
|---|---|
| BT | metamorphic rocks |
| .marbles | |
| NT | brucite marble |
| calciphyre | |
| ophicalcite | |
| UF | crystalline limestone |
| RT | dolomite |
| marble deposits | |
| ophite | |
| SN | As of 1981, use marble deposits for marble as a commodity. |
| Marburg an der Lahn Germany | |
|---|---|
| USE | Marburg Germany |
| Marburg Germany | |
|---|---|
| BT | sse Germany |
| .Marburg Germany | |
| UF | Marburg an der Lahn Germany |
| SN | City on Lahn River N of Frankfurt. |
| Marca Shale Member | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Marca Shale Member | |
| RT | California |
| Moreno Formation | |
| SN | Of Moreno Formation. Underlies Dos Palos Shale Member; overlies Tierra Loma Shale Member. S California. |
| marcasite | |
|---|---|
| BT | sulfides |
| .marcasite | |
| RT | iron minerals |
| Marcellus Shale | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Devonian | |
| ....Middle Devonian | |
| .....Marcellus Shale | |
| RT | Virginia |
| Ohio | |
| Pennsylvania | |
| New York | |
| Maryland | |
| West Virginia | |
| New Jersey | |
| Hamilton Group | |
| SN | In Hamilton Group. Added to Thesaurus in 1985. |
| Marche | |
|---|---|
| SN | As of 1981, no longer a valid term for GeoRef. Referred to the historical region in central France. Also referred to region in central Italy; now use Marches Italy for this. |
| Marches Italy | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Marches Italy | |
| NT | Ancona Italy |
| Ascoli Piceno Italy | |
| Pesaro Italy | |
| RT | San Marino |
| SN | Autonomous region in E central Italy. Before 1981, also search Marche and Italy. The Marches is also used to refer to this region. |
| Marcy Massif | |
|---|---|
| RT | Adirondack Mountains |
| Essex County New York | |
| New York | |
| SN | Mount Marcy. Highest peak in the Adirondack Mountains. Indexed with counties and Adirondack Mountains as applicable. |
| Mardin Formation | |
|---|---|
| RT | Cretaceous |
| K-T boundary | |
| Paleocene | |
| Turkey | |
| SN | Cretaceous to Paleocene. Composed of clayey schist and marly sandstone. In Mardin in SE Anatolia. Indexed with ages as applicable. |
| mare | |
|---|---|
| USE | maria |
| Mare Crisium | |
|---|---|
| USE | Sea of Crises |
| Mare Fecunditatis | |
|---|---|
| USE | Sea of Fertility |
| Mare Imbrium | |
|---|---|
| USE | Sea of Rains |
| Mare Nectaris | |
|---|---|
| USE | Sea of Nectar |
| Mare Orientale | |
|---|---|
| USE | Eastern Sea |
| mare ridges | |
|---|---|
| USE | wrinkle ridges |
| Mare Serenitatis | |
|---|---|
| USE | Sea of Serenity |
| Mare Spumans | |
|---|---|
| USE | Foaming Sea |
| Mare Tranquillitatis | |
|---|---|
| USE | Sea of Tranquillity |
| Mare Undarum | |
|---|---|
| USE | Sea of Waves |
| Marengo County Alabama | |
|---|---|
| BT | United States |
| .Alabama | |
| ..Marengo County Alabama | |
| Marfa Basin | |
|---|---|
| BT | United States |
| .Texas | |
| ..Marfa Basin | |
| RT | Permian Basin |
| Great Plains | |
| SN | SW Texas. Added to Thesaurus in 1985. |
| Margarita Island | |
|---|---|
| BT | South America |
| .Venezuela | |
| ..Nueva Esparta Venezuela | |
| ...Margarita Island | |
| BT | South America |
| .Venezuela | |
| ..Venezuelan Islands | |
| ...Margarita Island | |
| NT | Macanao Peninsula |
| SN | In the Caribbean Sea 15 miles off NE coast. This term has multiple hierarchies. |
| margarite | |
|---|---|
| BT | silicates |
| .sheet silicates | |
| ..mica group | |
| ...margarite | |
| margin, continental | |
|---|---|
| USE | continental margin |
| marginal basins | |
|---|---|
| BT | basins |
| .marginal basins | |
| RT | bottom features |
| ocean basins | |
| ocean floors | |
| plate tectonics | |
| continental slope | |
| subduction | |
| marginal seas | |
| marginal faults | |
|---|---|
| USE | boundary faults |
| marginal seas | |
|---|---|
| UF | seas, marginal |
| RT | plate tectonics |
| subduction | |
| marginal basins | |
| continents | |
| marginal trench | |
|---|---|
| USE | trenches |
| margins | |
|---|---|
| SN | No longer a valid term for GeoRef as of 1981. Use plate boundaries. |
| Marguerite Bay | |
|---|---|
| BT | Antarctica |
| .Marguerite Bay | |
| RT | Antarctic Peninsula |
| SN | Inlet on W coast of the Antarctic Peninsula between Adelaide and Alexander I Islands. |
| maria | |
|---|---|
| UF | mare |
| RT | Moon |
| highlands | |
| wrinkle ridges | |
| mascons | |
| SN | Plural of mare. |
| Mariana Basin | |
|---|---|
| SN | Not a valid term for GeoRef. May be used in several locations. See East Mariana Basin, Parece Vela Basin (West Mariana Basin), or for the central basin west of Mariana Trench, use Mariana Trough. |
| Mariana Islands | |
|---|---|
| BT | Oceania |
| .Micronesia | |
| ..Mariana Islands | |
| NT | Guam |
| Saipan | |
| UF | Marianas |
| Marianas Islands | |
| RT | Pacific Ocean |
| West Pacific Ocean Islands | |
| Izu-Bonin Arc | |
| Guam earthquake 1993 | |
| SN | Group of islands 1500 miles E of Philippine Islands. The islands, not including Guam, formerly were part of the U.S. Trust Territory of the Pacific Islands. The islands excluding Guam achieved commonwealth status within the U.S. as the Northern Mariana Is |
| Mariana Trench | |
|---|---|
| BT | Pacific Ocean |
| .North Pacific | |
| ..Northwest Pacific | |
| ...Mariana Trench | |
| RT | Leg 60 |
| DSDP Site 460 | |
| DSDP Site 461 | |
| DSDP Site 60 | |
| DSDP Site 61 | |
| Leg 124E | |
| SN | E of the Mariana Islands. This term has multiple hierarchies. Added to Thesaurus in 1981. |
| Mariana Trough | |
|---|---|
| BT | Pacific Ocean |
| .North Pacific | |
| ..Northwest Pacific | |
| ...Mariana Trough | |
| RT | Leg 60 |
| DSDP Site 453 | |
| DSDP Site 454 | |
| DSDP Site 455 | |
| DSDP Site 456 | |
| Leg 89 | |
| Leg 129 | |
| Leg 124E | |
| ODP Site 776 | |
| ODP Site 802 | |
| SN | Basin W of the Mariana Islands. Sometimes called the Mariana Basin. This term has multiple hierarchies. Added to Thesaurus in 1981. |
| Marianas | |
|---|---|
| USE | Mariana Islands |
| Marianas Islands | |
|---|---|
| USE | Mariana Islands |
| Marianna Limestone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Oligocene | |
| .....middle Oligocene | |
| ......Marianna Limestone | |
| RT | Mississippi |
| Alabama | |
| Florida | |
| Vicksburg Group | |
| SN | In Vicksburg Group. Consists of soft chalky limestone, locally called chimney rock; some local, hard limestone; tough to hard ledges in the chimney rock; sandy glauconitic limestone; marl; calcareous sand; and lignitic clay. S Alabama, W Florida, and S Mi |
| Mariano Lake | |
|---|---|
| BT | United States |
| .New Mexico | |
| ..McKinley County New Mexico | |
| ...Mariano Lake | |
| SN | NW New Mexico. Added to Thesaurus in 1985. |
| Maricopa County Arizona | |
|---|---|
| BT | United States |
| .Arizona | |
| ..Maricopa County Arizona | |
| NT | Phoenix Arizona |
| RT | Salt River valley |
| SN | SW central Arizona. |
| Marie Byrd Land | |
|---|---|
| BT | Antarctica |
| .Marie Byrd Land | |
| RT | Byrd Station |
| Fosdick Mountains | |
| SN | Large section E of Ross Ice Shelf and Ross Sea and extending E to Ellsworth Land. Claimed for U.S. by Richard E. Byrd in 1924. |
| Maries County Missouri | |
|---|---|
| BT | United States |
| .Missouri | |
| ..Maries County Missouri | |
| Mariinsk Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Mariinsk Russian Federation | |
| RT | Kemerovo Russian Federation |
| SN | City in Kemerovo Oblast on Trans-Siberian R.R. Also occurs in other locations. Before 1993, Mariinsk Russian Republic was also used. Indexed with oblast or region as applicable. |
| Marilia Brazil | |
|---|---|
| BT | South America |
| .Brazil | |
| ..Sao Paulo Brazil | |
| ...Marilia Brazil | |
| SN | City in W central Sao Palo, SE Brazil. |
| marin |
|---|
| Marin County California | |
|---|---|
| BT | United States |
| .California | |
| ..Marin County California | |
| NT | Bolinas Lagoon |
| Point Reyes | |
| Tomales Bay | |
| RT | San Francisco Bay region |
| San Pablo Bay | |
| SN | W California. |
| Marina District (San Francisco California) | |
|---|---|
| USE | San Francisco California |
| Marinduque Philippine Islands | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Philippine Islands | |
| ...Marinduque Philippine Islands | |
| SN | Island and province just S of Luzon. |
| marine | |
|---|---|
| SN | A valid index term through 1977. After 1977, use marine environment for type of environment or marine methods for geophysical method, or use marine platforms for type of platform. |
| marine drilling | |
|---|---|
| BT | drilling |
| .marine drilling | |
| RT | oceanography |
| engineering geology | |
| marine geology | |
| AMCOR | |
| offshore | |
| marine installations | |
| Continental Offshore Stratigraphic Test | |
| boreholes | |
| marine methods | |
| SN | Added to Thesaurus in 1985. |
| marine en |
|---|
| marine features | |
|---|---|
| SN | A valid term through 1975. Use shore features or ocean floors, or use the specific feature. |
| marine geology | |
|---|---|
| UF | geological oceanography |
| submarine geology | |
| RT | bottom features |
| continental rise | |
| environmental geology | |
| geophysical methods | |
| Alvin | |
| continental shelf | |
| continental slope | |
| marine drilling | |
| geology | |
| bathymetry | |
| benthonic taxa | |
| levees | |
| epicontinental seas | |
| CYANA | |
| Deep Sea Drilling Project | |
| Glomar Challenger | |
| MANOP | |
| marin | |
| SN | Used for the interdisciplinary study of the ocean floor and the ocean-continent border. Compare with oceanography, ocean floors, and ocean basins. |
| Marine Geology (category) | |
|---|---|
| SN | Oceanography (including marine geology), GeoRef category code 07, is one of thirty categories used to classify documents in GeoRef. Each reference in GeoRef is assigned one or more categories. Categories can be used, in addition to Terms, to refine search |
| marine geology maps | |
|---|---|
| BT | maps |
| .marine geology maps | |
| RT | oceanography |
| marine geology | |
| offshore | |
| SN | Added to Thesaurus in 1985. |
| marine gravimeters | |
|---|---|
| BT | gravimeters |
| .marine gravimeters | |
| SN | Added to Thesaurus in 1981. |
| marine methods | |
|---|---|
| RT | bottom-simulating reflectors |
| geophysical methods | |
| geophysical surveys | |
| GLORIA | |
| hydrophones | |
| marine drilling | |
| methods | |
| navigation | |
| research vessels | |
| Rivera Ocean Seismic Experiment | |
| Seabeam | |
| SeaMarc | |
| sonobuoys | |
| streamers | |
| SN | Before 1978, also search marine. |
| marine platforms | |
|---|---|
| BT | marine installations |
| .marine platforms | |
| RT | platforms |
| gravity platforms | |
| marine sedimentation | |
|---|---|
| BT | sedimentation |
| .marine sedimentation | |
| NT | glaciomarine sedimentation |
| RT | marine sediments |
| marine environment | |
| marine transport | |
| SN | Added to Thesaurus in 1981. |
| marine sediments | |
|---|---|
| BT | sediments |
| .marine sediments | |
| RT | AMCOR |
| beach placers | |
| fecal pellets | |
| contourite | |
| Heinrich events | |
| Orgon III | |
| marine sedimentation | |
| SN | Added to Thesaurus in 1981. |
| marine terraces | |
|---|---|
| BT | shore features |
| .marine terraces | |
| RT | geomorphology |
| shorelines | |
| littoral erosion | |
| beach ridges | |
| cheniers | |
| raised beaches | |
| benches | |
| terraces | |
| wave-cut platforms | |
| mud flats | |
| shoals | |
| SN | Before 1982, also search terraces AND (shore features OR marine). Added to Thesaurus in 1982. |
| marine transport | |
|---|---|
| RT | beach profiles |
| marine sedimentation | |
| sediment transport | |
| sedimentation | |
| solute transport | |
| tidal currents | |
| transport | |
| Mariner 10 | |
|---|---|
| BT | Mariner Program |
| .Mariner 10 | |
| RT | Mars |
| remote sensing | |
| Venus | |
| Mercury Planet | |
| Mariner 11 | |
|---|---|
| BT | Mariner Program |
| .Mariner 11 | |
| RT | Mars |
| remote sensing | |
| satellite methods | |
| SN | Added to Thesaurus in 1982. |
| Mariner 4 | |
|---|---|
| BT | Mariner Program |
| .Mariner 4 | |
| UF | Mariner IV |
| RT | Mars |
| remote sensing | |
| SN | Added to Thesaurus in 1989. |
| Mariner 5 | |
|---|---|
| BT | Mariner Program |
| .Mariner 5 | |
| UF | Mariner V observations |
| RT | remote sensing |
| Venus | |
| SN | Added to Thesaurus in 1989. |
| Mariner 6 | |
|---|---|
| BT | Mariner Program |
| .Mariner 6 | |
| RT | Mars |
| remote sensing | |
| Mariner 7 | |
|---|---|
| BT | Mariner Program |
| .Mariner 7 | |
| RT | Mars |
| remote sensing | |
| Mariner 9 | |
|---|---|
| BT | Mariner Program |
| .Mariner 9 | |
| RT | Mars |
| remote sensing | |
| Mariner IV | |
|---|---|
| USE | Mariner 4 |
| Mariner Program | |
|---|---|
| NT | Mariner 10 |
| Mariner 11 | |
| Mariner 4 | |
| Mariner 5 | |
| Mariner 6 | |
| Mariner 7 | |
| Mariner 9 | |
| RT | extraterrestrial geology |
| Mars | |
| Mercury Planet | |
| planetology | |
| remote sensing | |
| Venus | |
| SN | Added to Thesaurus in 1981. |
| Mariner V observations | |
|---|---|
| USE | Mariner 5 |
| Marinette County Wisconsin | |
|---|---|
| BT | United States |
| .Wisconsin | |
| ..Marinette County Wisconsin | |
| Marion County Alabama | |
|---|---|
| BT | United States |
| .Alabama | |
| ..Marion County Alabama | |
| SN | NW Alabama. |
| Marion County Arkansas | |
|---|---|
| BT | United States |
| .Arkansas | |
| ..Marion County Arkansas | |
| SN | N Arkansas. |
| Marion County Florida | |
|---|---|
| BT | United States |
| .Florida | |
| ..Marion County Florida | |
| SN | N central Florida. |
| Marion County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Marion County Georgia | |
| SN | W Georgia. |
| Marion County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Marion County Illinois | |
| SN | S central Illinois. |
| Marion County Indiana | |
|---|---|
| BT | Indiana |
| .Marion County Indiana | |
| SN | Central Indiana. |
| Marion County Iowa | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Marion County Iowa | |
| SN | S central Iowa. |
| Marion County Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..Marion County Kansas | |
| SN | E central Kansas. |
| Marion County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Marion County Kentucky | |
| SN | Central Kentucky. |
| Marion County Mississippi | |
|---|---|
| BT | United States |
| .Mississippi | |
| ..Marion County Mississippi | |
| SN | S Mississippi. |
| Marion County Missouri | |
|---|---|
| BT | United States |
| .Missouri | |
| ..Marion County Missouri | |
| SN | NE Missouri. |
| Marion County Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Marion County Ohio | |
| SN | Central Ohio. |
| Marion County Oregon | |
|---|---|
| BT | United States |
| .Oregon | |
| ..Marion County Oregon | |
| RT | Mount Jefferson |
| SN | NW Oregon. |
| Marion County South Carolina | |
|---|---|
| BT | United States |
| .South Carolina | |
| ..Marion County South Carolina | |
| SN | E South Carolina. |
| Marion County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Marion County Tennessee | |
| SN | SE Tennessee. |
| Marion County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Marion County Texas | |
| SN | E Texas. |
| Marion County West Virginia | |
|---|---|
| BT | United States |
| .West Virginia | |
| ..Marion County West Virginia | |
| SN | N West Virginia. |
| Marion Island | |
|---|---|
| BT | Indian Ocean Islands |
| .Marion Island | |
| RT | Pacific Ocean |
| SN | Subantarctic island 1200 miles SE of Capetown and just SW of Prince Edward Island Group. Annexed by South Africa. |
| Mariposa County California | |
|---|---|
| BT | United States |
| .California | |
| ..Mariposa County California | |
| RT | Yosemite National Park |
| SN | Central California. |
| Maritime Alps | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..Maritime Alps | |
| BT | Europe |
| .Alps | |
| ..Western Alps | |
| ...Maritime Alps | |
| RT | Piemonte Italy |
| Provence Alps | |
| Alpes-Maritimes France | |
| Piedmont Alps | |
| Ligurian Alps | |
| SN | S division of Western Alps. This term has multiple hierarchies. Indexed with countries as applicable. |
| Maritime Kray | |
|---|---|
| USE | Primorye Russian Federation |
| Maritime Provinces | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Maritime Provinces | |
| NT | New Brunswick |
| Nova Scotia | |
| Prince Edward Island | |
| UF | Maritimes |
| RT | Humber Zone |
| SN | Often called the Maritimes. Includes New Brunswick, Nova Scotia, and Prince Edward Island. Indexed with provinces as applicable. |
| Maritimes | |
|---|---|
| USE | Maritime Provinces |
| Maritsa River | |
|---|---|
| BT | Europe |
| .Maritsa River | |
| UF | Evros River |
| Meric River | |
| RT | Turkey |
| Bulgaria | |
| Greek Thrace | |
| SN | Rises in Bulgaria and flows into Aegean Sea. Also search Maritsa. Indexed with countries as applicable. |
| Mariupol Ukraine | |
|---|---|
| USE | Zhdanov Ukraine |
| Marjum Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Cambrian | |
| ....Middle Cambrian | |
| .....Marjum Formation | |
| RT | Utah |
| SN | W Utah. Added to Thesaurus in 1989. |
| MARK hydrothermal field | |
|---|---|
| USE | Snakepit hydrothermal field |
| marker beds | |
|---|---|
| UF | beds, marker |
| RT | seismology |
| event stratigraphy | |
| key beds | |
| SN | Before 1978, term also included use for key beds (stratigraphy). As of 1978, term is restricted for use in seismology. |
| market stabilization | |
|---|---|
| RT | economics |
| markets | |
| SN | Usually out-of-scope for GeoRef. Added to Thesaurus in 1981. |
| markets | |
|---|---|
| RT | demand |
| economics | |
| market stabilization | |
| supply | |
| SN | Added to Thesaurus in 1982. |
| markings on rocks | |
|---|---|
| SN | Not a valid GeoRef index term after 1944. See sedimentary structures; textures; petrofabrics. |
| markings, current | |
|---|---|
| USE | current markings |
| Markov chain analysis | |
|---|---|
| BT | statistical analysis |
| .Markov chain analysis | |
| SN | Added to Thesaurus in 1981. |
| marl | |
|---|---|
| BT | sedimentary rocks |
| .clastic rocks | |
| ..marl | |
| UF | calcareous clay |
| marlstone | |
| RT | clay |
| terrigenous materials | |
| argillaceous texture | |
| carbonate rocks | |
| loess | |
| Marlboro County South Carolina | |
|---|---|
| BT | United States |
| .South Carolina | |
| ..Marlboro County South Carolina | |
| Marlborough New Zealand | |
|---|---|
| BT | Australasia |
| .New Zealand | |
| ..Marlborough New Zealand | |
| NT | Kaikoura |
| RT | South Island |
| SN | Provincial district, NE South Island, New Zealand. Also index South Island. |
| marlstone | |
|---|---|
| USE | marl |
| Marmaton Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Middle Pennsylvanian | |
| ......Desmoinesian | |
| .......Marmaton Group | |
| RT | Iowa |
| Missouri | |
| Oklahoma | |
| Kansas | |
| Labette Shale | |
| Wewoka Formation | |
| SN | Includes (ascending) Fort Scott, Labette, Pawnee, Bandera, Altamont, Nowata, and Lenapan formations. Also includes Wewoka Formation. SW Iowa, E Kansas, W Missouri, and NE Oklahoma. |
| Marmolada Glacier | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Marmolada Glacier | |
| RT | Trentino-Alto Adige Italy |
| Veneto Italy | |
| Dolomites | |
| SN | At Marmolada Peak, the highest in the Dolomites. Indexed with autonomous regions as applicable. |
| Marne France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Marne France | |
| SN | Department in NE France. |
| Marne Valley | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Marne Valley | |
| RT | Val-de-Marne France |
| SN | River valley in NE central France. Also search Marne River. |
| Maroon Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Maroon Formation | |
| RT | Permian |
| Pennsylvanian | |
| Colorado | |
| SN | W central Colorado. Indexed with ages as applicable. Added to Thesaurus in 1989. |
| Maroon Town Jamaica | |
|---|---|
| BT | Caribbean region |
| .West Indies | |
| ..Antilles | |
| ...Greater Antilles | |
| ....Jamaica | |
| .....Maroon Town Jamaica | |
| SN | Town in NW Jamaica. |
| Marquesas Islands | |
|---|---|
| BT | Oceania |
| .Polynesia | |
| ..French Polynesia | |
| ...Marquesas Islands | |
| SN | Group of ten islands in French Polynesia. Added to Thesaurus in 1981. |
| Marquette County Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Upper Peninsula | |
| ...Marquette County Michigan | |
| NT | Marquette Michigan |
| Marquette Range | |
| SN | N Michigan Upper Peninsula, NW Michigan. |
| Marquette County Wisconsin | |
|---|---|
| BT | United States |
| .Wisconsin | |
| ..Marquette County Wisconsin | |
| SN | S central Wisconsin. |
| Marquette Iron Range | |
|---|---|
| USE | Marquette Range |
| Marquette Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Upper Peninsula | |
| ...Marquette County Michigan | |
| ....Marquette Michigan | |
| SN | City on Lake Superior in NW Michigan Upper Peninsula, N Michigan. |
| Marquette Range | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Upper Peninsula | |
| ...Marquette County Michigan | |
| ....Marquette Range | |
| UF | Marquette Iron Range |
| SN | Iron range in Marquette County in Upper Peninsula. |
| Marquette Range Supergroup | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Paleoproterozoic | |
| ....Marquette Range Supergroup | |
| RT | Ontario |
| Wisconsin | |
| Minnesota | |
| Michigan | |
| SN | Added to Thesaurus in 1989. |
| Mars Observer Mission | |
|---|---|
| USE | Mars Observer Program |
| Mars Observer Program | |
|---|---|
| UF | Mars Observer Mission |
| Observer Program, Mars | |
| RT | planetology |
| Mars | |
| remote sensing | |
| extraterrestrial geology | |
| SN | Also search Mars Observer or Observer Program. Added to Thesaurus in 1995. |
| Mars Pathfinder Program | |
|---|---|
| UF | Pathfinder Program, Mars |
| RT | planetology |
| Mars | |
| remote sensing | |
| extraterrestrial geology | |
| Ares Vallis | |
| SN | Also search Mars Pathfinder. |
| Marseilles Basin | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Marseilles Basin | |
| SN | Structural basin in SE France. Added to Thesaurus in 1981. |
| Marseilles France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Bouches-du-Rhone France | |
| ....Marseilles France | |
| SN | City on NE shore of Gulf of Lion in SE France. |
| Marshall County Alabama | |
|---|---|
| BT | United States |
| .Alabama | |
| ..Marshall County Alabama | |
| SN | NE Alabama. |
| Marshall County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Marshall County Illinois | |
| SN | N central Illinois. |
| Marshall County Indiana | |
|---|---|
| BT | Indiana |
| .Marshall County Indiana | |
| SN | N Indiana. |
| Marshall County Iowa | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Marshall County Iowa | |
| SN | Central Iowa. |
| Marshall County Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..Marshall County Kansas | |
| RT | Big Blue River |
| SN | NE Kansas. |
| Marshall County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Marshall County Kentucky | |
| SN | SW Kentucky. |
| Marshall County Minnesota | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Marshall County Minnesota | |
| SN | NW Minnesota. |
| Marshall County Mississippi | |
|---|---|
| BT | United States |
| .Mississippi | |
| ..Marshall County Mississippi | |
| SN | N Mississippi. |
| Marshall County Oklahoma | |
|---|---|
| BT | United States |
| .Oklahoma | |
| ..Marshall County Oklahoma | |
| SN | S Oklahoma. |
| Marshall County South Dakota | |
|---|---|
| BT | United States |
| .South Dakota | |
| ..Marshall County South Dakota | |
| SN | NE South Dakota. |
| Marshall County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Marshall County Tennessee | |
| SN | Central Tennessee. |
| Marshall County West Virginia | |
|---|---|
| BT | United States |
| .West Virginia | |
| ..Marshall County West Virginia | |
| SN | N West Virginia. |
| Marshall Islands | |
|---|---|
| BT | Oceania |
| .Micronesia | |
| ..Marshall Islands | |
| NT | Enewetak Atoll |
| RT | Pacific Ocean |
| West Pacific Ocean Islands | |
| Leg 143 | |
| Wodejebato Seamount | |
| Leg 144 | |
| ODP Site 871 | |
| ODP Site 872 | |
| ODP Site 873 | |
| ODP Site 874 | |
| ODP Site 877 | |
| SN | Group of 34 atolls and coral islands, including Enewetak Atoll and Kwajalein, SW of Hawaii and E of Guam. Part of the U.S. Trust Territory of the Pacific Islands. |
| Marshall Lake | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Ontario | |
| ...Thunder Bay District Ontario | |
| ....Marshall Lake | |
| SN | N Ontario. Added to Thesaurus in 1985. |
| Marshalltown Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Marshalltown Formation | |
| RT | Delaware |
| New Jersey | |
| SN | In Matawan Group. Overlies Englishtown Formation; underlies Wenonah Sand. |
| marshes | |
|---|---|
| BT | mires |
| .marshes | |
| NT | salt marshes |
| tidal marshes | |
| RT | geomorphology |
| fluvial features | |
| shore features | |
| lacustrine features | |
| bogs | |
| swamps | |
| wetlands | |
| paludal environment | |
| SN | As of 1981, use paludal environment for type of environment. Indexed with lacustrine features or shore features as applicable. |
| Marsica | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Abruzzi Italy | |
| ....Marsica | |
| SN | Mountain range in E central Italy. |
| marsquakes | |
|---|---|
| RT | earthquakes |
| Mars | |
| SN | Added to Thesaurus in 1981. |
| Marsupialia | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Metatheria | |
| ......Marsupialia | |
| NT | Diprotodonta |
| Polyprotodontia | |
| SN | Order. |
| Martha's Vineyard | |
|---|---|
| BT | United States |
| .Massachusetts | |
| ..Martha's Vineyard | |
| SN | Island in Atlantic Ocean off SW coast of Cape Cod. In Dukes County. Indexed with Dukes County Massachusetts as applicable. |
| Martian meteorites | |
|---|---|
| BT | meteorites |
| .stony meteorites | |
| ..achondrites | |
| ...Martian meteorites | |
| NT | ALH 84001 |
| SNC Meteorites | |
| RT | Mars |
| SN | Also search SNC Meteorites if applicable. Also index Mars and, if applicable, SNC Meteorites. Added to Thesaurus in 1995. |
| Martin County Florida | |
|---|---|
| BT | United States |
| .Florida | |
| ..Martin County Florida | |
| SN | SE Florida. |
| Martin County Indiana | |
|---|---|
| BT | Indiana |
| .Martin County Indiana | |
| SN | SW Indiana. |
| Martin County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Martin County Kentucky | |
| SN | E Kentucky. |
| Martin County Minnesota | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Martin County Minnesota | |
| SN | S Minnesota. |
| Martin County North Carolina | |
|---|---|
| BT | United States |
| .North Carolina | |
| ..Martin County North Carolina | |
| SN | E North Carolina. |
| Martin County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Martin County Texas | |
| SN | W Texas. |
| Martin Formation | |
|---|---|
| RT | Aphebian |
| Argentina | |
| Arizona | |
| California | |
| Devonian | |
| Dinantian | |
| England | |
| Helikian | |
| Middle Devonian | |
| Pleistocene | |
| Saskatchewan | |
| Sonora Mexico | |
| Upper Devonian | |
| upper Pliocene | |
| SN | Use for the Devonian formation of central and E Arizona, California and Sonora Mexico. Also search Martin Limestone in Arizona. In Saskatchewan (Aphebian or Paleohelikian), it is sometimes referred to as the Martin Group as well. The Dinantian Martin Lime |
| Martin Lake | |
|---|---|
| RT | Alabama |
| Coosa County Alabama | |
| Elmore County Alabama | |
| Tallapoosa County Alabama | |
| SN | Formed by dam across Tallapoosa River in E central Alabama. Indexed with counties or regions as applicable. |
| Martin River Glacier | |
|---|---|
| BT | United States |
| .Alaska | |
| ..Southern Alaska | |
| ...Martin River Glacier | |
| RT | Chugach Mountains |
| SN | NE of Cordova in S Alaska. |
| Martinique | |
|---|---|
| BT | Caribbean region |
| .West Indies | |
| ..Antilles | |
| ...Lesser Antilles | |
| ....Martinique | |
| NT | Mount Pelee |
| RT | Windward Islands |
| SN | Island and department of France in Windward Islands. |
| Martinsburg Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Martinsburg Formation | |
| RT | Virginia |
| Pennsylvania | |
| Maryland | |
| West Virginia | |
| New Jersey | |
| SN | Middle and Upper Ordovician. In Pennsylvania, comprises (ascending) Cocalio Shale, unnamed and undifferentiated dark shales, Jonestown Beds (new), and Fairview Shochary Sandstones. Maryland, New Jersey, SE Pennsylvania, Tennessee, W Virginia, and West Vir |
| martite | |
|---|---|
| BT | oxides |
| .martite | |
| RT | iron ores |
| iron oxides | |
| hematite | |
| Mary Lee Coal | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Mary Lee Coal | |
| RT | Alabama |
| Black Warrior Basin | |
| Pottsville Group | |
| SN | Pennsylvanian. Black Warrior Basin, Alabama. In Pottsville Group. Added to Thesaurus in 1993. |
| Maryborough Basin | |
|---|---|
| RT | Coral Sea |
| Queensland Australia | |
| Southwest Pacific | |
| SN | SE Queensland. Also search Maryborough. Indexed with Queensland Australia and/or Coral Sea as applicable. |
| Marysvale Utah | |
|---|---|
| BT | United States |
| .Utah | |
| ..Piute County Utah | |
| ...Marysvale Utah | |
| SN | City in SE Utah. |
| Masaya | |
|---|---|
| BT | Central America |
| .Nicaragua | |
| ..Masaya | |
| UF | Masaya Volcano |
| RT | volcanoes |
| SN | Volcano. S Nicaragua. Added to Thesaurus in 1989. |
| Masaya Volcano | |
|---|---|
| USE | Masaya |
| Mascarene Basin | |
|---|---|
| BT | Indian Ocean |
| .Mascarene Basin | |
| RT | DSDP Site 239 |
| SN | E of N Madagascar. |
| Mascarene Islands | |
|---|---|
| BT | Indian Ocean Islands |
| .Mascarene Islands | |
| NT | Reunion |
| Rodriguez Island | |
| RT | Mauritius |
| SN | Group between 400 and 500 miles E of Madagascar. Indexed with islands as applicable. |
| mascons | |
|---|---|
| RT | maria |
| Moon | |
| Mascot Dolomite | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Lower Ordovician | |
| .....Mascot Dolomite | |
| RT | Virginia |
| Tennessee | |
| Knox Group | |
| SN | In Knox Group. Consists of light- and dark-gray dolomite and limestone; moderately cherty; base marked by chert matrix sandstone. E Tennessee and Virginia. |
| maskelynite | |
|---|---|
| BT | silicates |
| .aluminosilicates | |
| ..maskelynite | |
| RT | meteorites |
| plagioclase | |
| glasses | |
| SN | Meteorite mineral. |
| Maskinonge County Quebec | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Maskinonge County Quebec | |
| Mason County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Mason County Illinois | |
| SN | Central Illinois. |
| Mason County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Mason County Kentucky | |
| SN | NE Kentucky. |
| Mason County Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Lower Peninsula | |
| ...Mason County Michigan | |
| SN | W Michigan. |
| Mason County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Mason County Texas | |
| SN | Central Texas. |
| Mason County Washington | |
|---|---|
| BT | United States |
| .Washington | |
| ..Mason County Washington | |
| RT | Olympic Mountains |
| SN | W Washington. |
| Mason County West Virginia | |
|---|---|
| BT | United States |
| .West Virginia | |
| ..Mason County West Virginia | |
| SN | W West Virginia. |
| mass | |
|---|---|
| RT | Earth |
| mass balance | |
| mass spectra | |
| mass spectroscopy | |
| specific surface | |
| mass balance | |
|---|---|
| UF | balance, mass |
| mass budget | |
| RT | ablation |
| glacial geology | |
| glaciers | |
| water balance | |
| mass | |
| mass budget | |
|---|---|
| USE | mass balance |
| mass extinctions | |
|---|---|
| RT | biochronology |
| biologic evolution | |
| catastrophes | |
| extinction | |
| paleontology | |
| SN | Added to Thesaurus in 1985. |
| mass spectra | |
|---|---|
| BT | spectra |
| .mass spectra | |
| RT | spectroscopy |
| mass spectroscopy | |
| fragmentograms | |
| mass | |
| SN | Used for data. For methodology, use mass spectroscopy. Added to Thesaurus in 1981. |
| mass spectrometry | |
|---|---|
| USE | mass spectroscopy |
| mass spectroscopy | |
|---|---|
| BT | spectroscopy |
| .mass spectroscopy | |
| NT | accelerator mass spectroscopy |
| thermal ionization mass spectroscopy | |
| UF | mass spectrometry |
| RT | chemical analysis |
| inductively coupled plasma methods | |
| mass spectra | |
| liquid scintillation methods | |
| mass | |
| secondary ion mass spectroscopy | |
| SN | Before 1978, also search mass spectrometry; spectroscopy AND mass. |
| mass transfer | |
|---|---|
| UF | transfer, mass |
| RT | geochemistry |
| hydrochemistry | |
| SN | As of 1981, use only in the chemical sense. Before 1981, included use as a general term. |
| mass transport | |
|---|---|
| SN | Not a valid term for GeoRef. As of 1989, see mass movements; sedimentation; transport. |
| mass wastage | |
|---|---|
| USE | mass movements |
| mass wasting | |
|---|---|
| USE | mass movements |
| Massac County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Massac County Illinois | |
| Massachusetts Bay | |
|---|---|
| BT | United States |
| .Massachusetts | |
| ..Massachusetts Bay | |
| NT | Boston Harbor |
| RT | Barnstable County Massachusetts |
| Essex County Massachusetts | |
| Norfolk County Massachusetts | |
| Plymouth County Massachusetts | |
| Suffolk County Massachusetts | |
| SN | Extends from Cape Ann to Cape Cod, along the Massachusetts coast. Indexed with counties as applicable. |
| Massiac France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Cantal France | |
| ....Massiac France | |
| SN | Village in S central France. |
| Massif Central | |
|---|---|
| USE | Central Massif |
| massifs | |
|---|---|
| SN | As of 1981, no longer a valid term for GeoRef. Use complexes. |
| massive | |
|---|---|
| SN | A valid index term through 1977. After 1977, use massive bedding for the sedimentary structure, and use massive deposits for ore deposits. |
| massive bedding | |
|---|---|
| BT | sedimentary structures |
| .planar bedding structures | |
| ..massive bedding | |
| RT | bedding |
| SN | Before 1978, also search massive AND bedding. |
| massive deposits | |
|---|---|
| NT | massive sulfide deposits |
| RT | cyprus-type deposits |
| kuroko-type deposits | |
| mineral deposits, genesis | |
| SN | Before 1978, also search massive AND (ore deposits OR deposits). |
| massive hydraulic fracturing | |
|---|---|
| RT | hydraulic fracturing |
| SN | Added to Thesaurus in 1981. |
| massive sulfide deposits | |
|---|---|
| BT | massive deposits |
| .massive sulfide deposits | |
| RT | sulfides |
| mineral deposits, genesis | |
| besshi-type deposits | |
| cyprus-type deposits | |
| kuroko-type deposits | |
| SN | Also search massive deposits and sulfides. Before 1978, also search massive AND (ore deposits OR deposits) AND sulfides. Also index sulfides. Added to Thesaurus in 1995. |
| Mastodon | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Proboscidea | |
| .......Mastodontoidea | |
| ........Mastodontidae | |
| .........Mastodon | |
| UF | Mammut |
| SN | Genus. |
| Mastodontidae | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Proboscidea | |
| .......Mastodontoidea | |
| ........Mastodontidae | |
| NT | Mastodon |
| UF | Mammutidae |
| SN | Family. |
| Mastodontoidea | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Proboscidea | |
| .......Mastodontoidea | |
| NT | Mastodontidae |
| Matadi Congo Democratic Republic | |
|---|---|
| BT | Africa |
| .Central Africa | |
| ..Congo Democratic Republic | |
| ...Lower Zaire Congo Democratic Republic | |
| ....Matadi Congo Democratic Republic | |
| RT | Congo River |
| SN | Port city on Congo River in W Congo Democratic Republic. Before 1998, Matadi Zaire was also used. |
| Matagami | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Matagami | |
| UF | Lake Matagami |
| Mattagami | |
| SN | Lake in Abitibi Territory SE of James Bay. |
| Matagamon Sandstone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Devonian | |
| ....Lower Devonian | |
| .....Matagamon Sandstone | |
| RT | Maine |
| Matagorda Bay | |
|---|---|
| BT | United States |
| .Texas | |
| ..Matagorda Bay | |
| RT | Gulf of Mexico |
| Calhoun County Texas | |
| SN | Inlet of the Gulf of Mexico in SE Texas. Indexed with counties as applicable. |
| Matagorda County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Matagorda County Texas | |
| Matane County Quebec | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Matane County Quebec | |
| Matanuska Valley | |
|---|---|
| BT | United States |
| .Alaska | |
| ..Southern Alaska | |
| ...Matanuska Valley | |
| SN | River valley NE of Anchorage in S Alaska. Also search Matanuska River. |
| Matapedia County Quebec | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Matapedia County Quebec | |
| Matapedia Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Matapedia Group | |
| RT | Upper Ordovician |
| Quebec | |
| New Brunswick | |
| Lower Silurian | |
| Maine | |
| SN | E Maine, N New Brunswick and Quebec. Indexed with ages as applicable. Added to Thesaurus in 1989. |
| Matera Italy | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Basilicata Italy | |
| ....Matera Italy | |
| SN | City and province in S Italy. |
| materials (educational) | |
|---|---|
| USE | educational resources |
| math |
|---|
| mathematical geology | |
|---|---|
| RT | algorithms |
| analog simulation | |
| autocorrelation | |
| autoregression | |
| Bayesian analysis | |
| biometry | |
| chaos | |
| cluster analysis | |
| cokriging | |
| crosscorrelation | |
| data processing | |
| digital simulation | |
| equations | |
| extrapolation | |
| Fourier analysis | |
| fractals | |
| functions | |
| fuzzy logic | |
| Galerkin me | |
| SN | Used only for studies specifically discussing the intricacies of the mathematics itself, rather than equations applied to a particular subject. |
| mathematical methods | |
|---|---|
| RT | algorithms |
| Archie's law | |
| Bayesian analysis | |
| Born approximation | |
| chaos | |
| cladistics | |
| cokriging | |
| crosscorrelation | |
| data processing | |
| DRASTIC | |
| eigenvalues | |
| equations | |
| extrapolation | |
| Fourier analysis | |
| fractals | |
| functions | |
| fuzzy logic | |
| Galerkin method | |
| genetic algorithms | |
| geostat | |
| SN | Used as a general term. |
| mathematical transformations | |
|---|---|
| RT | Fourier analysis |
| Hilbert transformations | |
| mathematical geology | |
| mathematical methods | |
| Radon transforms | |
| seismology | |
| SN | Added to Thesaurus in 1981. |
| Mathews County Virginia | |
|---|---|
| BT | United States |
| .Virginia | |
| ..Mathews County Virginia | |
| matildite | |
|---|---|
| BT | sulfosalts |
| .sulfobismuthites | |
| ..matildite | |
| UF | plenargyrite |
| schapbachite | |
| schapbacite | |
| Matilija Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....Matilija Formation | |
| RT | California |
| Tejon Formation | |
| SN | May be in the Tejon Formation. Ventura Basin, SW California. Added to Thesaurus in 1995. |
| mation#Flagstaff Formation#Floridan Aquifer#Hanna Formation#Huber Formation#Linc |
|---|
| Mato Grosso Brazil | |
|---|---|
| BT | South America |
| .Brazil | |
| ..Mato Grosso Brazil | |
| UF | Matto Grosso Brazil |
| RT | Brazilian Shield |
| Botucatu Formation | |
| Irati Formation | |
| SN | State in SW central Brazil. |
| Matra Mountains | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Hungary | |
| ...Matra Mountains | |
| BT | Europe |
| .Carpathians | |
| ..Matra Mountains | |
| SN | S spur of the Carpathians. Also search Matra. This term has multiple hierarchies. |
| matrix | |
|---|---|
| UF | ground mass |
| groundmass | |
| RT | igneous rocks |
| sedimentary rocks | |
| textures | |
| phenocrysts | |
| megacrysts | |
| mesostasis | |
| SN | Before 1998, also search mesostasis which is used for igneous rocks if applicable. |
| Matsukawa Japan | |
|---|---|
| BT | nshu |
| .Nagano Japan | |
| ..Matsukawa Japan | |
| RT | geothermal fields |
| SN | Town in geothermal region, N central Honshu. |
| Matsushiro Japan | |
|---|---|
| BT | nshu |
| .Matsushiro Japan | |
| SN | Town and observatory in central Honshu. |
| Matsuyama Japan | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Japan | |
| ...Shikoku | |
| ....Ehime Japan | |
| .....Matsuyama Japan | |
| SN | City in Ehime, W Shikoku, S Japan. Near Inland Sea. |
| Mattagami | |
|---|---|
| USE | Matagami |
| Matto Grosso Brazil | |
|---|---|
| USE | Mato Grosso Brazil |
| Mattoon Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Mattoon Formation | |
| RT | Illinois |
| Aravalli System | |
| SN | McLeansboro Group. Predominantly shale and sandstone. |
| maturity | |
|---|---|
| RT | age |
| ontogeny | |
| thermal maturity | |
| SN | Used as a general term. |
| Matuyama Chron | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...upper Cenozoic | |
| ....Matuyama Chron | |
| UF | Matuyama Epoch |
| Matuyama Reversed | |
| RT | Neogene |
| Lower Pleistocene | |
| paleomagnetism | |
| upper Pliocene | |
| upper Tertiary | |
| Quaternary | |
| reversals | |
| Jaramillo Subchron | |
| Olduvai Subchron | |
| SN | Geochronologic division based on magnetostratigraphic reversed polarity unit. Extends from the upper Pliocene to the middle Pleistocene. Formerly designated the Matuyama Epoch. |
| Matuyama Epoch | |
|---|---|
| USE | Matuyama Chron |
| Matuyama Reversed | |
|---|---|
| USE | Matuyama Chron |
| Mauch Chunk Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Mississippian | |
| .....Upper Mississippian | |
| ......Mauch Chunk Formation | |
| RT | Pennsylvania |
| Maryland | |
| West Virginia | |
| SN | Pennsylvania, W Maryland and N West Virginia. Added to Thesaurus in 1985. |
| maucherite | |
|---|---|
| BT | arsenides |
| .maucherite | |
| Maud Rise | |
|---|---|
| BT | Antarctic Ocean |
| .Weddell Sea | |
| ..Maud Rise | |
| RT | Leg 113 |
| ODP Site 689 | |
| ODP Site 690 | |
| SN | E Weddell Sea. |
| Maui | |
|---|---|
| BT | United States |
| .Hawaii | |
| ..Maui County Hawaii | |
| ...Maui | |
| RT | Haleakala |
| Red Hill | |
| SN | Island in the Hawaiian Islands NW of the island of Hawaii. This term has multiple hierarchies. |
| Maui County Hawaii | |
|---|---|
| BT | United States |
| .Hawaii | |
| ..Maui County Hawaii | |
| NT | Haleakala |
| Maui | |
| RT | Mauna Loa |
| Molokai | |
| SN | Includes islands of Kahoolawe, Lanai, Maui and Molokai. This term has multiple hierarchies. |
| Maumee River valley | |
|---|---|
| BT | United States |
| .Maumee River valley | |
| RT | Indiana |
| Ohio | |
| SN | NE Indiana and NW Ohio. Also search Maumee River. Indexed with states and counties as applicable. |
| Mauna Kea | |
|---|---|
| BT | United States |
| .Hawaii | |
| ..Hawaii County Hawaii | |
| ...Hawaii Island | |
| ....Mauna Kea | |
| UF | Mauna Kea Volcano |
| RT | volcanoes |
| SN | Extinct volcano on N central island of Hawaii. This term has multiple hierarchies. |
| Mauna Kea Volcano | |
|---|---|
| USE | Mauna Kea |
| Mauna Loa | |
|---|---|
| BT | United States |
| .Hawaii | |
| ..Mauna Loa | |
| UF | Mauna Loa Volcano |
| RT | Hawaii Island |
| Kilauea | |
| volcanoes | |
| Hawaii County Hawaii | |
| Maui County Hawaii | |
| Molokai | |
| SN | Volcano on S central island of Hawaii (Hawaii County) at about 19#DG25'N 155#DG30'W. May also be used for mountain on Molokai (Maui County). This term has multiple hierarchies. Also index county and island as applicable. |
| Mauna Loa Volcano | |
|---|---|
| USE | Mauna Loa |
| Maunder minimum | |
|---|---|
| RT | climate |
| Holocene | |
| Neoglacial | |
| solar activity | |
| SN | Solar activity in the late 17th to early 18th centuries. Added to Thesaurus in 1995. |
| Maures Massif | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Var France | |
| ....Maures Massif | |
| UF | Monts des Maures |
| SN | On the Mediterranean coast at W end of the Riviera in Var. Also search Maures. |
| Maurice Ewing Bank | |
|---|---|
| BT | Atlantic Ocean |
| .South Atlantic | |
| ..Maurice Ewing Bank | |
| RT | Ewing Bank |
| SN | S Atlantic Ocean, N of South Georgia. Added to Thesaurus in 1985. |
| Mauritanide Orogen | |
|---|---|
| USE | Mauritanides |
| Mauritanides | |
|---|---|
| BT | Africa |
| .West Africa | |
| ..Mauritanides | |
| UF | Mauritanide Orogen |
| RT | Mauritania |
| Mali | |
| Pan-African Orogeny | |
| Senegal | |
| SN | Orogen in West Africa which has undergone polyphase evolution. Indexed with countries as applicable. Added to Thesaurus in 1993. |
| Mauritius | |
|---|---|
| BT | Indian Ocean Islands |
| .Mauritius | |
| RT | Mascarene Islands |
| SN | An independent state in the Mascarene Islands about 450 miles E of Madagascar. |
| Maury Channel | |
|---|---|
| BT | Atlantic Ocean |
| .North Atlantic | |
| ..Maury Channel | |
| SN | Sea channel E of central Reykjanes Ridge and S of Iceland. |
| Maury County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Maury County Tennessee | |
| NT | Columbia Tennessee |
| SN | Central Tennessee. |
| Maverick Basin | |
|---|---|
| RT | Mexico |
| North America | |
| Texas | |
| SN | Structural basin in SW Texas and NE Mexico. Indexed with North America or states as applicable. Added to Thesaurus in 1981. |
| Maverick County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Maverick County Texas | |
| SN | SW Texas. |
| mawsonite | |
|---|---|
| BT | sulfides |
| .mawsonite | |
| Maxey Flats | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Fleming County Kentucky | |
| ...Maxey Flats | |
| RT | waste disposal sites |
| SN | Radioactive waste disposal site in NE Kentucky. Added to Thesaurus in 1985. |
| maximum entropy analysis | |
|---|---|
| RT | seismology |
| SN | Added to Thesaurus in 1981. |
| maximum likelihood | |
|---|---|
| BT | statistical analysis |
| .maximum likelihood | |
| UF | maximum likelihood analysis |
| RT | errors |
| reliability | |
| mathematical geology | |
| prediction | |
| probability | |
| maximum likelihood analysis | |
|---|---|
| USE | maximum likelihood |
| Maxwell Montes | |
|---|---|
| BT | Venus |
| .Maxwell Montes | |
| RT | Ishtar Terra |
| Venera Program | |
| SN | Volcanic feature on Venus. Added to Thesaurus in 1989. |
| May-sur-Orne France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Calvados France | |
| ....May-sur-Orne France | |
| SN | Village on the Orne River in NW France. |
| Maya Mountains | |
|---|---|
| BT | Central America |
| .Belize | |
| ..Maya Mountains | |
| SN | Range in S Belize. Also search Maya AND appropriate area term. |
| Maya River basin | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Maya River basin | |
| BT | Asia |
| .Maya River basin | |
| RT | Yakutia Russian Federation |
| Khabarovsk Russian Federation | |
| SN | Chiefly in central Khabarovsk Kray but also in Yakutia. Also search Maya River. This term has multiple hierarchies. |
| Mayaguez Bay | |
|---|---|
| BT | Caribbean region |
| .West Indies | |
| ..Antilles | |
| ...Greater Antilles | |
| ....Puerto Rico | |
| .....Mayaguez Bay | |
| SN | Off city of Mayaguez in W Puerto Rico. |
| Mayenne France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Mayenne France | |
| SN | Department in NW France. |
| Mayes County Oklahoma | |
|---|---|
| BT | United States |
| .Oklahoma | |
| ..Mayes County Oklahoma | |
| Maykop Russian Federation | |
|---|---|
| USE | Maikop Russian Federation |
| Maymecha Kotuy | |
|---|---|
| USE | Maymecha-Kotuy |
| Maymecha River | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Krasnoyarsk Russian Federation | |
| ...Maymecha River | |
| UF | Maimecha River |
| RT | Taymyr Dolgan-Nenets Russian Federation |
| Kheta River | |
| Maymecha-Kotuy | |
| SN | Rises in Evenki National Okrug and flows N into the Kheta River in the Taymyr National Okrug. Also search Maymecha or Maimecha. This term has multiple hierarchies. |
| Maymecha-Kotui | |
|---|---|
| USE | Maymecha-Kotuy |
| Maymecha-Kotuy | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Maymecha-Kotuy | |
| BT | Asia |
| .Maymecha-Kotuy | |
| UF | Maimecha-Kotui |
| Maymecha Kotuy | |
| Maymecha-Kotui | |
| RT | Kotuy River |
| Kheta River | |
| Maymecha River | |
| SN | Region and igneous province in the valleys of the Maymecha, Kotuy, and Kheta rivers in the Taymyr and Evenki national okrugs. This term has multiple hierarchies. |
| Maynardville Formation | |
|---|---|
| USE | Maynardville Limestone |
| Maynardville Limestone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Cambrian | |
| ....Upper Cambrian | |
| .....Maynardville Limestone | |
| UF | Maynardville Formation |
| RT | Virginia |
| Kentucky | |
| Ohio | |
| Alabama | |
| Georgia | |
| Tennessee | |
| Conasauga Group | |
| SN | Tennessee, Georgia, and other Southern Appalachians states. May be of the Conasauga Group or of the Nolichucky Shale. |
| Mayo Ireland | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..Ireland | |
| ...Mayo Ireland | |
| NT | Keel Ireland |
| SN | County in NW Ireland. |
| Mayon | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Philippine Islands | |
| ...Luzon | |
| ....Mayon | |
| RT | volcanoes |
| SN | Stratovolcano. Albay Province, SE Luzon. Added to Thesaurus in 1993. |
| Maysvillian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Upper Ordovician | |
| .....Cincinnatian | |
| ......Maysvillian | |
| SN | North America. Upper Ordovician, below Richmondian and above Edenian. Added to Thesaurus in 1985. |
| Mayurbhanj India | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Orissa India | |
| ....Mayurbhanj India | |
| SN | District in E India. |
| Mazagan Plateau | |
|---|---|
| BT | Atlantic Ocean |
| .North Atlantic | |
| ..Mazagan Plateau | |
| RT | DSDP Site 544 |
| Leg 79 | |
| DSDP Site 545 | |
| DSDP Site 546 | |
| DSDP Site 547 | |
| SN | Off the coast of Morocco in NE Atlantic. Added to Thesaurus in 1989. |
| Mazama Ash | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Quaternary | |
| ....Mazama Ash | |
| RT | Alberta |
| Saskatchewan | |
| Montana | |
| Washington | |
| Oregon | |
| Mount Mazama | |
| SN | Refers to any or all of several Quaternary volcanic ash beds, commonly used as geochronologic markers in Oregon, Washington, Montana, Alberta and Saskatchewan. Erupted from prehistoric Mount Mazama. |
| Mazatlan Mexico | |
|---|---|
| BT | Mexico |
| .Sinaloa Mexico | |
| ..Mazatlan Mexico | |
| SN | City on the Pacific Ocean. |
| Mazatzal Orogeny | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Paleoproterozoic | |
| ....Mazatzal Orogeny | |
| RT | New Mexico |
| orogeny | |
| Arizona | |
| Sonora Mexico | |
| SN | S New Mexico, SE Arizona and Sonora Mexico. |
| Mazon Creek | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Mazon Creek | |
| SN | NE Illinois. Fossil locality. Indexed with counties as applicable. |
| mberside England | |
|---|---|
| NT | Holderness |
| Humber Estuary | |
| mboldt County California | |
|---|---|
| NT | Cape Mendocino |
| Eureka California | |
| Fortuna California | |
| mboldt County Nevada | |
|---|---|
| NT | Getchell Mine |
| Osgood Mountains | |
| Santa Rosa Range | |
| Winnemucca Nevada | |
| McAllen Ranch Field | |
|---|---|
| BT | dalgo County Texas |
| .McAllen Ranch Field | |
| RT | oil and gas fields |
| SN | S Texas. Added to Thesaurus in 1985. |
| McArthur Basin | |
|---|---|
| RT | Arafura Sea |
| Australia | |
| Northern Territory Australia | |
| Queensland Australia | |
| SN | W Queensland, E Northern Territory and S Gulf of Carpentaria, Australia. Indexed with regions as applicable. Added to Thesaurus in 1985. |
| McClain County Oklahoma | |
|---|---|
| BT | United States |
| .Oklahoma | |
| ..McClain County Oklahoma | |
| McCloud Limestone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Permian | |
| ....McCloud Limestone | |
| RT | California |
| SN | N California. In some cases, age is given as Mississippian. Added to Thesaurus in 1989. |
| McCone County Montana | |
|---|---|
| BT | United States |
| .Montana | |
| ..McCone County Montana | |
| SN | NE Montana. |
| McCook County South Dakota | |
|---|---|
| BT | United States |
| .South Dakota | |
| ..McCook County South Dakota | |
| McCormick County South Carolina | |
|---|---|
| BT | United States |
| .South Carolina | |
| ..McCormick County South Carolina | |
| McCoy Creek Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Neoproterozoic | |
| ....McCoy Creek Group | |
| RT | Utah |
| Nevada | |
| SN | Great Basin of NE Nevada and N Utah. Added to Thesaurus in 1989. |
| McCracken County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..McCracken County Kentucky | |
| McCreary County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..McCreary County Kentucky | |
| SN | S Kentucky. |
| McCulloch County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..McCulloch County Texas | |
| McCurtain County Oklahoma | |
|---|---|
| BT | United States |
| .Oklahoma | |
| ..McCurtain County Oklahoma | |
| McDonald County Missouri | |
|---|---|
| BT | United States |
| .Missouri | |
| ..McDonald County Missouri | |
| McDonough County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..McDonough County Illinois | |
| SN | W Illinois. |
| McDowell County North Carolina | |
|---|---|
| BT | United States |
| .North Carolina | |
| ..McDowell County North Carolina | |
| SN | W central North Carolina. |
| McDowell County West Virginia | |
|---|---|
| BT | United States |
| .West Virginia | |
| ..McDowell County West Virginia | |
| SN | S West Virginia. |
| McDuffie County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..McDuffie County Georgia | |
| McHenry County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..McHenry County Illinois | |
| SN | NE Illinois. |
| McHenry County North Dakota | |
|---|---|
| BT | United States |
| .North Dakota | |
| ..McHenry County North Dakota | |
| SN | N central North Dakota. |
| McHugh Complex | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...McHugh Complex | |
| RT | Alaska |
| SN | S Alaska. Added to Thesaurus in 1989. |
| McIntosh County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..McIntosh County Georgia | |
| NT | Doboy Sound |
| Sapelo Island | |
| SN | SE Georgia. |
| McIntosh County North Dakota | |
|---|---|
| BT | United States |
| .North Dakota | |
| ..McIntosh County North Dakota | |
| SN | S North Dakota. |
| McIntosh County Oklahoma | |
|---|---|
| BT | United States |
| .Oklahoma | |
| ..McIntosh County Oklahoma | |
| SN | E Oklahoma. |
| McKean County Pennsylvania | |
|---|---|
| BT | United States |
| .Pennsylvania | |
| ..McKean County Pennsylvania | |
| McKenzie County North Dakota | |
|---|---|
| BT | United States |
| .North Dakota | |
| ..McKenzie County North Dakota | |
| SN | W North Dakota. |
| McKenzie Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Silurian | |
| ....Middle Silurian | |
| .....McKenzie Formation | |
| RT | Virginia |
| Pennsylvania | |
| Maryland | |
| West Virginia | |
| SN | In Maryland, it includes Rabble Run Sandstone Member. Underlies Bloomsburg Formation and overlies Rochester Formation. W Maryland, central Pennsylvania, N Virginia, and NE West Virginia. |
| McKinley County New Mexico | |
|---|---|
| BT | United States |
| .New Mexico | |
| ..McKinley County New Mexico | |
| NT | Ambrosia Lake |
| Ambrosia Lake mining district | |
| Fort Wingate | |
| Grants mining district | |
| Mariano Lake | |
| RT | Rio Puerco |
| Zuni Mountains | |
| SN | NW New Mexico. |
| McLean County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..McLean County Illinois | |
| SN | Central Illinois. |
| McLean County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..McLean County Kentucky | |
| SN | W Kentucky. |
| McLean County North Dakota | |
|---|---|
| BT | United States |
| .North Dakota | |
| ..McLean County North Dakota | |
| SN | Central North Dakota. |
| McLennan County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..McLennan County Texas | |
| NT | Waco Texas |
| SN | E central Texas. |
| McLeod County Minnesota | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..McLeod County Minnesota | |
| McMinn County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..McMinn County Tennessee | |
| McMullen County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..McMullen County Texas | |
| McMurdo Ice Shelf | |
|---|---|
| BT | Antarctica |
| .McMurdo Ice Shelf | |
| RT | Ross Ice Shelf |
| SN | Part of Ross Ice Shelf in McMurdo Sound area in Ross Dependency on the Pacific Ocean side. |
| McMurdo Sound | |
|---|---|
| BT | Antarctic Ocean |
| .McMurdo Sound | |
| RT | Taylor Valley |
| SN | Inlet of SW Ross Sea at the edge of the Ross Ice Shelf beween Ross Island and coast of Victoria Land. Site of major U.S. research and exploration base in Ross Dependency on the Pacific Ocean side. |
| McMurray Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Lower Cretaceous | |
| .....McMurray Formation | |
| RT | Alberta |
| Athabasca Oil Sands | |
| Mannville Group | |
| SN | In Mannville Group. E Alberta. Added to Thesaurus in 1985. |
| McNairy County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..McNairy County Tennessee | |
| McPherson County Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..McPherson County Kansas | |
| SN | Central Kansas. |
| McPherson County Nebraska | |
|---|---|
| BT | United States |
| .Nebraska | |
| ..McPherson County Nebraska | |
| SN | W central Nebraska. |
| McPherson County South Dakota | |
|---|---|
| BT | United States |
| .South Dakota | |
| ..McPherson County South Dakota | |
| NT | Eureka South Dakota |
| SN | N South Dakota. |
| McPherson Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Quarternary | |
| ....Pleistocene | |
| .....McPherson Formation | |
| RT | Kansas |
| SN | Consists of early Pleistocene stream deposits, later and coarser Pleistocene stream channel deposits, and still later Pleistocene silt, clay, and fine sand. Central Kansas. |
| Md | |
|---|---|
| USE | mendelevium |
| me |
|---|
| Meade Basin | |
|---|---|
| RT | Alaska |
| Kansas | |
| Meade County Kansas | |
| Northern Alaska | |
| SN | Located in Meade County, SW Kansas. Also a river basin S of Point Barrow in N Alaska, with coal mining in area. Indexed with states and counties as applicable. |
| Meade County Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..Meade County Kansas | |
| RT | Meade Basin |
| SN | SW Kansas. |
| Meade County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Meade County Kentucky | |
| SN | NW Kentucky. |
| Meade County South Dakota | |
|---|---|
| BT | United States |
| .South Dakota | |
| ..Meade County South Dakota | |
| RT | Black Hills |
| Whitewood Creek | |
| SN | W central South Dakota. |
| Meade Peak Member | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Permian | |
| ....Meade Peak Member | |
| RT | Idaho |
| Utah | |
| Wyoming | |
| Montana | |
| Phosphoria Formation | |
| SN | Of Phosphoria Formation. E Idaho, SW Montana, E Utah and W Wyoming. Added to Thesaurus in 1989. |
| Meadow soils | |
|---|---|
| BT | soils |
| .Meadow soils | |
| RT | soil group |
| Intrazonal soils | |
| Meager, Mount | |
|---|---|
| USE | Mount Meager |
| Meagher County Montana | |
|---|---|
| BT | United States |
| .Montana | |
| ..Meagher County Montana | |
| RT | Big Belt Mountains |
| Bridger Range | |
| Crazy Mountains Basin | |
| SN | Central Montana. |
| meandering | |
|---|---|
| USE | meanders |
| meanders | |
|---|---|
| BT | fluvial features |
| .meanders | |
| UF | meandering |
| RT | geomorphology |
| floodplains | |
| avulsion | |
| oxbow lakes | |
| rivers | |
| rivers and streams | |
| streams | |
| point bars | |
| sinuosity | |
| measurement | |
|---|---|
| UF | measurements |
| RT | accuracy |
| precision | |
| geodesy | |
| conductivity | |
| satellite methods | |
| dosimetry | |
| heat flow | |
| geothermal gradient | |
| thermal conductivity | |
| measurement-while-drilling | |
| telemetry | |
| measurement while drilling | |
|---|---|
| USE | measurement-while-drilling |
| measurement-while-drilling | |
|---|---|
| UF | measurement while drilling |
| RT | measurement |
| well-logging | |
| methods | |
| drilling | |
| boreholes | |
| downhole methods | |
| sounding | |
| techniques | |
| SN | Before 1993, also search MWD. Added to Thesaurus in 1993. |
| measurements | |
|---|---|
| USE | measurement |
| Meath Ireland | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..Ireland | |
| ...Meath Ireland | |
| SN | County on the Irish Sea in NE Ireland. |
| mechanical analysis | |
|---|---|
| SN | Not a valid GeoRef index term after 1970. See mechanism; mechanics. |
| mechanical controls | |
|---|---|
| RT | controls |
| mineral deposits, genesis | |
| SN | As of 1993, restricted to economic studies. |
| mechanical erosion | |
|---|---|
| USE | abrasion |
| mechanical weathering | |
|---|---|
| BT | weathering |
| .mechanical weathering | |
| RT | insolation |
| physical weathering | |
| SN | Before 1978, also search weathering AND mechanical. |
| mechanics | |
|---|---|
| RT | computer animation |
| decollement | |
| faults | |
| flexural-slip | |
| folds | |
| land subsidence | |
| plate tectonics | |
| rock mechanics | |
| shear | |
| soil mechanics | |
| static corrections | |
| stick-slip | |
| mechanism | |
|---|---|
| UF | mechanisms |
| RT | focal mechanism |
| flow mechanism | |
| mechanisms | |
|---|---|
| USE | mechanism |
| Mechelen Belgium | |
|---|---|
| USE | Malines Belgium |
| Mechlin Belgium | |
|---|---|
| USE | Malines Belgium |
| Mecklenburg | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Mecklenburg | |
| RT | Barth Germany |
| Mecklenburg-Western Pomerania Germany | |
| SN | Region on the Baltic Sea in Mecklenburg-Western Pomerania, NE Germany. A former German state. |
| Mecklenburg County North Carolina | |
|---|---|
| BT | United States |
| .North Carolina | |
| ..Mecklenburg County North Carolina | |
| NT | Charlotte North Carolina |
| Davidson North Carolina | |
| SN | S North Carolina. |
| Mecklenburg County Virginia | |
|---|---|
| BT | United States |
| .Virginia | |
| ..Mecklenburg County Virginia | |
| SN | S Virginia. |
| Mecklenburg-Vorpommern Germany | |
|---|---|
| USE | Mecklenburg-Western Pomerania Germany |
| Mecklenburg-Western Pomerania Germany | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Mecklenburg-Western Pomerania Germany | |
| NT | Barth Germany |
| Rugen Island | |
| Schwerin Germany | |
| UF | Mecklenburg-Vorpommern Germany |
| RT | Mecklenburg |
| North German Plain | |
| Oder Valley | |
| Pomerania | |
| SN | State in NE Germany. Before 1993, also search Mecklenburg. |
| Mecoptera | |
|---|---|
| BT | Invertebrata |
| .Arthropoda | |
| ..Mandibulata | |
| ...Insecta | |
| ....Pterygota | |
| .....Neoptera | |
| ......Endopterygota | |
| .......Mecoptera | |
| UF | Mecopteroida |
| SN | Order. |
| Mecopteroida | |
|---|---|
| USE | Mecoptera |
| Mecosta County Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Lower Peninsula | |
| ...Mecosta County Michigan | |
| Mecsek Mountains | |
|---|---|
| BT | ngary |
| .Mecsek Mountains | |
| UF | Baranya Mountains |
| SN | Near Croatian border in S Hungary. In Baranya. Also search Mecsek. |
| media | |
|---|---|
| USE | materials |
| median masses | |
|---|---|
| SN | As of 1981, no longer a valid term for GeoRef. See tectonics; orogenic belts. |
| Median Tectonic Line | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Japan | |
| ...Median Tectonic Line | |
| RT | tectonics |
| plate tectonics | |
| Honshu | |
| Kyushu | |
| Shikoku | |
| SN | Southwest Japan. |
| median valley | |
|---|---|
| UF | valley, median |
| RT | rift zones |
| rifting | |
| mid-ocean ridges | |
| Mid-Atlantic Ridge | |
| medical geology | |
|---|---|
| UF | health |
| RT | pollution |
| environmental geology | |
| geology | |
| carcinogens | |
| human ecology | |
| forensic geology | |
| medicinal waters | |
|---|---|
| RT | mineral waters |
| thermal waters | |
| water | |
| water quality | |
| water resources | |
| SN | Added to Thesaurus in 1981. |
| Medicine Bow Mountains | |
|---|---|
| BT | United States |
| .U. S. Rocky Mountains | |
| ..Medicine Bow Mountains | |
| RT | Wyoming |
| Colorado | |
| Front Range | |
| Mullen Creek-Nash Fork shear zone | |
| SN | Range of the Rocky Mountains. This term has multiple hierarchies. Indexed with states as applicable. |
| Medicine Hat Alberta | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..Alberta | |
| ...Medicine Hat Alberta | |
| SN | City in SE Alberta. |
| Medicine Lake | |
|---|---|
| UF | Medicine Lake Volcano |
| RT | Montana |
| California | |
| volcanoes | |
| South Dakota | |
| Siskiyou County California | |
| Medicine Lake Highland | |
| Sheridan County Montana | |
| SN | Lake and volcano in N California. Also a lake in Sheridan County, NE Montana and in Codington County, NE South Dakota. Indexed with states and counties as applicable. |
| Medicine Lake Highland | |
|---|---|
| BT | United States |
| .California | |
| ..Siskiyou County California | |
| ...Medicine Lake Highland | |
| RT | Medicine Lake |
| SN | Plateau surrounding Medicine Lake, N California. Added to Thesaurus in 1985. |
| Medicine Lake Volcano | |
|---|---|
| USE | Medicine Lake |
| Medina County Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Medina County Ohio | |
| SN | N Ohio. |
| Medina County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Medina County Texas | |
| RT | Edwards Aquifer |
| SN | SW Texas. |
| Medina Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Silurian | |
| ....Lower Silurian | |
| .....Medina Formation | |
| RT | Ontario |
| Pennsylvania | |
| New York | |
| Michigan | |
| Grimsby Sandstone | |
| Mediterranean (region) | |
|---|---|
| USE | Mediterranean region |
| Mediterranean region | |
|---|---|
| NT | Aegean Islands |
| Balearic Islands | |
| Calabrian Arc | |
| El Alboran Island | |
| Ionian Islands | |
| UF | Mediterranean (region) |
| RT | Italy |
| Algeria | |
| Turkey | |
| France | |
| Albania | |
| Croatia | |
| Slovenia | |
| Dalmatia | |
| Spain | |
| Cyprus | |
| Serbia | |
| Egypt | |
| Israel | |
| Morocco | |
| Tunisia | |
| Mediterranean Sea | |
| Bosnia-Herzegovina | |
| Greece | |
| Yugoslav Macedonia | |
| Lebanon | |
| Sardinia Italy | |
| Sicily Italy | |
| Corsica | |
| Libya | |
| Syria | |
| Elba | |
| Malta | |
| Mesogaea | |
| Yugos | |
| SN | The Mediterranean Sea and its islands, and parts of those countries along its shores in S Europe, N Africa, and the Middle East. Also search Mediterranean. Indexed with Mediterranean Sea, countries and islands as applicable. |
| Mediterranean Ridge | |
|---|---|
| BT | Mediterranean Sea |
| .Mediterranean Ridge | |
| RT | East Mediterranean |
| Leg 42A | |
| DSDP Site 377 | |
| Leg 160 | |
| ODP Site 969 | |
| ODP Site 970 | |
| ODP Site 971 | |
| ODP Site 972 | |
| ODP Site 973 | |
| SN | Extends S of Crete and N of the coasts of E Libya and W Egypt. |
| Mediterranean Sea | |
|---|---|
| NT | East Mediterranean |
| Gulf of Pozzuoli | |
| Hellenic Trench | |
| Mediterranean Ridge | |
| Pelagian Sea | |
| Strait of Sicily | |
| West Mediterranean | |
| RT | Balearic Islands |
| Corsica | |
| Crete | |
| Cyprus | |
| El Alboran Island | |
| Greek Aegean Islands | |
| Greek Ionian Islands | |
| Haifa Bay | |
| Hellenic Arc | |
| Leg 13 | |
| Leg 42A | |
| Malta | |
| Mediterranean region | |
| Sardinia Italy | |
| Sicily Italy | |
| Strait of Gibraltar | |
| SN | Enclosed by Europe on the W and N, Asia on the E, and Africa on the S. Before 1981, Balearic Islands and Malta were included as narrower terms. |
| Mediterranean soils | |
|---|---|
| BT | soils |
| .Mediterranean soils | |
| RT | soil group |
| Medo | |
|---|---|
| SN | Not a valid term for GeoRef. See Tokyo Japan. |
| Medoc | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Gironde France | |
| ....Medoc | |
| SN | District between the Gironde River and the Bay of Biscay in NW Gironde, SW France. |
| Meeker County Minnesota | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Meeker County Minnesota | |
| Meerfeld crater lake | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Rhineland-Palatinate Germany | |
| ....Meerfeld crater lake | |
| SN | W Germany. Added to Thesaurus in 1989. |
| Meers Fault | |
|---|---|
| BT | United States |
| .Oklahoma | |
| ..Meers Fault | |
| RT | Caddo County Oklahoma |
| Comanche County Oklahoma | |
| Kiowa County Oklahoma | |
| SN | SW Oklahoma. Indexed with counties as applicable. Added to Thesaurus in 1989. |
| meerschaum | |
|---|---|
| USE | sepiolite |
| Meerut India | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Uttar Pradesh India | |
| ....Meerut India | |
| SN | City, district, and division in N India. |
| meetings | |
|---|---|
| USE | symposia |
| megabreccia | |
|---|---|
| BT | sedimentary rocks |
| .clastic rocks | |
| ..megabreccia | |
| RT | breccia |
| microbreccia | |
| volcanic breccia | |
| gravity sliding | |
| tectonic breccia | |
| SN | Added to Thesaurus in 1995. |
| megacrysts | |
|---|---|
| RT | igneous rocks |
| matrix | |
| metamorphic rocks | |
| textures | |
| megacyclothems | |
|---|---|
| BT | sedimentary structures |
| .planar bedding structures | |
| ..cyclothems | |
| ...megacyclothems | |
| megafossils | |
|---|---|
| USE | fossils |
| Megalopolis Basin | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Greece | |
| ...Peloponnesus Greece | |
| ....Megalopolis Basin | |
| SN | In Arcadia Department in central Peloponnesus. Also search Megalopolis. |
| Megantic County Quebec | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Megantic County Quebec | |
| megaripples | |
|---|---|
| BT | sedimentary structures |
| .bedding plane irregularities | |
| ..megaripples | |
| RT | sand waves |
| sand ridges | |
| megaspores | |
|---|---|
| BT | palynomorphs |
| .megaspores | |
| RT | microfossils |
| biostratigraphy | |
| miospores | |
| spores | |
| Meghalaya India | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Northeastern India | |
| ....Meghalaya India | |
| NT | Garo Hills |
| Shillong India | |
| RT | Assam India |
| Shillong Plateau | |
| SN | State in NE India. Became a state in 1972. Formerly in Assam. |
| Megion Field | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Megion Field | |
| BT | Asia |
| .Megion Field | |
| RT | oil and gas fields |
| Siberian Lowland | |
| SN | Oil field in SE Khanty-Mansi National Okrug in Siberian Lowland. Also search Megion. This term has multiple hierarchies. |
| Megri Armenia | |
|---|---|
| BT | Europe |
| .Armenia | |
| ..Megri Armenia | |
| SN | Town in S Armenia near Iranian border. This term has multiple hierarchies. |
| Megrinskiy Pluton | |
|---|---|
| BT | Europe |
| .Armenia | |
| ..Megrinskiy Pluton | |
| SN | In Megrinskiy Mountains in S Armenia. This term has multiple hierarchies. |
| Meguma Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Meguma Group | |
| RT | Canada |
| Nova Scotia | |
| Goldenville Formation | |
| Halifax Formation | |
| SN | Composed of Goldenville and Halifax formations. In Nova Scotia. |
| Meguma Te |
|---|
| Meguma Terrane | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Meguma Terrane | |
| RT | Appalachians |
| New Brunswick | |
| Nova Scotia | |
| Newfoundland | |
| Northern Appalachians | |
| SN | N Appalachians, E Maritime Provinces, Canada. Added to Thesaurus in 1995. |
| Mehadia Romania | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Banat | |
| ...Mehadia Romania | |
| BT | Europe |
| .Southern Europe | |
| ..Romania | |
| ...Mehadia Romania | |
| SN | Village at W edge of the Transylvanian Alps. This term has multiple hierarchies. |
| Mehedinti Plateau | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Romania | |
| ...Mehedinti Plateau | |
| RT | Banat |
| Walachia | |
| SN | SW Romania. Indexed with regions as applicable. |
| Meighen Island | |
|---|---|
| BT | Canada |
| .Northwest Territories | |
| ..Franklin District Northwest Territories | |
| ...Queen Elizabeth Islands | |
| ....Meighen Island | |
| SN | Sverdrup Islands, W of Axel Heiberg Island in Franklin District. |
| Meigs County Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Meigs County Ohio | |
| Meigs County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Meigs County Tennessee | |
| meimechite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..ultramafics | |
| ...meimechite | |
| UF | meymechite |
| meionite | |
|---|---|
| BT | carbonates |
| .meionite | |
| BT | silicates |
| .framework silicates | |
| ..scapolite group | |
| ...meionite | |
| SN | This term has multiple hierarchies. |
| Mekong Delta | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Vietnam | |
| ...Mekong Delta | |
| SN | On the South China Sea S of Saigon. |
| Melanesia | |
|---|---|
| BT | Oceania |
| .Melanesia | |
| NT | Fiji |
| New Caledonia | |
| Solomon Islands | |
| Vanuatu | |
| RT | East Pacific Ocean Islands |
| Pacific Ocean | |
| West Pacific Ocean Islands | |
| Bismarck Archipelago | |
| SN | Collective name for islands NE of Australia. Indexed with island groups as applicable. |
| melange | |
|---|---|
| UF | block clay |
| RT | plate tectonics |
| structural analysis | |
| deformation | |
| boudinage | |
| tectonostratigraphic units | |
| melanite | |
|---|---|
| BT | silicates |
| .orthosilicates | |
| ..nesosilicates | |
| ...garnet group | |
| ....melanite | |
| melanocerite | |
|---|---|
| BT | silicates |
| .orthosilicates | |
| ..nesosilicates | |
| ...melanocerite | |
| melanophlogite | |
|---|---|
| BT | silicates |
| .framework silicates | |
| ..silica minerals | |
| ...melanophlogite | |
| melanterite | |
|---|---|
| BT | sulfates |
| .melanterite | |
| melaphyre | |
|---|---|
| BT | igneous rocks |
| .volcanic rocks | |
| ..basalts | |
| ...melaphyre | |
| RT | porphyry |
| Melbourne Australia | |
|---|---|
| BT | Australasia |
| .Australia | |
| ..Victoria Australia | |
| ...Melbourne Australia | |
| RT | Port Phillip Bay |
| SN | City on N Port Phillip Bay, SE Australia at mouth of Yarra River. Before 1993, also search Melbourne region AND Australia. |
| Melbourne region | |
|---|---|
| SN | No longer a valid term for GeoRef. See Melbourne Australia. |
| Melbourne, Mount | |
|---|---|
| USE | Mount Melbourne |
| Meldon Aplite | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....England | |
| .....Northumberland England | |
| ......Meldon Aplite | |
| SN | Northumberland in extreme NE England. |
| melilite | |
|---|---|
| BT | silicates |
| .orthosilicates | |
| ..sorosilicates | |
| ...melilite group | |
| ....melilite | |
| UF | mellilite |
| melilite group | |
|---|---|
| BT | silicates |
| .orthosilicates | |
| ..sorosilicates | |
| ...melilite group | |
| NT | akermanite |
| gehlenite | |
| melilite | |
| melilitite | |
|---|---|
| BT | igneous rocks |
| .volcanic rocks | |
| ..melilitite | |
| RT | alkali basalts |
| ultramafics | |
| Melilla | |
|---|---|
| BT | Africa |
| .North Africa | |
| ..Melilla | |
| RT | Spain |
| Morocco | |
| Ceuta | |
| SN | Spanish presidio on north coast of Morocco. Added to Thesaurus in 1981. |
| Mellette County South Dakota | |
|---|---|
| BT | United States |
| .South Dakota | |
| ..Mellette County South Dakota | |
| mellilite | |
|---|---|
| USE | melilite |
| melnikovite | |
|---|---|
| USE | greigite |
| Melones Fault | |
|---|---|
| BT | United States |
| .California | |
| ..Melones Fault | |
| RT | Sierra Nevada |
| SN | Major structural feature in the Sierra Nevada of California. Added to Thesaurus in 1981. |
| Melos | |
|---|---|
| SN | Use Milos for the Greek island. |
| Melosira | |
|---|---|
| BT | Plantae |
| .algae | |
| ..diatoms | |
| ...Melosira | |
| RT | microfossils |
| SN | Indexed with microfossils if applicable. |
| melt water | |
|---|---|
| USE | meltwater |
| melteigite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..gabbros | |
| ...alkali gabbros | |
| ....melteigite | |
| RT | ijolite |
| urtite | |
| melting | |
|---|---|
| RT | fusion |
| magma transport | |
| partial melting | |
| phase equilibria | |
| melting relations | |
|---|---|
| SN | A valid term through mid-1978. Use melting or phase equilibria. |
| melts | |
|---|---|
| NT | silicate melts |
| RT | liquid phase |
| magmas | |
| magmatic differentiation | |
| partial melting | |
| petrology | |
| phase equilibria | |
| vitrification | |
| meltwater | |
|---|---|
| UF | melt water |
| RT | glacial geology |
| glaciers | |
| rain | |
| water | |
| hydrology | |
| snow | |
| jokulhlaups | |
| ice | |
| Melville Island | |
|---|---|
| RT | Australia |
| Canada | |
| Franklin District Northwest Territories | |
| Northern Territory Australia | |
| Northwest Territories | |
| Queen Elizabeth Islands | |
| SN | One of the Queen Elizabeth Islands in W Franklin District, Northwest Territories. Also an island off the NW coast of Northern Territory, Australia. Indexed with regions as applicable. Added to Thesaurus in 1989. |
| Melville Peninsula | |
|---|---|
| RT | Antarctica |
| Franklin District Northwest Territories | |
| King George Island | |
| South Shetland Islands | |
| SN | N projection of Canadian mainland in Franklin District between Committee Bay on the W and Foxe Basin on the E. Also on King George Island, South Shetland Islands, Antarctica. Indexed with King George Island and South Shetland Islands; OR Franklin District |
| Memel River basin | |
|---|---|
| USE | Neman River basin |
| Memphis Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Shelby County Tennessee | |
| ...Memphis Tennessee | |
| SN | City in SW Tennessee. |
| menaccanite | |
|---|---|
| USE | ilmenite |
| Menard County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Menard County Illinois | |
| Menard County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Menard County Texas | |
| mendelevium | |
|---|---|
| BT | metals |
| .actinides | |
| ..mendelevium | |
| UF | Md |
| SN | Chemical element. |
| Mendeleyev Ridge | |
|---|---|
| BT | Arctic Ocean |
| .Mendeleyev Ridge | |
| RT | Alpha Cordillera |
| SN | N of Alaska and E of Siberia. |
| Mendeleyev Volcano | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Russian Pacific region | |
| ...Kuril Islands | |
| ....Kunashir Island | |
| .....Mendeleyev Volcano | |
| UF | Mendeleyeva Volcano |
| RT | volcanoes |
| SN | On Kunashir Island, southernmost of the Kuril Islands. This term has multiple hierarchies. |
| Mendeleyeva Volcano | |
|---|---|
| USE | Mendeleyev Volcano |
| Menderes Massif | |
|---|---|
| BT | Asia |
| .Middle East | |
| ..Turkey | |
| ...Menderes Massif | |
| RT | Anatolia |
| SN | SW Anatolia. |
| Mendip Hills | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....England | |
| .....Somerset England | |
| ......Mendip Hills | |
| SN | SW England. Also search Mendip. |
| Mendocino (Cape) | |
|---|---|
| USE | Cape Mendocino |
| Mendocino County California | |
|---|---|
| BT | United States |
| .California | |
| ..Mendocino County California | |
| NT | Point Arena California |
| RT | Eel River |
| Point Arena | |
| SN | On the Pacific Ocean in NW California. |
| Mendocino fracture zone | |
|---|---|
| BT | Pacific Ocean |
| .North Pacific | |
| ..Northeast Pacific | |
| ...Mendocino fracture zone | |
| UF | Mendocino triple junction |
| RT | triple junctions |
| SN | Running in an E-W direction approximately 1250 miles W of N California. This term has multiple hierarchies. |
| Mendocino triple junction | |
|---|---|
| USE | Mendocino fracture zone |
| Mendoza Argentina | |
|---|---|
| BT | South America |
| .Argentina | |
| ..Mendoza Argentina | |
| NT | Payun Matru |
| UF | Mendoza Province |
| RT | Salado Basin |
| SN | Province including city in W Argentina. |
| Mendoza Province | |
|---|---|
| USE | Mendoza Argentina |
| Menefee Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Menefee Formation | |
| RT | New Mexico |
| Colorado | |
| Mesaverde Group | |
| SN | In Mesaverde Group. Includes Cleary Coal Member and above that a bed formerly called Allison Barren Member. SW Colorado, and NW New Mexico. |
| meneghinite | |
|---|---|
| BT | sulfosalts |
| .sulfantimonites | |
| ..meneghinite | |
| Menifee County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Menifee County Kentucky | |
| Menominee County Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Upper Peninsula | |
| ...Menominee County Michigan | |
| Menominee County Wisconsin | |
|---|---|
| BT | United States |
| .Wisconsin | |
| ..Menominee County Wisconsin | |
| Menorca | |
|---|---|
| USE | Minorca |
| Menorca Rise | |
|---|---|
| USE | Minorca Rise |
| Mentor Beds | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Lower Cretaceous | |
| .....Mentor Beds | |
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Comanchean | |
| .....Mentor Beds | |
| RT | Kansas |
| SN | Mentor Sandstone Member (or Belvedere Formation), Lower Cretaceous. In central Kansas. This term has multiple hierarchies. |
| Menuha Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Menuha Formation | |
| RT | Middle East |
| Israel | |
| Jordan | |
| Syria | |
| SN | Added to Thesaurus in 1989. |
| Meotian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Miocene | |
| .....upper Miocene | |
| ......Meotian | |
| SN | European stage, Black Sea area. Above Sarmatian, below Cimmerian. |
| Meramecian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Mississippian | |
| .....Upper Mississippian | |
| ......Meramecian | |
| NT | Saint Louis Limestone |
| Sainte Genevieve Limestone | |
| Salem Limestone | |
| Spergen Formation | |
| Warsaw Formation | |
| RT | Chesterian |
| Boone Formation | |
| Valmeyeran | |
| SN | Provincial series, North America. Above Osagian, below Chesterian. |
| Merano Italy | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Trentino-Alto Adige Italy | |
| ....Bolzano Italy | |
| .....Merano Italy | |
| SN | City in Bolzano Province in NE Italy. |
| Merapi | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Indonesia | |
| ...Java | |
| ....Merapi | |
| UF | Merapi Volcano |
| RT | volcanoes |
| SN | Volcano in Java, Indonesia. Added to Thesaurus in 1989. |
| Merapi Volcano | |
|---|---|
| USE | Merapi |
| Mercalli scale, modified | |
|---|---|
| USE | modified Mercalli scale |
| Merced County California | |
|---|---|
| BT | United States |
| .California | |
| ..Merced County California | |
| RT | Kesterson Reservoir |
| SN | Central California. |
| Mercenaria | |
|---|---|
| BT | Invertebrata |
| .Mollusca | |
| ..Bivalvia | |
| ...Mercenaria | |
| SN | Genus. |
| Mercer County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Mercer County Illinois | |
| SN | NW Illinois. |
| Mercer County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Mercer County Kentucky | |
| SN | Central Kentucky. |
| Mercer County Missouri | |
|---|---|
| BT | United States |
| .Missouri | |
| ..Mercer County Missouri | |
| SN | N Missouri. |
| Mercer County New Jersey | |
|---|---|
| BT | United States |
| .New Jersey | |
| ..Mercer County New Jersey | |
| NT | Princeton New Jersey |
| Trenton New Jersey | |
| SN | W New Jersey. |
| Mercer County North Dakota | |
|---|---|
| BT | United States |
| .North Dakota | |
| ..Mercer County North Dakota | |
| SN | Central North Dakota. |
| Mercer County Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Mercer County Ohio | |
| SN | W Ohio. |
| Mercer County Pennsylvania | |
|---|---|
| BT | United States |
| .Pennsylvania | |
| ..Mercer County Pennsylvania | |
| SN | NW Pennsylvania. |
| Mercer County West Virginia | |
|---|---|
| BT | United States |
| .West Virginia | |
| ..Mercer County West Virginia | |
| SN | S West Virginia. |
| Mercia Mudstone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Triassic | |
| ....Upper Triassic | |
| .....Mercia Mudstone | |
| RT | England |
| Scotland | |
| SN | Added to Thesaurus in 1989. |
| mercury | |
|---|---|
| BT | metals |
| .mercury | |
| UF | Hg |
| quicksilver | |
| RT | native elements |
| mercury ores | |
| Mercury Planet | |
| cinnabar | |
| methylmercury | |
| SN | Chemical element. Use mercury ores for mercury as a commodity. Use Mercury Planet for the planet. |
| mercury injection | |
|---|---|
| UF | mercury injection method |
| RT | petroleum engineering |
| tertiary recovery | |
| injection | |
| enhanced recovery | |
| SN | Added to Thesaurus in 1985. |
| mercury injection method | |
|---|---|
| USE | mercury injection |
| mercury ores | |
|---|---|
| BT | metal ores |
| .mercury ores | |
| RT | native elements |
| Borkut Deposit | |
| Mercury Planet | |
| cinnabar | |
| mercury | |
| SN | Commodity. See List C. |
| Mercury Planet | |
|---|---|
| NT | Caloris Basin |
| RT | Mariner 10 |
| Mariner Program | |
| mercury | |
| mercury ores | |
| planetology | |
| planets | |
| solar system | |
| terrestrial planets | |
| SN | Before 1972, also search Mercury in combination with the category (extraterrestrial geology (See list A). |
| Merensky Reef | |
|---|---|
| BT | Africa |
| .Southern Africa | |
| ..South Africa | |
| ...Merensky Reef | |
| RT | Mpumalanga South Africa |
| Transvaal region | |
| Bushveld Complex | |
| Guateng South Africa | |
| Northern Province South Africa | |
| SN | Ore body, NE South Africa. Indexed with provinces. Added to Thesaurus in 1985. |
| Meric River | |
|---|---|
| USE | Maritsa River |
| Merida Mexico | |
|---|---|
| BT | Mexico |
| .Yucatan Mexico | |
| ..Merida Mexico | |
| SN | City in Yucatan. |
| Merida Venezuela | |
|---|---|
| BT | South America |
| .Venezuela | |
| ..Merida Venezuela | |
| RT | Maracaibo Basin |
| SN | State in W Venezuela. |
| Merionethshire Wales | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....Wales | |
| .....Merionethshire Wales | |
| NT | Arenig |
| Harlech Wales | |
| RT | Bala |
| Tremadoc Bay | |
| Cardigan Bay | |
| SN | Former county in W Wales. As of April 1974, part of Gwynedd. Before 1993, also search Merioneth. |
| Meriwether County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Meriwether County Georgia | |
| meromictic lakes | |
|---|---|
| BT | lakes |
| .meromictic lakes | |
| RT | geomorphology |
| lacustrine environment | |
| lacustrine features | |
| SN | Also index lacustrine features as applicable. Added to Thesaurus in 1989. |
| Merostomata | |
|---|---|
| BT | Invertebrata |
| .Arthropoda | |
| ..Chelicerata | |
| ...Merostomata | |
| NT | Eurypterida |
| Xiphosura | |
| Merrick County Nebraska | |
|---|---|
| BT | United States |
| .Nebraska | |
| ..Merrick County Nebraska | |
| merrillite | |
|---|---|
| USE | whitlockite |
| Merrimack County New Hampshire | |
|---|---|
| BT | w Hampshire |
| .Merrimack County New Hampshire | |
| Merrimack Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Merrimack Group | |
| RT | Ordovician |
| Silurian | |
| Massachusetts | |
| New Hampshire | |
| Maine | |
| Berwick Formation | |
| Kittery Formation | |
| SN | SW Maine, NE Massachusetts and SE New Hampshire. Includes Berwick Formation, Kittery Formation. Indexed with ages as applicable. Added to Thesaurus in 1989. |
| Merrimack River valley | |
|---|---|
| BT | United States |
| .Merrimack River valley | |
| RT | Massachusetts |
| New Hampshire | |
| Essex County Massachusetts | |
| Middlesex County Massachusetts | |
| Hillsborough County New Hampshire | |
| SN | Indexed with states and counties as applicable. |
| Merrimack Synclin |
|---|
| Merrimack Synclinorium | |
|---|---|
| BT | United States |
| .Merrimack Synclinorium | |
| RT | Massachusetts |
| New Hampshire | |
| Maine | |
| SN | Indexed with states as applicable. |
| Merseburg Germany | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Saxony-Anhalt Germany | |
| ....Merseburg Germany | |
| SN | City in E central Germany. |
| Mersey River | |
|---|---|
| RT | Cheshire England |
| England | |
| Mersey Valley | |
| Tasmania Australia | |
| SN | Name of rivers in N Tasmania and in NW England. Indexed with England or Tasmania Australia as applicable. |
| Mersey Valley | |
|---|---|
| RT | Australia |
| Cheshire England | |
| England | |
| Mersey River | |
| Tasmania Australia | |
| SN | River valley in NW England and in Tasmania. Indexed with regions as applicable. |
| merwinite | |
|---|---|
| BT | silicates |
| .orthosilicates | |
| ..nesosilicates | |
| ...merwinite | |
| merzlota | |
|---|---|
| USE | frozen ground |
| Mesa County Colorado | |
|---|---|
| BT | United States |
| .Colorado | |
| ..Mesa County Colorado | |
| NT | Grand Junction Colorado |
| RT | Book Cliffs |
| SN | W central Colorado. |
| Mesa Rica Sandstone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Lower Cretaceous | |
| .....Mesa Rica Sandstone | |
| RT | New Mexico |
| Texas | |
| Dakota Formation | |
| SN | Lower Cretaceous. May be in Purgatoire Formation or Dakota Formation. NE New Mexico and Texas. Added to Thesaurus in 1993. |
| Mesabi Range | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Mesabi Range | |
| RT | Biwabik Iron Formation |
| Saint Louis County Minnesota | |
| Itasca County Minnesota | |
| SN | Iron-ore bearing range of low hills in NE Minnesota. |
| mesas | |
|---|---|
| BT | erosion features |
| .mesas | |
| RT | geomorphology |
| mountains | |
| benches | |
| highlands | |
| plateaus | |
| uplands | |
| hills | |
| SN | Added to Thesaurus in 1993. |
| Mesaverde Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Mesaverde Group | |
| RT | New Mexico |
| Montana | |
| Colorado | |
| Almond Formation | |
| Arizona | |
| Blackhawk Formation | |
| Blair Formation | |
| Castlegate Sandstone | |
| Price River Formation | |
| Crevasse Canyon Formation | |
| ro | |
| Gallup Sandstone | |
| Hilliard Shale | |
| La Ventana Sandstone | |
| Menefee Formation | |
| Point Lookout Sandstone | |
| SN | Throughout San Juan Basin of SW Colorado and NW New Mexico, composed of Menefee Formation, Point Lookout Sandstone, Cliff House Sandstone, Gallup Sandstone, and Crevasse Canyon Formation. Arizona, W Colorado, S central Montana, W New Mexico, E Utah, and W |
| Meseta | |
|---|---|
| RT | Morocco |
| Spain | |
| SN | Geographic term for tableland. Used in several locations. One is the entire interior of Spain covering almost 3/4 of country and consisting of an immense plateau with Madrid at its center. Also search Iberian Meseta if applicable. For Morocco, also search |
| Mesoarchean | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Archean | |
| ...Mesoarchean | |
| Mesogaea | |
|---|---|
| RT | continental drift |
| Mediterranean region | |
| paleogeography | |
| Tethys | |
| Mesogastropoda | |
|---|---|
| BT | Invertebrata |
| .Mollusca | |
| ..Gastropoda | |
| ...Mesogastropoda | |
| NT | Cerithiidae |
| mesolite | |
|---|---|
| BT | silicates |
| .framework silicates | |
| ..zeolite group | |
| ...mesolite | |
| Mesolithic | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Quarternary | |
| ....Holocene | |
| .....Mesolithic | |
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Stone Age | |
| ....Mesolithic | |
| UF | Middle Stone Age |
| RT | archaeology |
| SN | Archaeological classification. This term has multiple hierarchies. |
| Mesopotamia | |
|---|---|
| BT | Asia |
| .Middle East | |
| ..Mesopotamia | |
| RT | Iraq |
| Syria | |
| SN | Region in SW Asia between Tigris River and Euphrates River. Primarily in Iraq but partly in NE Syria. Indexed with countries as applicable. |
| Mesoproterozoic | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Mesoproterozoic | |
| NT | Calymmian |
| Ectasian | |
| Stenian | |
| Aldridge Formation | |
| Altyn Limestone | |
| Apache Group | |
| Belt Supergroup | |
| Bonner Formation | |
| Fordham Gneiss | |
| Freda Sandstone | |
| Helena Formation | |
| Helikian | |
| Laxfordian | |
| Missoula Group | |
| Mount Shields Formation | |
| Newland Limestone | |
| Ravalli Group | |
| Revett Quartzite | |
| Saint Regis Formation | |
| Shepard Formation | |
| Snowslip Formation | |
| Spokane Formation | |
| Wallace Formation | |
| UF | middle Proterozoic |
| RT | Adelaidean |
| Empire Formation | |
| Penokean Orogeny | |
| SN | Era. Ages range from 1600 Ma to 1000 Ma. This term was ratified by IUGS in 1990. It is used here synonymously with middle Proterozoic which ranges from 1600 Ma to 900 Ma. |
| Mesosauria | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Reptilia | |
| ....Anapsida | |
| .....Mesosauria | |
| SN | Order. |
| mesosiderite | |
|---|---|
| BT | meteorites |
| .stony irons | |
| ..mesosiderite | |
| NT | Vaca Muerta Meteorite |
| RT | Dalgaranga |
| SN | Use grahamite for the bitumen. Added to Thesaurus in 1984. |
| mesostasis | |
|---|---|
| RT | igneous rocks |
| matrix | |
| meteorites | |
| textures | |
| SN | Before 1998, also search matrix AND igneous rocks. |
| mesothermal processes | |
|---|---|
| RT | mineral deposits, genesis |
| processes | |
| SN | Also search mesothermal. Added to Thesaurus in 1981. |
| mesozonal metamorphism | |
|---|---|
| BT | metamorphism |
| .mesozonal metamorphism | |
| RT | high-grade metamorphism |
| SN | Added to Thesaurus in 1982. |
| Messel Germany | |
|---|---|
| BT | sse Germany |
| .Messel Germany | |
| SN | Fossil locality and village near Darmstadt. |
| Messina Italy | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Sicily Italy | |
| ....Messina Italy | |
| SN | City and province in NE Sicily. |
| Messina Strait | |
|---|---|
| USE | Strait of Messina |
| Messinian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Miocene | |
| .....Messinian | |
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Miocene | |
| .....upper Miocene | |
| ......Messinian | |
| meta-andesite | |
|---|---|
| BT | metamorphic rocks |
| .metaigneous rocks | |
| ..meta-andesite | |
| UF | metaandesite |
| meta-anorthosite | |
|---|---|
| BT | metamorphic rocks |
| .metaigneous rocks | |
| ..meta-anorthosite | |
| UF | metaanorthosite |
| RT | anorthosite |
| SN | Added to Thesaurus in 1989. |
| meta-arkose | |
|---|---|
| BT | metamorphic rocks |
| .metasedimentary rocks | |
| ..meta-arkose | |
| UF | metaarkose |
| RT | arkose |
| meta-limestone | |
|---|---|
| USE | metalimestone |
| meta-ophiolite | |
|---|---|
| USE | ophiolite |
| meta-turbidite | |
|---|---|
| USE | turbidite |
| metaandesite | |
|---|---|
| USE | meta-andesite |
| metaanorthosite | |
|---|---|
| USE | meta-anorthosite |
| metaarkose | |
|---|---|
| USE | meta-arkose |
| metabasalt | |
|---|---|
| BT | metamorphic rocks |
| .metaigneous rocks | |
| ..metabasalt | |
| UF | metabasalts |
| RT | basalts |
| metabasalts | |
|---|---|
| USE | metabasalt |
| metabasite | |
|---|---|
| BT | metamorphic rocks |
| .metaigneous rocks | |
| ..metabasite | |
| metabentonite | |
|---|---|
| RT | bentonite |
| clay minerals | |
| K-bentonite | |
| metamorphic rocks | |
| metasedimentary rocks | |
| minerals | |
| SN | May be used as a rock and a mineral. Also index bentonite AND metasedimentary rocks; OR clay minerals as applicable. |
| metabolism | |
|---|---|
| RT | alteration |
| bioaccumulation | |
| bioavailability | |
| biochemistry | |
| biodegradation | |
| biogenic processes | |
| diet | |
| metabolites | |
| nutrition | |
| transformations | |
| metabolites | |
|---|---|
| RT | biodegradation |
| biogenic processes | |
| dechlorination | |
| environmental geology | |
| materials | |
| metabolism | |
| pollutants | |
| pollution | |
| SN | Products of metabolism. |
| metachert | |
|---|---|
| BT | metamorphic rocks |
| .metasedimentary rocks | |
| ..metachert | |
| RT | chert |
| SN | Added to Thesaurus in 1985. |
| metacinnabar | |
|---|---|
| BT | sulfides |
| .metacinnabar | |
| UF | metacinnabarite |
| RT | onofrite |
| metacinnabarite | |
|---|---|
| USE | metacinnabar |
| metaconglomerate | |
|---|---|
| BT | metamorphic rocks |
| .metasedimentary rocks | |
| ..metaconglomerate | |
| RT | conglomerate |
| metadacite | |
|---|---|
| BT | metamorphic rocks |
| .metaigneous rocks | |
| ..metadacite | |
| RT | dacites |
| metavolcanic rocks | |
| SN | Added to Thesaurus in 1985. |
| metadiabase | |
|---|---|
| BT | metamorphic rocks |
| .metaigneous rocks | |
| ..metadiabase | |
| UF | metadolerite |
| RT | diabase |
| metadiorite | |
|---|---|
| BT | metamorphic rocks |
| .metaigneous rocks | |
| ..metadiorite | |
| RT | diorites |
| metadolerite | |
|---|---|
| USE | metadiabase |
| metagabbro | |
|---|---|
| BT | metamorphic rocks |
| .metaigneous rocks | |
| ..metagabbro | |
| RT | gabbros |
| metagranite | |
|---|---|
| BT | metamorphic rocks |
| .metaigneous rocks | |
| ..metagranite | |
| RT | granites |
| metagraywacke | |
|---|---|
| BT | metamorphic rocks |
| .metasedimentary rocks | |
| ..metagraywacke | |
| UF | metagreywacke |
| RT | graywacke |
| metagreywacke | |
|---|---|
| USE | metagraywacke |
| metahalloysite | |
|---|---|
| BT | silicates |
| .sheet silicates | |
| ..clay minerals | |
| ...metahalloysite | |
| RT | halloysite |
| SN | Before 1982, also search halloysite. |
| metaigneous | |
|---|---|
| SN | A valid index term through 1977. After 1977, use metaigneous rocks. |
| metaigneous rocks | |
|---|---|
| BT | metamorphic rocks |
| .metaigneous rocks | |
| NT | meta-andesite |
| meta-anorthosite | |
| metabasalt | |
| metabasite | |
| metadacite | |
| metadiabase | |
| metadiorite | |
| metagabbro | |
| metagranite | |
| metakomatiite | |
| metaperidotite | |
| metapyroxenite | |
| metarhyolite | |
| metatuff | |
| serpentinite | |
| RT | igneous rocks |
| rocks | |
| SN | Before 1978, also search metaigneous. |
| metakaolin | |
|---|---|
| UF | metakaolinite |
| RT | clay minerals |
| kaolin | |
| metakaolinite | |
|---|---|
| USE | metakaolin |
| metakomatiite | |
|---|---|
| BT | metamorphic rocks |
| .metaigneous rocks | |
| ..metakomatiite | |
| RT | komatiite |
| SN | Added to Thesaurus in 1993. |
| metal | |
|---|---|
| SN | Not a valid GeoRef index term after 1969. Used in subfiles E and B. Now use metals or metal ores as applicable. |
| metal oxides | |
|---|---|
| SN | As of 1993, for mineralogical discussions use oxides AND metals. See also heavy metals and heavy minerals. |
| metalimestone | |
|---|---|
| BT | metamorphic rocks |
| .metasedimentary rocks | |
| ..metalimestone | |
| UF | meta-limestone |
| RT | limestone |
| Metaline Falls Washington | |
|---|---|
| BT | United States |
| .Washington | |
| ..Pend Oreille County Washington | |
| ...Metaline Falls Washington | |
| SN | Town in NE Washington. |
| Metaline Limestone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Cambrian | |
| ....Middle Cambrian | |
| .....Metaline Limestone | |
| RT | Washington |
| SN | NE Washington. Added to Thesaurus in 1985. |
| metallic meteorites | |
|---|---|
| USE | iron meteorites |
| metallic minerals | |
|---|---|
| USE | metal ores |
| metallogenesis | |
|---|---|
| USE | metallogeny |
| metallogenic epochs | |
|---|---|
| RT | economic geology |
| metal ores | |
| metallogenic provinces | |
| metallogeny | |
| mineral deposits, genesis | |
| mineralization | |
| SN | Added to Thesaurus in 1982. |
| metallogenic maps | |
|---|---|
| BT | maps |
| .metallogenic maps | |
| RT | mineral deposits, genesis |
| metal ores | |
| economic geology maps | |
| metallogenic provinces | |
| metallogeny | |
| SN | Added to Thesaurus in 1993. |
| metallogenic provinces | |
|---|---|
| UF | provinces, metallogenic |
| RT | mineral deposits, genesis |
| metal ores | |
| economic geology | |
| Iberian pyrite belt | |
| mineralization | |
| metallogenic epochs | |
| metallogenic maps | |
| Quadrilatero Ferrifero | |
| Thompson nickel belt | |
| Viburnum Trend | |
| SN | Some specific mines and mining districts may be found as See Also references in mines. |
| metallogeny | |
|---|---|
| UF | metallogenesis |
| RT | geosynclines |
| mineral deposits, genesis | |
| metal ores | |
| economic geology | |
| mineralization | |
| metallotects | |
| metallogenic epochs | |
| metallogenic maps | |
| metallography | |
|---|---|
| SN | Not a valid index term for GeoRef. See mineralogy and petrology. |
| metallotects | |
|---|---|
| RT | controls |
| metallogeny | |
| mineral deposits, genesis | |
| SN | Any geologic feature which has influenced concentration of elements, resulting in formation of mineral deposits. Added to Thesaurus in 1989. |
| metallurgy | |
|---|---|
| RT | alloys |
| annealing | |
| hydrometallurgy | |
| metal ores | |
| metals | |
| smelters | |
| metaluminous composition | |
|---|---|
| RT | composition |
| igneous rocks | |
| peralkalic composition | |
| peraluminous composition | |
| SN | Added to Thesaurus in 1995. |
| metamict | |
|---|---|
| SN | No longer a valid term for GeoRef as of 1981. Use metamict minerals. |
| metamict minerals | |
|---|---|
| RT | crystal structure |
| metamictization | |
| minerals | |
| radiation damage | |
| SN | Before 1981, search metamict. Added to Thesaurus in 1981. |
| metamictization | |
|---|---|
| RT | crystal structure |
| metamict minerals | |
| minerals | |
| radiation damage | |
| metamorphic aureoles | |
|---|---|
| USE | aureoles |
| metamorphic belts | |
|---|---|
| NT | greenstone belts |
| schist belts | |
| UF | belts, metamorphic |
| RT | plate tectonics |
| terranes | |
| Barrovian-type deposits | |
| metamorphic core complexes | |
| metamorphic core complexes | |
|---|---|
| UF | core complexes |
| RT | tectonics |
| plate tectonics | |
| terranes | |
| metamorphic rocks | |
| metamorphic belts | |
| shear zones | |
| complexes | |
| SN | Added to Thesaurus in 1985. |
| metamorphic differentiation | |
|---|---|
| SN | Not a valid index term for GeoRef. See migration of elements or zoning. |
| metamorphic grade | |
|---|---|
| USE | grade |
| metamorphic petrology | |
|---|---|
| SN | Not a valid GeoRef index term after 1970. Used in subfile N. Now use petrology or metamorphic rocks as applicable. |
| Metamorphic Petrology (category) | |
|---|---|
| SN | Igneous and metamorphic petrology, GeoRef category code 05, is one of thirty categories used to classify documents in GeoRef. Each reference in GeoRef is assigned one or more categories. Categories can be used, in addition to Terms, to refine searches (Se |
| metamorphic processes | |
|---|---|
| USE | metamorphism |
| metamorphic zone | |
|---|---|
| USE | aureoles |
| metamorphism | |
|---|---|
| NT | anchimetamorphism |
| autometamorphism | |
| burial metamorphism | |
| catazonal metamorphism | |
| contact metamorphism | |
| dynamic metamorphism | |
| epizonal metamorphism | |
| glauconitization | |
| granitization | |
| high-grade metamorphism | |
| low-grade metamorphism | |
| mesozonal metamorphism | |
| migmatization | |
| phyllonitization | |
| polymetamorphism | |
| prograde metamorphism | |
| regional metamorphism | |
| retrograde metamorphism | |
| shock metamorphism | |
| thermal metamorphism | |
| ultrametamorphism | |
| UF | metamorphic processes |
| RT | geochemistry |
| geochronology | |
| diagenesis | |
| anatexis | |
| deformation | |
| folds | |
| aureoles | |
| Barrovian-type deposits | |
| foliation | |
| boudinage | |
| cataclasis | |
| complexes | |
| feldspathization | |
| gra | |
| SN | Indexed with with specific type of metamorphism [e.g. anchimetamorphism, autometamorphism, burial metamorphism, contact metamorphism, dynamic metamorphism, grade, polymetamorphism, prograde metamorphism, regional metamorphism, retrograde metamorphism, rhe |
| metapelite | |
|---|---|
| BT | metamorphic rocks |
| .metasedimentary rocks | |
| ..metapelite | |
| metaperidotite | |
|---|---|
| BT | metamorphic rocks |
| .metaigneous rocks | |
| ..metaperidotite | |
| RT | peridotites |
| metaplutonic rocks | |
|---|---|
| BT | metamorphic rocks |
| .metaplutonic rocks | |
| RT | rocks |
| metamorphism | |
| plutonic rocks | |
| SN | Before 1978, also search metamorphic rocks AND metaplutonic. |
| metapyroxenite | |
|---|---|
| BT | metamorphic rocks |
| .metaigneous rocks | |
| ..metapyroxenite | |
| RT | pyroxenite |
| metarhyolite | |
|---|---|
| BT | metamorphic rocks |
| .metaigneous rocks | |
| ..metarhyolite | |
| RT | rhyolites |
| metasandstone | |
|---|---|
| BT | metamorphic rocks |
| .metasedimentary rocks | |
| ..metasandstone | |
| RT | sandstone |
| metasedimentary | |
|---|---|
| SN | A valid index term through 1977. After 1977, use metasedimentary rocks. |
| metasedimentary rocks | |
|---|---|
| BT | metamorphic rocks |
| .metasedimentary rocks | |
| NT | khondalite |
| meta-arkose | |
| metachert | |
| metaconglomerate | |
| metagraywacke | |
| metalimestone | |
| metapelite | |
| metasandstone | |
| metasiltstone | |
| paragneiss | |
| shungite | |
| RT | sedimentary rocks |
| rocks | |
| supracrustals | |
| K-bentonite | |
| metabentonite | |
| turbidite | |
| SN | Before 1978, also search metasedimentary; metasediments. |
| metasediments | |
|---|---|
| SN | A valid term through 1974. Use metasedimentary rocks. |
| metasiltstone | |
|---|---|
| BT | metamorphic rocks |
| .metasedimentary rocks | |
| ..metasiltstone | |
| RT | siltstone |
| metasomatic rocks | |
|---|---|
| BT | metamorphic rocks |
| .metasomatic rocks | |
| NT | fenite |
| greisen | |
| propylite | |
| serpentinite | |
| skarn | |
| steatite | |
| tactite | |
| talc rock | |
| UF | metasomatites |
| RT | petrology |
| rocks | |
| metasomatism | |
| alteration | |
| restites | |
| SN | As of 1978, term is used for any rock produced by replacement processes at constant volume with little disturbance of textural or structural features. |
| metasomatism | |
|---|---|
| NT | albitization |
| alunitization | |
| amphibolitization | |
| argillization | |
| chloritization | |
| feldspathization | |
| fenitization | |
| greisenization | |
| hydrothermal alteration | |
| kaolinization | |
| microclinization | |
| muscovitization | |
| palagonitization | |
| propylitization | |
| pyritization | |
| pyrometasomatism | |
| scapolitization | |
| sericitization | |
| serpentinization | |
| spilitization | |
| tourmalinization | |
| uralitization | |
| wall-rock alteration | |
| zeolitization | |
| RT | alteration |
| carbonatization | |
| diagenesis | |
| dolomitization | |
| enrichment | |
| fenite | |
| geochemistry | |
| granitization | |
| hydrothermal conditions | |
| igneous rocks | |
| intrusions | |
| lithogeochemistry | |
| localization | |
| magma transport | |
| metamorphic rocks | |
| metamorphism | |
| metasomatic rocks | |
| mineral depo | |
| SN | For documents before 1976, also search replacement. Indexed with material and specific process where available. |
| metasomatites | |
|---|---|
| USE | metasomatic rocks |
| metastibnite | |
|---|---|
| BT | sulfides |
| .metastibnite | |
| RT | stibnite |
| Metatheria | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Metatheria | |
| NT | Marsupialia |
| metatuff | |
|---|---|
| BT | metamorphic rocks |
| .metaigneous rocks | |
| ..metatuff | |
| RT | tuff |
| metaturbidite | |
|---|---|
| USE | turbidite |
| metavolcanic | |
|---|---|
| SN | A valid term through 1977. |
| metavolcanic rocks | |
|---|---|
| BT | metamorphic rocks |
| .metavolcanic rocks | |
| RT | rocks |
| volcanic rocks | |
| supracrustals | |
| metadacite | |
| SN | Before 1978, also search metamorphic rocks AND metavolcanic. |
| Metazoa | |
|---|---|
| RT | Invertebrata |
| microfossils | |
| Protista | |
| SN | Used as a general fossil term. Also search individual phyla and groups. Indexed with microfossils if applicable. |
| Metcalfe County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Metcalfe County Kentucky | |
| meteor crate |
|---|
| Meteor Crater | |
|---|---|
| BT | United States |
| .Arizona | |
| ..Coconino County Arizona | |
| ...Meteor Crater | |
| UF | Barringer Crater |
| Canyon Diablo Crater | |
| Coon Butte | |
| Crater Mound | |
| RT | impact features |
| Canyon Diablo Meteorite | |
| SN | In Canyon Diablo area of Coconino County, N central Arizona. Search in combination with Arizona. Added to Thesaurus in 1995. |
| meteor craters | |
|---|---|
| BT | impact features |
| .impact craters | |
| ..meteor craters | |
| UF | meteorite crater |
| RT | geochronology |
| tectonics | |
| meteorites | |
| geomorphology | |
| relative age | |
| breccia | |
| metamorphism | |
| deformation | |
| astroblemes | |
| craters | |
| bolides | |
| crater lakes | |
| cryptoexplosion features | |
| shatter cones | |
| resurfacing | |
| impacts | |
| shock metamorphism | |
| SN | Used for impact craters formed by the falling of a large meteorite onto a surface. |
| meteoric iron | |
|---|---|
| USE | iron meteorites |
| meteoric water | |
|---|---|
| RT | connate waters |
| ground water | |
| oil-water interface | |
| pore water | |
| reservoir rocks | |
| water | |
| SN | Added to Thesaurus in 1989. |
| meteorite crater | |
|---|---|
| USE | meteor craters |
| meteorite flux | |
|---|---|
| RT | meteorites |
| SN | Before 1981, search meteorites AND flux. Added to Thesaurus in 1981. |
| meteorites | |
|---|---|
| NT | Acfer Meteorites |
| Allan Hills Meteorites | |
| Asuka Meteorites | |
| Belgica Meteorites | |
| Coldwater Meteorites | |
| Elephant Moraine Meteorites | |
| iron meteorites | |
| Lewis Cliff Meteorites | |
| MacAlpine Hills Meteorites | |
| micrometeorites | |
| Odessa Meteorite | |
| Queen Alexandra Range Meteorites | |
| stony irons | |
| stony meteorites | |
| Yamato Meteorites | |
| UF | cosmolites |
| skystones | |
| RT | isotopes |
| impact features | |
| extraterrestrial geology | |
| asteroids | |
| australite | |
| bolides | |
| fireballs | |
| calcium-aluminum inclusions | |
| chaoite | |
| lonsdaleite | |
| chondrules | |
| cohenite | |
| comets | |
| interplanetary dust | |
| impacts | |
| impactite | |
| maskelynite | |
| kamacite | |
| majorite | |
| mesostasis | |
| meteor crate | |
| SN | Used for any meteoroid that has fallen to the Earth's surface in one piece or in fragments without being completely vaporized. Indexed with specific meteorite or group of meteorites if applicable. |
| meteoroids | |
|---|---|
| RT | asteroids |
| cosmic dust | |
| interplanetary space | |
| meteorites | |
| meteors | |
| parent bodies | |
| planets | |
| meteorology | |
|---|---|
| RT | aerosols |
| air-sea interface | |
| atmosphere | |
| atmospheric precipitation | |
| boundary interactions | |
| circulation | |
| climate | |
| clouds | |
| convection | |
| diffusion | |
| droplets | |
| electromagnetic waves | |
| geophysics | |
| humidity | |
| hurricanes | |
| hydrologic cycle | |
| hydrology | |
| ions | |
| lightning | |
| particles | |
| raindro | |
| SN | Primarily used for special indexes. |
| meteors | |
|---|---|
| NT | bolides |
| UF | shooting star |
| RT | planetology |
| meteorites | |
| interplanetary space | |
| meteoroids | |
| fireballs | |
| comets | |
| methane | |
|---|---|
| BT | organic compounds |
| .hydrocarbons | |
| ..aliphatic hydrocarbons | |
| ...alkanes | |
| ....methane | |
| RT | methanol |
| coalbed methane | |
| natural gas | |
| methanethiomethane | |
|---|---|
| USE | dimethyl sulfide |
| methanol | |
|---|---|
| BT | organic compounds |
| .alcohols | |
| ..methanol | |
| UF | methyl alcohol |
| RT | pollution |
| pollutants | |
| biodegradation | |
| volatiles | |
| methane | |
| petroleum products | |
| SN | For pollution studies, also index pollutants or water quality as applicable. Added to Thesaurus in 1995. |
| methodology | |
|---|---|
| USE | methods |
| methods | |
|---|---|
| UF | methodology |
| RT | fission-track dating |
| anvil cells | |
| applications | |
| geochemical methods | |
| beneficiation | |
| biogeochemical methods | |
| geobotanical methods | |
| downhole methods | |
| centrifuge methods | |
| citrate-bicarbonate-dithionite method | |
| educational resources | |
| geological methods | |
| geomorphological | |
| SN | This term applies to theoretical and experimental studies, while the term techniques is used for discussion of samples. |
| methods#mathematical geology#mathematical methods#methods#numerical analysis#out |
|---|
| Methow Basin | |
|---|---|
| BT | North America |
| .Methow Basin | |
| RT | Washington |
| British Columbia | |
| Methow River valley | |
| SN | Sedimentary basin extending from N Washington to SW British Columbia. Indexed with Washington and/or British Columbia as applicable. Added to Thesaurus in 1989. |
| Methow River valley | |
|---|---|
| BT | United States |
| .Washington | |
| ..Okanogan County Washington | |
| ...Methow River valley | |
| RT | Methow Basin |
| SN | Okanogan County on British Columbia border. Also search Methow River. |
| methoxychlor | |
|---|---|
| USE | DDT |
| methyl alcohol | |
|---|---|
| USE | methanol |
| methyl mercury | |
|---|---|
| USE | methylmercury |
| methyl sulfide | |
|---|---|
| USE | dimethyl sulfide |
| methylation | |
|---|---|
| RT | chemical reactions |
| geochemistry | |
| processes | |
| methylmercury | |
|---|---|
| UF | methyl mercury |
| RT | fungicides |
| pesticides | |
| pollutants | |
| toxic materials | |
| mercury | |
| organo-metallics | |
| SN | CHmethylmercury compounds. Fungicides, disinfectants. |
| Metohija Yugoslavia | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Yugoslavia | |
| ...Serbia | |
| ....Kosovo-Metohija Yugoslavia | |
| .....Metohija Yugoslavia | |
| SN | District in SW Serbia forming part of autonomous province of Kosovo-Metohija. |
| metolachlor | |
|---|---|
| BT | pesticides |
| .herbicides | |
| ..metolachlor | |
| RT | agrochemicals |
| pollutants | |
| metribuzin | |
|---|---|
| BT | pesticides |
| .herbicides | |
| ..triazines | |
| ...metribuzin | |
| RT | pollutants |
| toxic materials | |
| Meurthe-et-Moselle France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Meurthe-et-Moselle France | |
| RT | Lorraine |
| Laneuveville-devant-Nancy Boring | |
| SN | Department in NE France. |
| Meuse France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Meuse France | |
| NT | Verdun France |
| SN | Department in NE France. |
| Meuse River | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..Meuse River | |
| UF | Maas River |
| RT | France |
| Netherlands | |
| Belgium | |
| SN | Rises in NE France, flows N across E Belgium and, as the Maas River, flows through the Netherlands entering the North Sea through its estuary, the Hollandsch Diep. Indexed with countries as applicable. |
| Meuse Valley | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..Meuse Valley | |
| UF | Maas Valley |
| RT | France |
| Netherlands | |
| Belgium | |
| SN | River valley. Known as the Maas Valley in the Netherlands. Indexed with countries as applicable. |
| Mexicali Mexico | |
|---|---|
| BT | Mexico |
| .Baja California Norte Mexico | |
| ..Mexicali Mexico | |
| Mexicali Valley | |
|---|---|
| BT | North America |
| .Mexicali Valley | |
| RT | Mexico |
| Baja California | |
| California | |
| Imperial County California | |
| Imperial Valley | |
| SN | Baja California, NW Mexico and extends into Imperial Valley irrigation area, SE California. Indexed with regions as applicable. Added to Thesaurus in 1989. |
| Mexican neovolcanic belt | |
|---|---|
| USE | Mexican volcanic belt |
| Mexican volcanic belt | |
|---|---|
| BT | Mexico |
| .Mexican volcanic belt | |
| UF | Mexican neovolcanic belt |
| RT | Guerrero Mexico |
| Sierra Madre Occidental | |
| Colima | |
| Jalisco Mexico | |
| Colima Mexico | |
| Sierra Madre del Sur | |
| Michoacan Mexico | |
| Nayarit Mexico | |
| Puebla Mexico | |
| Oaxaca Mexico | |
| SN | SW Mexico. Indexed with states as applicable. Added to Thesaurus in 1989. |
| Mexico Basin | |
|---|---|
| SN | Not a valid term for GeoRef. See Sigsbee Deep or Valley of Mexico. |
| Mexico City earthquake 1985 | |
|---|---|
| BT | earthquakes |
| .Mexico City earthquake 1985 | |
| UF | Michoacan earthquake 1985 |
| RT | Mexico |
| Michoacan Mexico | |
| SN | Michoacan, Mexico. Before 1993, also search Mexico earthquake 1985. Added to Thesaurus in 1993. |
| Mexico City Mexico | |
|---|---|
| BT | Mexico |
| .Mexico state | |
| ..Federal District Mexico | |
| ...Mexico City Mexico | |
| RT | Valley of Mexico |
| SN | Central Mexico. In Federal District Mexico. |
| Mexico D.F. | |
|---|---|
| USE | Federal District Mexico |
| Mexico state | |
|---|---|
| BT | Mexico |
| .Mexico state | |
| NT | Federal District Mexico |
| RT | Guerrero Terrane |
| Valley of Mexico | |
| Popocatepetl | |
| SN | State N, E and W of Federal District. |
| meymechite | |
|---|---|
| USE | meimechite |
| Mezen River basin | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Mezen River basin | |
| BT | Europe |
| .Mezen River basin | |
| RT | Arkhangelsk Russian Federation |
| Komi Russian Federation | |
| SN | N central Arkhangelsk Oblast in NW European Russian Federation. Also search Mezen River. This term has multiple hierarchies. |
| Mezen Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Arkhangelsk Russian Federation | |
| ...Mezen Russian Federation | |
| SN | Town on the Mezen River in Arkhangelsk Oblast in NW European Russian Federation. Before 1993, Mezen Russian Republic was also used. This term has multiple hierarchies. |
| Mezhrechye Belarus | |
|---|---|
| BT | Europe |
| .Belarus | |
| ..Mezhrechye Belarus | |
| SN | Village in W Belarus. This term has multiple hierarchies. |
| Mg | |
|---|---|
| USE | magnesium |
| Mg-24/Mg-25 | |
|---|---|
| USE | Mg-25/Mg-24 |
| Mg-24/Mg-26 | |
|---|---|
| USE | Mg-26/Mg-24 |
| Mg-25/Mg-24 | |
|---|---|
| BT | isotopes |
| .stable isotopes | |
| ..Mg-25/Mg-24 | |
| BT | metals |
| .alkaline earth metals | |
| ..magnesium | |
| ...Mg-25/Mg-24 | |
| UF | Mg-24/Mg-25 |
| RT | isotope ratios |
| SN | This term has multiple hierarchies. |
| Mg-26 | |
|---|---|
| BT | isotopes |
| .stable isotopes | |
| ..Mg-26 | |
| BT | metals |
| .alkaline earth metals | |
| ..magnesium | |
| ...Mg-26 | |
| RT | Mg-26/Mg-24 |
| SN | This term has multiple hierarchies. |
| Mg-26/Mg-24 | |
|---|---|
| BT | isotopes |
| .stable isotopes | |
| ..Mg-26/Mg-24 | |
| BT | metals |
| .alkaline earth metals | |
| ..magnesium | |
| ...Mg-26/Mg-24 | |
| UF | Mg-24/Mg-26 |
| RT | isotope ratios |
| Mg-26 | |
| SN | This term has multiple hierarchies. |
| MHD | |
|---|---|
| SN | Not a valid term for GeoRef. See magnetohydrodynamics if applicable. |
| mi |
|---|
| Miami County Indiana | |
|---|---|
| BT | Indiana |
| .Miami County Indiana | |
| Miami County Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..Miami County Kansas | |
| Miami County Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Miami County Ohio | |
| Miami Florida | |
|---|---|
| BT | United States |
| .Florida | |
| ..Dade County Florida | |
| ...Miami Florida | |
| SN | City in SE Florida. |
| Miami Limestone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Quarternary | |
| ....Pleistocene | |
| .....Miami Limestone | |
| RT | Florida |
| SN | Miami Oolite, Pleistocene. It is a soft white oolitic limestone, containing streaks of thin irregular layers of calcite separating less crystalline streaks. In S Florida. |
| Mianwali Pakistan | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..Pakistan | |
| ...Punjab Pakistan | |
| ....Mianwali Pakistan | |
| SN | Town and district in NW Punjab Province, NE Pakistan. |
| Miaoli Taiwan | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Taiwan | |
| ...Miaoli Taiwan | |
| SN | Town in NW Taiwan. |
| miargyrite | |
|---|---|
| BT | sulfosalts |
| .sulfantimonites | |
| ..miargyrite | |
| miaskite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..syenites | |
| ...miaskite | |
| mica | |
|---|---|
| SN | As of 1981, no longer a valid term for GeoRef. See mica group. Use mica deposits for mica as a commodity. |
| mica deposits | |
|---|---|
| RT | glauconite deposits |
| insulation materials | |
| mica group | |
| Plotina Deposit | |
| vermiculite deposits | |
| Michelle For |
|---|
| Michelle Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Devonian | |
| ....Middle Devonian | |
| .....Michelle Formation | |
| RT | Canada |
| Yukon Territory | |
| Northwest Territories | |
| SN | Composed of black calcareous shale and aphanitic silty limestone. In W Northwest Territories and Yukon Territory. |
| michenerite | |
|---|---|
| BT | bismuthides |
| .michenerite | |
| Michigamme Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Paleoproterozoic | |
| ....Michigamme Formation | |
| RT | Ontario |
| Wisconsin | |
| Michigan | |
| Baraga Group | |
| SN | In Baraga Group. Ontario, NW Michigan, NE Wisconsin. Added to Thesaurus in 1993. |
| Michigan Basin | |
|---|---|
| BT | North America |
| .Michigan Basin | |
| UF | Lake Michigan Basin |
| RT | Ontario |
| Illinois | |
| Indiana | |
| Ohio | |
| Wisconsin | |
| Michigan Lower Peninsula | |
| Michigan Upper Peninsula | |
| Michigan | |
| Bass Islands Dolomite | |
| SN | Term revised in 1989. Structural basin with its center in the Michigan Lower Peninsula. Located in NE Illinois, N Indiana, Michigan, NW Ohio, E Wisconsin and W Ontario. Indexed with states and province as applicable. |
| Michigan Upper Peninsula | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Upper Peninsula | |
| NT | Alger County Michigan |
| Baraga County Michigan | |
| Chippewa County Michigan | |
| Delta County Michigan | |
| Dickinson County Michigan | |
| Gogebic County Michigan | |
| Houghton County Michigan | |
| Iron County Michigan | |
| Keweenaw County Michigan | |
| Keweenaw Peninsula | |
| Luce County Michigan | |
| Mackinac County Michigan | |
| Marquette County Michigan | |
| Menominee County Michigan | |
| Ontonagon County Michigan | |
| Porcupine Mountains | |
| Schoolcraft County Michigan | |
| UF | Northern Peninsula, Michigan |
| Upper Peninsula, Michigan | |
| RT | Michigan Lower Peninsula |
| Michigan Basin | |
| SN | N part of state between Lake Michigan and Lake Superior. Before 1981, search Michigan AND (Upper Peninsula OR Northern Peninsula). Added to Thesaurus in 1981. |
| Michipicoten Belt | |
|---|---|
| BT | North America |
| .Canadian Shield | |
| ..Superior Province | |
| ...Michipicoten Belt | |
| RT | Ontario |
| Wawa Belt | |
| SN | Greenstone belt in Wawa sub-province of the Superior Province, Wawa and Gamitagama area of S Ontario. Added to Thesaurus in 1993. |
| Michipicoten Island | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Ontario | |
| ...Michipicoten Island | |
| RT | Algoma District Ontario |
| Thunder Bay District Ontario | |
| SN | NE Lake Superior. |
| Michoacan earthquake 1985 | |
|---|---|
| USE | Mexico City earthquake 1985 |
| Michoacan Mexico | |
|---|---|
| BT | Mexico |
| .Michoacan Mexico | |
| NT | Los Azufres |
| Paricutin | |
| RT | Guerrero Terrane |
| Mexican volcanic belt | |
| Michoacan-Guanajuato volcanic field | |
| Mexico City earthquake 1985 | |
| SN | State in SW Mexico, bordering on the Pacific Ocean. |
| Michoacan-Guanajuato volcanic field | |
|---|---|
| BT | Mexico |
| .Michoacan-Guanajuato volcanic field | |
| RT | Guanajuato Mexico |
| Michoacan Mexico | |
| SN | Michoacan and Guanajuato, S central Mexico. Indexed with states as applicable. Added to Thesaurus in 1989. |
| micrinite | |
|---|---|
| BT | macerals |
| .inertinite | |
| ..micrinite | |
| micrite | |
|---|---|
| BT | sedimentary rocks |
| .carbonate rocks | |
| ..limestone | |
| ...micrite | |
| RT | biomicrite |
| micritization | |
| microcrystalline limestone | |
| micritization | |
|---|---|
| RT | carbonate rocks |
| grain size | |
| micrite | |
| SN | Added to Thesaurus in 1989. |
| microbial mats | |
|---|---|
| USE | algal mats |
| microbiological geology | |
|---|---|
| USE | geomicrobiology |
| microbiology, geological | |
|---|---|
| USE | geomicrobiology |
| microbreccia | |
|---|---|
| BT | sedimentary rocks |
| .clastic rocks | |
| ..microbreccia | |
| RT | breccia |
| sandstone | |
| terrigenous materials | |
| megabreccia | |
| microcline | |
|---|---|
| BT | silicates |
| .framework silicates | |
| ..feldspar group | |
| ...alkali feldspar | |
| ....microcline | |
| RT | K-feldspar |
| microclinization | |
| amazonite | |
| microclinization | |
|---|---|
| BT | metasomatism |
| .microclinization | |
| RT | processes |
| alteration | |
| microcline | |
| SN | Added to Thesaurus in 1989. |
| Microcodium | |
|---|---|
| BT | Plantae |
| .algae | |
| ..Microcodium | |
| RT | microfossils |
| SN | Indexed with microfossils if applicable. |
| microcomputers | |
|---|---|
| BT | computers |
| .microcomputers | |
| UF | microprocessors |
| RT | data processing |
| computer networks | |
| minicomputers | |
| Macintosh | |
| hand calculators | |
| workstations | |
| SN | Before 1993, also search personal computers or PCs if applicable. |
| microcontinents | |
|---|---|
| RT | aseismic ridges |
| bottom features | |
| continental crust | |
| ocean floors | |
| plate tectonics | |
| tectonics | |
| SN | Added to Thesaurus in 1993. |
| microcracks | |
|---|---|
| BT | cracks |
| .microcracks | |
| UF | microfractures |
| RT | engineering geology |
| rock mechanics | |
| deformation | |
| fractures | |
| microcraters | |
|---|---|
| RT | craters |
| Moon | |
| microcrystalline limestone | |
|---|---|
| BT | sedimentary rocks |
| .carbonate rocks | |
| ..limestone | |
| ...microcrystalline limestone | |
| RT | micrite |
| SN | Added to Thesaurus in 1982. |
| microdiorite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..diorites | |
| ...microdiorite | |
| microearthquakes | |
|---|---|
| BT | earthquakes |
| .microearthquakes | |
| RT | seismology |
| microseisms | |
| microelement | |
|---|---|
| USE | trace elements |
| microfacies | |
|---|---|
| RT | facies |
| micropaleontology | |
| petrography | |
| thin sections | |
| microfauna | |
|---|---|
| USE | microfossils |
| microflora | |
|---|---|
| USE | microfossils |
| microfossils | |
|---|---|
| NT | Archeocopida |
| Charophyta | |
| Chitinozoa | |
| Conodonta | |
| Fusulinina | |
| Leperditicopida | |
| Lituolidae | |
| problematic microfossils | |
| scolecodonts | |
| UF | microfauna |
| microflora | |
| RT | Acantharina |
| acritarchs | |
| algae | |
| Allogromiina | |
| Alveolina | |
| Alveolinellidae | |
| Ammobaculites | |
| Ammodiscacea | |
| Ammodiscidae | |
| Ammonia | |
| Ammonia beccarii | |
| Amphistegina | |
| Anomalinidae | |
| Archaeolithothamnium | |
| Archaeomonadaceae | |
| Asterocyclina | |
| Astrorhizidae | |
| Ataxophragmiidae | |
| bacteria | |
| Bai | |
| SN | Before 1998, narrower terms included algae, Ostracoda, Protista (Foraminifera, Radiolaria), palynomorphs. |
| microfractures | |
|---|---|
| USE | microcracks |
| microgabbro | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..gabbros | |
| ...microgabbro | |
| microgranite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..granites | |
| ...microgranite | |
| microhardness | |
|---|---|
| RT | hardness |
| minerals | |
| physical properties | |
| microlite | |
|---|---|
| BT | halides |
| .fluorides | |
| ..microlite | |
| BT | oxides |
| .niobates | |
| ..niobotantalates | |
| ...microlite | |
| RT | pyrochlore |
| SN | This term has multiple hierarchies. |
| micrometeorites | |
|---|---|
| BT | meteorites |
| .micrometeorites | |
| SN | Very small meteorite or meteoritic particle with diameter generally less than a millimeter. |
| micromorphology | |
|---|---|
| RT | morphology |
| soils | |
| Micronesia | |
|---|---|
| BT | Oceania |
| .Micronesia | |
| NT | Caroline Islands |
| Mariana Islands | |
| Marshall Islands | |
| Nauru Island | |
| UF | Federated States of Micronesia |
| RT | Pacific Ocean |
| West Pacific Ocean Islands | |
| Kiribati | |
| SN | Collective name for islands E of the Philippine Islands and S of Japan. Indexed with island groups as applicable. |
| microorganisms | |
|---|---|
| RT | algae |
| bacteria | |
| biota | |
| faunal studies | |
| floral studies | |
| fungi | |
| geomicrobiology | |
| microfossils | |
| pollen | |
| Protista | |
| soils | |
| SN | For several types. |
| micropaleontology | |
|---|---|
| RT | biologic evolution |
| Foraminifera | |
| fossil record | |
| fossils | |
| geomicrobiology | |
| microfacies | |
| paleobotany | |
| paleontology | |
| palynology | |
| sample preparation | |
| stratigraphy | |
| SN | Used for the discipline as a whole. |
| micropegmatite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..granites | |
| ...micropegmatite | |
| RT | graphic granite |
| pegmatite | |
| microperthite | |
|---|---|
| BT | silicates |
| .framework silicates | |
| ..feldspar group | |
| ...alkali feldspar | |
| ....microperthite | |
| RT | perthite |
| micropetrological unit | |
|---|---|
| USE | macerals |
| microplankton | |
|---|---|
| USE | plankton |
| microplates | |
|---|---|
| RT | Easter Microplate |
| Explorer Plate | |
| Juan Fernandez Microplate | |
| plate tectonics | |
| plates | |
| microprobe, electron | |
|---|---|
| USE | electron probe |
| microprocessors | |
|---|---|
| USE | microcomputers |
| micropulsations | |
|---|---|
| SN | As of 1993, no longer a valid term for GeoRef. Usually out-of-scope. Used with aurora. |
| microscope techniques | |
|---|---|
| USE | microscope methods |
| microscopic methods | |
|---|---|
| USE | microscope methods |
| microscopy, electron | |
|---|---|
| USE | electron microscopy |
| microscopy, ore | |
|---|---|
| USE | ore microscopy |
| microseismic methods | |
|---|---|
| RT | geophysical methods |
| microseisms | |
| seismic methods | |
| SN | Added to Thesaurus in 1985. |
| microseismicity | |
|---|---|
| USE | seismicity |
| microseisms | |
|---|---|
| RT | earthquakes |
| microearthquakes | |
| microseismic methods | |
| noise | |
| seismology | |
| microstructure | |
|---|---|
| SN | A valid term through 1978. After 1978, use ultrastructure. |
| microstylolites | |
|---|---|
| BT | sedimentary structures |
| .secondary structures | |
| ..microstylolites | |
| RT | stylolites |
| stylolitization | |
| microsyenite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..syenites | |
| ...microsyenite | |
| microtectonics | |
|---|---|
| SN | A valid term through 1975. After 1975, use structural analysis. |
| microtektites | |
|---|---|
| BT | tektites |
| .microtektites | |
| microthermometry | |
|---|---|
| RT | fluid inclusions |
| geologic thermometry | |
| phase equilibria | |
| SN | Added to Thesaurus in 1985. |
| Microtus | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Rodentia | |
| .......Myomorpha | |
| ........Cricetidae | |
| .........Microtus | |
| SN | Genus. |
| microwave exploration | |
|---|---|
| USE | microwave methods |
| microwave methods | |
|---|---|
| UF | microwave exploration |
| RT | well-logging |
| geophysical methods | |
| geophysical surveys | |
| remote sensing | |
| methods | |
| radar methods | |
| ERS-1 | |
| ground-penetrating radar | |
| telemetry | |
| SN | Before 1978, also search microwave. For surveys, also geophysical surveys and the area. |
| microwave spectroscopy | |
|---|---|
| BT | spectroscopy |
| .microwave spectroscopy | |
| RT | chemical analysis |
| analysis | |
| SN | Before 1978, also search spectroscopy AND microwave. |
| microzonation | |
|---|---|
| RT | earthquake prediction |
| earthquakes | |
| geologic hazards | |
| ground motion | |
| seismic response | |
| seismic risk | |
| seismic zoning | |
| SN | Added to Thesaurus in 1985. |
| Mid- |
|---|
| Mid-Antarctic Ridge | |
|---|---|
| BT | Antarctic Ocean |
| .Mid-Antarctic Ridge | |
| SN | Added to Thesaurus in 1981. |
| Mid-Arctic Ocean Ridge | |
|---|---|
| BT | Arctic Ocean |
| .Mid-Arctic Ocean Ridge | |
| UF | Gakkel Ridge |
| Nansen-Gakkel Ridge | |
| RT | mid-ocean ridges |
| Eurasia Basin | |
| SN | Added to Thesaurus in 1981. |
| Mid-Atlantic Ridge | |
|---|---|
| BT | Atlantic Ocean |
| .Mid-Atlantic Ridge | |
| NT | Snakepit hydrothermal field |
| TAG hydrothermal field | |
| RT | Atlantis fracture zone |
| DSDP Site 10 | |
| DSDP Site 11 | |
| DSDP Site 14 | |
| DSDP Site 15 | |
| DSDP Site 16 | |
| DSDP Site 17 | |
| DSDP Site 18 | |
| DSDP Site 332 | |
| DSDP Site 333 | |
| DSDP Site 334 | |
| DSDP Site 335 | |
| DSDP Site 353 | |
| DSDP Site 395 | |
| DSDP Site 396 | |
| DSDP Site 407 | |
| DSDP Site 408 | |
| DSDP Site 410 | |
| D | |
| SN | Extends parallel to the continental margins in mid ocean in both the North and South Atlantic oceans. Rises 6000 ft. above the ocean floor and surfaces as the Azores, Ascension Island, Saint Helena, and Tristan da Cunha islands. |
| Mid-Cayman Rise | |
|---|---|
| BT | Atlantic Ocean |
| .North Atlantic | |
| ..Caribbean Sea | |
| ...Mid-Cayman Rise | |
| SN | NW Caribbean Sea, S of Cuba. Added to Thesaurus in 1981. |
| Mid-Continent | |
|---|---|
| USE | Midcontinent |
| Mid-continent Rift | |
|---|---|
| USE | Keweenawan Rift |
| mid-crustal | |
|---|---|
| SN | Not a valid term for GeoRef. See middle crust. |
| Mid-Indian Ocean Ridge | |
|---|---|
| USE | Mid-Indian Ridge |
| Mid-Indian Ridge | |
|---|---|
| BT | Indian Ocean |
| .Mid-Indian Ridge | |
| NT | Central Indian Ridge |
| Southeast Indian Ridge | |
| UF | Indian Ocean Ridge |
| Indian Ridge | |
| Mid-Indian Ocean Ridge | |
| RT | Antarctic Ocean |
| mid-ocean ridges | |
| DSDP Site 251 | |
| SN | Extends from S of the Maldives, S and SE into Antarctic waters. |
| mid-ocean ridge basalts | |
|---|---|
| BT | igneous rocks |
| .volcanic rocks | |
| ..basalts | |
| ...mid-ocean ridge basalts | |
| UF | MORB |
| RT | sea-floor spreading |
| mid-ocean ridges | |
| spreading centers | |
| mid-oceanic ridges | |
|---|---|
| USE | mid-ocean ridges |
| Mid-Pacific Mountains | |
|---|---|
| BT | Pacific Ocean |
| .North Pacific | |
| ..Mid-Pacific Mountains | |
| NT | Resolution Seamount |
| RT | DSDP Site 313 |
| DSDP Site 463 | |
| Leg 62 | |
| Leg 143 | |
| ODP Site 865 | |
| ODP Site 866 | |
| ODP Site 867 | |
| ODP Site 868 | |
| SN | NW central Pacific, N of the Marshall Islands. Added to Thesaurus in 1995. |
| Mid-Pacific Rise | |
|---|---|
| SN | After 1994, not a valid term for GeoRef. See Mid-Pacific Mountains if applicable. |
| Midcontinent | |
|---|---|
| BT | United States |
| .Midcontinent | |
| UF | Mid-Continent |
| RT | New Mexico |
| Montana | |
| Iowa | |
| Kentucky | |
| Missouri | |
| Oklahoma | |
| Colorado | |
| Illinois | |
| Indiana | |
| Nebraska | |
| North Dakota | |
| Ohio | |
| Minnesota | |
| Kansas | |
| Michigan | |
| South Dakota | |
| Arkansas | |
| North American Craton | |
| Midcontinent geophysical anomaly | |
| Reelfoot Rift | |
| Southern Oklahoma Aulacogen | |
| Tennes | |
| SN | Mid-America between the Appalachians and the Rocky Mountains. Indexed with states as applicable. |
| Midcontinent geophysical anomaly | |
|---|---|
| BT | United States |
| .Midcontinent geophysical anomaly | |
| UF | Midcontinent high |
| RT | Iowa |
| Nebraska | |
| Kansas | |
| Midcontinent | |
| SN | Central and W Iowa, NE Kansas and SE Nebraska. Indexed with states as applicable. Added to Thesaurus in 1985. |
| Midcontinent high | |
|---|---|
| USE | Midcontinent geophysical anomaly |
| Midcontinent Rift | |
|---|---|
| USE | Keweenawan Rift |
| Midcontinent Rift System | |
|---|---|
| USE | Keweenawan Rift |
| Middendorf Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Middendorf Formation | |
| RT | South Carolina |
| Georgia | |
| Atlantic Coastal Plain | |
| SN | E Georgia and E South Carolina. Added to Thesaurus in 1985. |
| middens | |
|---|---|
| NT | packrat middens |
| RT | archaeological sites |
| archaeology | |
| diet | |
| Neotoma | |
| paleoecology | |
| SN | Added to Thesaurus in 1985. |
| Middle America Trench | |
|---|---|
| BT | Pacific Ocean |
| .North Pacific | |
| ..Northeast Pacific | |
| ...Middle America Trench | |
| RT | ODP Site 1039 |
| DSDP Site 565 | |
| Leg 84 | |
| DSDP Site 566 | |
| DSDP Site 567 | |
| DSDP Site 568 | |
| DSDP Site 570 | |
| Leg 170 | |
| SN | Off W coast of Mexico and Central America. This term has multiple hierarchies. |
| middle Archean | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Archean | |
| ...middle Archean | |
| Middle Atlantic Bight | |
|---|---|
| BT | United States |
| .Middle Atlantic Bight | |
| RT | Atlantic Coastal Plain |
| North Atlantic | |
| SN | Off E coast of United States, from Cape Hatteras to Cape Cod. Added to Thesaurus in 1985. |
| Middle Atlas | |
|---|---|
| BT | Africa |
| .North Africa | |
| ..Atlas Mountains | |
| ...Moroccan Atlas Mountains | |
| ....Middle Atlas | |
| SN | Range of the Atlas Mountains N and E of the High Atlas Mountains in N central Morocco. This term has multiple hierarchies. |
| Middle Carboniferous | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Middle Carboniferous | |
| RT | Dinantian |
| Upper Carboniferous | |
| middle Cenozoic | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...middle Cenozoic | |
| SN | Added to Thesaurus in 1989. |
| Middle Cretaceous | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Middle Cretaceous | |
| NT | Bhuj Series |
| Winton Formation | |
| RT | Lower Cretaceous |
| Upper Cretaceous | |
| Cenomanian | |
| Turonian | |
| middle crust | |
|---|---|
| BT | crust |
| .middle crust | |
| RT | discontinuities |
| earthquakes | |
| faults | |
| intrusions | |
| lower crust | |
| Conrad discontinuity | |
| upper crust | |
| diapirism | |
| SN | Also search mid-crustal. Added to Thesaurus in 1995. |
| Middle East | |
|---|---|
| BT | Asia |
| .Middle East | |
| NT | Arava Valley |
| Cyprus | |
| Dead Sea | |
| Dead Sea Rift | |
| Iran | |
| Iraq | |
| Israel | |
| Jordan | |
| Lebanon | |
| Mesopotamia | |
| Palestine | |
| Samaria | |
| Syria | |
| Tigris River | |
| Turkey | |
| Wadi Araba | |
| Zagros | |
| RT | United Arab Emirates |
| Yemen | |
| Nubian Sandstone | |
| Troodos Ophiolite | |
| Egypt | |
| Zubair Formation | |
| Arabian Peninsula | |
| Jordan River | |
| Jordan Valley | |
| Red Sea Basin | |
| Ghareb Formation | |
| Sinjar Formation | |
| Menuha Formation | |
| Kuwait | |
| Oman | |
| Qatar | |
| SN | An indefinite and unofficial term comprising a region including Cyprus and the countries of SW Asia. Indexed with countries as applicable. |
| Middle Franconia | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Bavaria Germany | |
| ....Middle Franconia | |
| RT | Franconia |
| Franconian Jura | |
| SN | Part of old historical region of Franconia. A hilly region in Franconian Jura in N central Bavaria, S Germany. |
| middle Holocene | |
|---|---|
| BT | locene |
| .middle Holocene | |
| middle Liassic | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Jurassic | |
| ....Lower Jurassic | |
| .....middle Liassic | |
| NT | Domerian |
| Pliensbachian | |
| SN | Added to Thesaurus in 1981. |
| middle Mesozoic | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...middle Mesozoic | |
| RT | upper Mesozoic |
| Middle Mississippian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Mississippian | |
| .....Middle Mississippian | |
| Middle Nile Valley | |
|---|---|
| BT | Africa |
| .North Africa | |
| ..Egypt | |
| ...Middle Nile Valley | |
| RT | Nile Valley |
| SN | Used for the Nile Valley in Egypt. Added to Thesaurus in 1981. |
| middle Paleocene | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Paleocene | |
| .....middle Paleocene | |
| middle Paleozoic | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...middle Paleozoic | |
| NT | Hillabee Chlorite Schist |
| RT | Acadian Phase |
| Phuket Group | |
| Middle Permian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Permian | |
| ....Middle Permian | |
| RT | Kungurian |
| Lower Permian | |
| Rotliegendes | |
| Upper Permian | |
| Barren Measures | |
| Middle Pleistocene | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Quarternary | |
| ....Pleistocene | |
| .....Middle Pleistocene | |
| NT | Elsterian |
| middle Pliocene | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Pliocene | |
| .....middle Pliocene | |
| NT | Bone Valley Formation |
| Peace Valley Beds | |
| RT | upper Pliocene |
| lower Pliocene | |
| middle Precambrian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..middle Precambrian | |
| RT | Aphebian |
| middle Proterozoic | |
|---|---|
| USE | Mesoproterozoic |
| middle Quaternary | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Quaternary | |
| ....middle Quaternary | |
| Middle Run Fo |
|---|
| Middle Run Formation | |
|---|---|
| RT | Indiana |
| Kentucky | |
| Ohio | |
| Precambrian | |
| Proterozoic | |
| SN | May be Precambrian in age. In the East Continent Rift basin, Cincinnati Arch area of W Ohio, N central Kentucky and SE Indiana. Indexed with age as applicable. Added to Thesaurus in 1995. |
| Middle Stone Age | |
|---|---|
| USE | Mesolithic |
| middle Tertiary | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Tertiary | |
| ....middle Tertiary | |
| NT | Soda Lake Shale Member |
| RT | upper Tertiary |
| lower Tertiary | |
| Middle Tunguska River | |
|---|---|
| USE | Stony Tunguska River |
| Middle West (United States) | |
|---|---|
| USE | Midwest |
| Middlesex County Connecticut | |
|---|---|
| BT | United States |
| .Connecticut | |
| ..Middlesex County Connecticut | |
| SN | S Connecticut. |
| Middlesex County Massachusetts | |
|---|---|
| BT | United States |
| .Massachusetts | |
| ..Middlesex County Massachusetts | |
| NT | Cambridge Massachusetts |
| RT | Merrimack River valley |
| SN | NE Massachusetts. |
| Middlesex County New Jersey | |
|---|---|
| BT | United States |
| .New Jersey | |
| ..Middlesex County New Jersey | |
| RT | Raritan Bay |
| SN | E New Jersey. |
| Middlesex County Ontario | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Ontario | |
| ...Middlesex County Ontario | |
| Middlesex County Virginia | |
|---|---|
| BT | United States |
| .Virginia | |
| ..Middlesex County Virginia | |
| SN | E Virginia. |
| Middleton Island | |
|---|---|
| RT | Gulf of Alaska |
| Southern Alaska | |
| Yakataga Formation | |
| SN | S Alaska, in Gulf of Alaska. May also occur in other locations. Indexed with Southern Alaska or region as applicable. Added to Thesaurus in 1989. |
| Midlan |
|---|
| Midland Basin | |
|---|---|
| BT | United States |
| .Texas | |
| ..Midland Basin | |
| RT | Permian Basin |
| SN | W Texas. Indexed with counties as applicable. |
| Midland County Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Lower Peninsula | |
| ...Midland County Michigan | |
| SN | E central Michigan. |
| Midland County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Midland County Texas | |
| NT | Midland Texas |
| RT | Azalea Field |
| SN | W Texas. |
| Midland Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Midland County Texas | |
| ...Midland Texas | |
| SN | City in W Texas. |
| Midland Valley | |
|---|---|
| RT | Ireland |
| New Brunswick | |
| Scotland | |
| SN | S Scotland. Also in New Brunswick and other locations. Indexed with regions as applicable. Added to Thesaurus in 1981. |
| Midlands | |
|---|---|
| RT | Derbyshire England |
| Dudley England | |
| East Midlands | |
| England | |
| Leicestershire England | |
| Northamptonshire England | |
| Nottinghamshire England | |
| Pennines | |
| Staffordshire England | |
| Warwickshire England | |
| Worcestershire England | |
| SN | English region including the highly industrialized central counties. Refers especially to Derbyshire, Leicestershire, Northamptonshire, Nottinghamshire, Rutlandshire, Staffordshire, and Warwickshire. May occur in other locations. Indexed with England or r |
| Midlothian Scotland | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....Scotland | |
| .....Midlothian Scotland | |
| NT | Edinburgh Scotland |
| RT | Lothian region Scotland |
| SN | Formerly Edinburghshire. Former county in SE Scotland on S shore of Firth of Forth. Split between Borders region and Lothian region in 1974. |
| Midnite Mine | |
|---|---|
| BT | United States |
| .Washington | |
| ..Midnite Mine | |
| RT | mines |
| uranium ores | |
| Stevens County Washington | |
| Spokane County Washington | |
| SN | Uranium mine in NE Washington. Added to Thesaurus in 1985. |
| midoceanic ridges | |
|---|---|
| USE | mid-ocean ridges |
| Midway | |
|---|---|
| BT | East Pacific Ocean Islands |
| .Midway | |
| UF | Midway Atoll |
| Midway Islands | |
| SN | Two small islands (Eastern and Sand), parts of a low coral atoll under U.S. Navy control 1300 miles WNW of Honolulu. |
| Midway Atoll | |
|---|---|
| USE | Midway |
| Midway Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Paleocene | |
| .....Midway Group | |
| RT | Kentucky |
| Missouri | |
| Illinois | |
| Mississippi | |
| Texas | |
| Alabama | |
| Florida | |
| Georgia | |
| Tennessee | |
| Arkansas | |
| Clayton Formation | |
| Naheola Formation | |
| Porters Creek Formation | |
| SN | In SE United States from W Georgia to S Texas, Arkansas, SW Illinois, Kentucky, SE Missouri, and W Tennessee. Added to Thesaurus in 1981. |
| Midway Islands | |
|---|---|
| USE | Midway |
| Midway-Sunset Field | |
|---|---|
| BT | United States |
| .California | |
| ..Midway-Sunset Field | |
| UF | Sunset-Midway oil field |
| RT | oil and gas fields |
| Kern County California | |
| San Luis Obispo California | |
| SN | Kern and San Luis Obispo counties, SW California. Indexed with Kern County California and/or San Luis Obispo County California as applicable. Added to Thesaurus in 1995. |
| Midwest | |
|---|---|
| BT | United States |
| .Midwest | |
| UF | Middle West (United States) |
| North Central (United States) | |
| North-Central (United States) | |
| RT | Eastern Gas Shales Project |
| Tippecanoe Sequence | |
| Mississippi Valley | |
| Sauk Sequence | |
| SN | As of 1993, term is used only for broad general discussions. N part of central U.S. Region comprising states N of the Ohio and Missouri rivers plus the E edge of the Great Plains. Before 1978, also search United States AND middle west or north-central or |
| Midwest Lake | |
|---|---|
| RT | Athabasca District |
| Saskatchewan | |
| SN | N Saskatchewan. Indexed with province or region as applicable. Added to Thesaurus in 1985. |
| Midwest Lake Deposits | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..Saskatchewan | |
| ...Midwest Lake Deposits | |
| RT | Athabasca District |
| uranium ores | |
| SN | N Saskatchewan. Before 1993, also search Midwest Lake. Added to Thesaurus in 1993. |
| Mie Japan | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Japan | |
| ...Mie Japan | |
| UF | Miye Japan |
| RT | Ise Bay |
| Honshu | |
| Oita Japan | |
| Kinki Japan | |
| Kii Peninsula | |
| Tonankai earthquake 1944 | |
| SN | Prefecture in S central Honshu. Also a town on Kyushu. Indexed with Honshu or Oita Japan as applicable. |
| Miechow Poland | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Poland | |
| ...Cracow Poland | |
| ....Miechow Poland | |
| SN | Town in S Poland. |
| Miette Complex | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Devonian | |
| ....Miette Complex | |
| RT | Canada |
| Miette Group | |
| SN | Devonian reef complex. Distinguish from Miette Group. |
| Miette Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Miette Group | |
| RT | Alberta |
| Canada | |
| British Columbia | |
| Miette Complex | |
| SN | Composed of a basal unit of argillite and argillaceous sandstone, succeeded by 2, 000 feet of sandstone, grit, conglomerate, and argillite, which is overlain by 3, 000 feet of argillite, and at the top by a carbonate. Distinguish from the Devonian Miette |
| Mifflin County Pennsylvania | |
|---|---|
| BT | United States |
| .Pennsylvania | |
| ..Mifflin County Pennsylvania | |
| mighei type | |
|---|---|
| USE | CM chondrites |
| migmatites | |
|---|---|
| BT | metamorphic rocks |
| .migmatites | |
| NT | agmatite |
| anatexite | |
| ectinite | |
| embrechite | |
| leucosomes | |
| RT | restites |
| flow texture | |
| migmatization | |
| ptygmatic folds | |
| migmatitization | |
|---|---|
| USE | migmatization |
| migmatization | |
|---|---|
| BT | metamorphism |
| .migmatization | |
| UF | migmatitization |
| RT | migmatites |
| migration | |
|---|---|
| RT | biogeography |
| land bridges | |
| migration of elements | |
| petroleum | |
| petroleum accumulation | |
| petroleum exploration | |
| poststack migration | |
| prestack migration | |
| primary migration | |
| secondary migration | |
| seismic migration | |
| transport | |
| SN | Used primarily for animal migration and petroleum migration. Use seismic migration if applicable. Migration of elements may be used for geochemistry. Use transport for pollution studies. |
| migration (seismic) | |
|---|---|
| USE | seismic migration |
| Mihara (Mount) | |
|---|---|
| USE | Mount Mihara |
| Mihara Volcano | |
|---|---|
| USE | Mount Mihara |
| Mihara-Yama | |
|---|---|
| USE | Mount Mihara |
| Miho Bay | |
|---|---|
| BT | nshu |
| .Miho Bay | |
| RT | Japan Sea |
| SN | Inlet of Japan Sea in S Honshu. |
| Mikabu System | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Mikabu System | |
| RT | Honshu |
| Japan | |
| SN | Mikabu Series, Paleozoic. Consists of amphibole, pyroxene, semi-schists, and phyllites with limestones and quartzites. |
| Mikawa | |
|---|---|
| BT | nshu |
| .Aichi Japan | |
| ..Mikawa | |
| SN | Former province in central Honshu. Now part of Aichi Prefecture. |
| Mikhailovka Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Volgograd Russian Federation | |
| ...Mikhailovka Russian Federation | |
| SN | City in Volgograd Oblast 110 miles NW of Volgograd in European Russian Federation. Before 1993, Mikhailovka Russian Republic was also used. This term has multiple hierarchies. |
| Milam County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Milam County Texas | |
| SN | Central Texas. |
| Milan Italy | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Lombardy Italy | |
| ....Milan Italy | |
| UF | Milano Italy |
| SN | Province including the city in W Lombardy, N Italy. |
| Milankovitch forcing | |
|---|---|
| USE | orbital forcing |
| Milankovitch theory | |
|---|---|
| RT | atmosphere |
| cyclostratigraphy | |
| Earth | |
| eccentricity | |
| glacial geology | |
| glaciation | |
| insolation | |
| motions | |
| obliquity of the ecliptic | |
| orbital forcing | |
| paleoclimatology | |
| periodicity | |
| precession | |
| SN | Added to Thesaurus in 1985. |
| Milano Italy | |
|---|---|
| USE | Milan Italy |
| milarite | |
|---|---|
| BT | silicates |
| .ring silicates | |
| ..milarite | |
| RT | aluminosilicates |
| Mildura Australia | |
|---|---|
| BT | Australasia |
| .Australia | |
| ..Victoria Australia | |
| ...Mildura Australia | |
| SN | Town on the Murray River 300 miles NW of Melbourne in NW Victoria. |
| Miliolacea | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Miliolina | |
| ....Miliolacea | |
| NT | Alveolinellidae |
| Miliolidae | |
| Ophthalmidium | |
| Quinqueloculina | |
| RT | microfossils |
| SN | Indexed with microfossils if applicable. |
| Miliolidae | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Miliolina | |
| ....Miliolacea | |
| .....Miliolidae | |
| RT | microfossils |
| SN | Family. Indexed with microfossils if applicable. |
| Miliolina | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Miliolina | |
| NT | Miliolacea |
| RT | microfossils |
| SN | Indexed with microfossils if applicable. |
| military facilities | |
|---|---|
| RT | airports |
| engineering geology | |
| environmental geology | |
| land use | |
| military geology | |
| wars | |
| SN | Added to Thesaurus in 1998. |
| military geology | |
|---|---|
| RT | geology |
| military facilities | |
| wars | |
| World War II | |
| SN | For papers on impact of geosciences on military operations. Use military facilities for site-specific environmental problems. For conflicts, also use wars. Added to Thesaurus in 1981. |
| Milk River Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Milk River Formation | |
| RT | Alberta |
| Canada | |
| SN | Composed of well-sorted sandstones. In S Alberta. |
| Mill Creek | |
|---|---|
| RT | Lassen Volcanic National Park |
| California | |
| Redwood Creek | |
| Sacramento River | |
| SN | Rises in Lassen Volcanic National Park and flows into Sacramento River. Indexed with counties or regions as applicable. |
| Millard County Utah | |
|---|---|
| BT | United States |
| .Utah | |
| ..Millard County Utah | |
| NT | House Range |
| RT | Sevier Desert |
| Wah Wah Mountains | |
| Black Rock Desert | |
| Drum Mountains | |
| SN | W central Utah. |
| Millboro Shale | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Devonian | |
| ....Millboro Shale | |
| RT | Virginia |
| Pennsylvania | |
| Maryland | |
| West Virginia | |
| SN | Middle and Upper Devonian. Maryland, S Pennsylvania, Virginia and E West Virginia. Added to Thesaurus in 1989. |
| Millbrig Bentonite Bed | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Middle Ordovician | |
| .....Millbrig Bentonite Bed | |
| RT | Iowa |
| Missouri | |
| Illinois | |
| Wisconsin | |
| Minnesota | |
| Decorah Shale | |
| SN | Of Glencoe Member of Spechts Ferry Formation in NW Illinois and Wisconsin. Also may be of Decorah Shale in Iowa, Minnesota, and Missouri. Added to Thesaurus in 1995. |
| Mille Lacs County Minnesota | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Mille Lacs County Minnesota | |
| Miller County Arkansas | |
|---|---|
| BT | United States |
| .Arkansas | |
| ..Miller County Arkansas | |
| Miller County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Miller County Georgia | |
| Miller County Missouri | |
|---|---|
| BT | United States |
| .Missouri | |
| ..Miller County Missouri | |
| millerite | |
|---|---|
| BT | sulfides |
| .millerite | |
| UF | nickel pyrites |
| RT | nickel ores |
| Millevaches Plateau | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Central Massif | |
| ....Millevaches Plateau | |
| RT | Correze France |
| Creuse France | |
| SN | Tableland of the Central Massif, in Correze and Creuse departments, central France. Added to Thesaurus in 1981. |
| Mills County Iowa | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Mills County Iowa | |
| SN | SW Iowa. |
| Mills County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Mills County Texas | |
| SN | Central Texas. |
| Millstone Grit | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Upper Carboniferous | |
| .....Millstone Grit | |
| SN | Provincial series, Europe. |
| Milne Land | |
|---|---|
| BT | Arctic region |
| .Greenland | |
| ..Milne Land | |
| RT | Scoresby Sound |
| SN | An island in Scoresby Sound, a deep inlet on the E coast. |
| Milos | |
|---|---|
| BT | Mediterranean region |
| .Aegean Islands | |
| ..Greek Aegean Islands | |
| ...Cyclades | |
| ....Milos | |
| SN | SE Aegean Islands. Before 1993, also search Melos and Greece. This term has multiple hierarchies. Added to Thesaurus in 1993. |
| milton County Ohio | |
|---|---|
| NT | Cincinnati Ohio |
| Milwaukee County Wisconsin | |
|---|---|
| BT | United States |
| .Wisconsin | |
| ..Milwaukee County Wisconsin | |
| NT | Milwaukee Wisconsin |
| SN | SE Wisconsin. |
| Milwaukee Wisconsin | |
|---|---|
| BT | United States |
| .Wisconsin | |
| ..Milwaukee County Wisconsin | |
| ...Milwaukee Wisconsin | |
| SN | City on Lake Michigan in SE Wisconsin. |
| Mimas Satel |
|---|
| Mimas Satellite | |
|---|---|
| RT | icy satellites |
| satellites | |
| Saturn | |
| Voyager Program | |
| SN | One of satellites of Saturn. Before 1985, also search Mimas AND Saturn. Added to Thesaurus in 1985. |
| Mimbral, Arroyo El | |
|---|---|
| USE | Arroyo El Mimbral |
| mimetite | |
|---|---|
| BT | arsenates |
| .mimetite | |
| BT | halides |
| .chlorides | |
| ..mimetite | |
| SN | This term has multiple hierarchies. |
| Mimomys | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Rodentia | |
| .......Myomorpha | |
| ........Cricetidae | |
| .........Mimomys | |
| RT | Arvicolidae |
| SN | Genus. |
| Minas Basin | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Maritime Provinces | |
| ...Nova Scotia | |
| ....Minas Basin | |
| UF | Fundy Basin |
| RT | Bay of Fundy |
| Cobequid Bay | |
| SN | NE extension of Bay of Fundy in central Nova Scotia. Also search Minas AND appropriate area term. |
| Minas Gerais Brazil | |
|---|---|
| BT | South America |
| .Brazil | |
| ..Minas Gerais Brazil | |
| NT | Araxa Brazil |
| Itabira Brazil | |
| Ouro Preto Brazil | |
| Pocos de Caldas Brazil | |
| Quadrilatero Ferrifero | |
| RT | Sao Francisco Basin |
| Areado Formation | |
| Brazilian Shield | |
| Sao Francisco Craton | |
| Serra do Espinhaco | |
| Bambui Group | |
| Bauru Formation | |
| Irati Formation | |
| SN | State in E central Brazil. |
| Minas Series | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Minas Series | |
| RT | Brazil |
| Mindanao | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Philippine Islands | |
| ...Mindanao | |
| NT | Kiamba Philippine Islands |
| RT | Surigao del Norte Philippine Islands |
| SN | Second largest and southernmost major island of the Philippine Islands. |
| Mindel | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Quarternary | |
| ....Pleistocene | |
| .....Mindel | |
| RT | Elsterian |
| SN | Europe. Above Gunz, below Riss. |
| Mindel-Riss | |
|---|---|
| USE | Mindel/Riss Interglacial |
| Mindel-Riss Interglacial | |
|---|---|
| USE | Mindel/Riss Interglacial |
| Mindel/Riss Interglacial | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Quarternary | |
| ....Pleistocene | |
| .....Mindel/Riss Interglacial | |
| UF | Mindel-Riss |
| Mindel-Riss Interglacial | |
| SN | Europe. Term applied in the Alps to the second interglacial stage of the Pleistocene Epoch, after the Mindel glacial stage and before the Riss. |
| Mindoro | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Philippine Islands | |
| ...Mindoro | |
| RT | Mansalay Formation |
| SN | Island in central Philippines SW of Luzon. |
| mine dewatering | |
|---|---|
| RT | drainage |
| drawdown | |
| SN | Restricted to artificial methods. Added to Thesaurus in 1993. |
| mine drainage | |
|---|---|
| RT | acid mine drainage |
| drainage | |
| environmental geology | |
| mines | |
| SN | As of 1993, use for natural drainage. Added to Thesaurus in 1981. |
| mine reactivation | |
|---|---|
| RT | economics |
| land use | |
| mines | |
| SN | Added to Thesaurus in 1981. |
| mine reclamation | |
|---|---|
| SN | Not a valid term for GeoRef. Use mines and reclamation. |
| Miner County South Dakota | |
|---|---|
| BT | United States |
| .South Dakota | |
| ..Miner County South Dakota | |
| minera |
|---|
| mineragraphy | |
|---|---|
| USE | ore microscopy |
| mineral assemblages | |
|---|---|
| RT | autometamorphism |
| metamorphic rocks | |
| paragenesis | |
| mineral associations | |
|---|---|
| SN | A valid term through 1977. Use mineral assemblages. |
| mineral chemistry | |
|---|---|
| USE | crystal chemistry |
| mineral cleavage | |
|---|---|
| RT | cleavage |
| minerals | |
| SN | Before 1981, search cleavage AND minerals. Added to Thesaurus in 1981. |
| mineral collecting | |
|---|---|
| SN | As of 1981, no longer a valid term for GeoRef. Use collecting. |
| mineral collections | |
|---|---|
| USE | collections |
| mineral composition | |
|---|---|
| RT | composition |
| modal analysis | |
| petrographic norms | |
| Mineral County Colorado | |
|---|---|
| BT | United States |
| .Colorado | |
| ..Mineral County Colorado | |
| NT | Creede Caldera |
| Creede Colorado | |
| Creede mining district | |
| SN | SW Colorado. |
| Mineral County Montana | |
|---|---|
| BT | United States |
| .Montana | |
| ..Mineral County Montana | |
| RT | Coeur d'Alene mining district |
| SN | W Montana. |
| Mineral County Nevada | |
|---|---|
| BT | United States |
| .Nevada | |
| ..Mineral County Nevada | |
| RT | Walker Lake |
| Stewart Valley | |
| SN | W Nevada. |
| Mineral County West Virginia | |
|---|---|
| BT | United States |
| .West Virginia | |
| ..Mineral County West Virginia | |
| SN | E West Virginia. |
| mineral data | |
|---|---|
| UF | mineral descriptions |
| RT | minerals |
| clay mineralogy | |
| mineralogy | |
| data | |
| mineral depo |
|---|
| mineral deposits, |
|---|
| mineral deposits, genesis | |
|---|---|
| RT | algoma-type deposits |
| alpine-type deposits | |
| Barrovian-type deposits | |
| bauxitization | |
| beneficiation | |
| besshi-type deposits | |
| blind deposits | |
| carlin-type deposits | |
| cementation deposits | |
| controls | |
| cyprus-type deposits | |
| detrital deposits | |
| discoveries | |
| disseminated deposits | |
| D | |
| SN | Used for substantial discussions of the genesis of ore deposits. Does not include water resources or energy sources. Indexed with specific type of process or control where applicable. |
| mineral descriptions | |
|---|---|
| USE | mineral data |
| mineral economics | |
|---|---|
| RT | economic geology |
| economics | |
| mineral resources | |
| ore grade | |
| possibilities | |
| productive capacity | |
| SN | As of 1985, used for economic discussions of commodities (list C), excluding the energy sources, and water resources. Use economics for the energy sources, and water resources. To exclude very general treatments, search (mineral economics or economics) no |
| mineral exploration | |
|---|---|
| UF | ore exploration |
| RT | economic geology |
| geochemical anomalies | |
| geochemical methods | |
| feasibility studies | |
| Bear-Slave Operation | |
| biogeochemical methods | |
| geobotanical methods | |
| blind deposits | |
| boulder trains | |
| discoveries | |
| exploration | |
| CUSMAP | |
| dispersion patterns | |
| Exclusive Economic Zone | |
| geoche | |
| SN | Used primarily for the application of methods in relation to the commodity terms (list C), excluding the energy sources and water resources. May be used for substantial discussions of exploration for the commodities, excluding the energy sources and water |
| mineral facies | |
|---|---|
| SN | A valid term through 1976. Use facies. |
| mineral inclusions | |
|---|---|
| BT | inclusions |
| .mineral inclusions | |
| RT | fluid inclusions |
| host rocks | |
| xenocrysts | |
| San Carlos Olivine | |
| xenoliths | |
| SN | Used for a solid-phase mineral within a solid-phase mineral. |
| mineral interlayer | |
|---|---|
| UF | interlayering |
| RT | minerals |
| clay minerals | |
| sheet silicates | |
| crystal structure | |
| crystal chemistry | |
| layered materials | |
| mixed-layer minerals | |
| SN | Also search mineral interlayers. Added to Thesaurus in 1995. |
| mineral inventory | |
|---|---|
| UF | mineral list |
| miscellaneous minerals | |
| sundry minerals | |
| RT | minerals |
| mineral resources | |
| mineralogy | |
| inventory | |
| SN | Used for inventories of minerals. Includes use for the case of several mineral groups when the topic is not emphasized or for a mineral of unknown affinity. Added to Thesaurus in 1993. |
| mineral list | |
|---|---|
| USE | mineral inventory |
| mineral localities | |
|---|---|
| RT | collecting |
| geologic sites | |
| popular geology | |
| SN | Use for collecting. Added to Thesaurus in 1981. |
| Mineral Mountains | |
|---|---|
| BT | United States |
| .Utah | |
| ..Beaver County Utah | |
| ...Mineral Mountains | |
| RT | Basin and Range Province |
| SN | SW Utah. Added to Thesaurus in 1985. |
| mineral physics | |
|---|---|
| SN | Not a valid term for GeoRef. See phase transitions, geophysics, or specific property. |
| mineral resins | |
|---|---|
| USE | resins |
| mineral resources | |
|---|---|
| RT | affinities |
| AMRAP | |
| depletion | |
| economic geology | |
| environmental geology | |
| exploration | |
| Law of the Sea | |
| mineral deposits, genesis | |
| mineral economics | |
| mineral exploration | |
| mineral inventory | |
| minerals | |
| ocean floors | |
| potential deposits | |
| raw materials | |
| resources | |
| strategic miner | |
| SN | For very general treatments of both metal and nonmetal deposits. Commodity. See List C. |
| mineral sequence | |
|---|---|
| USE | paragenesis |
| mineral soap | |
|---|---|
| USE | bentonite |
| mineral synthesis | |
|---|---|
| SN | A valid term through 1970. After 1970, use synthesis with crystal growth or with phase equilibria. |
| mineral waters | |
|---|---|
| RT | brines |
| ground water | |
| medicinal waters | |
| springs | |
| thermal waters | |
| water | |
| mineral zoning | |
|---|---|
| SN | A valid term through 1975. See zoning, crystal zoning. |
| mineral-water interface | |
|---|---|
| UF | water-mineral interface |
| RT | interfaces |
| halmyrolysis | |
| water-rock interaction | |
| sediment-water interface | |
| SN | Also search mineral-water interaction. Indexed with specific minerals as applicable. Added to Thesaurus in 1995. |
| mineralization | |
|---|---|
| RT | biomineralization |
| localization | |
| metallogenic epochs | |
| metallogenic provinces | |
| metallogeny | |
| mineral deposits, genesis | |
| mineralized mud | |
| ore-forming fluids | |
| SN | Often used with ore deposits. For paleontology use fossilization or biomineralization. |
| mineralized mud | |
|---|---|
| RT | mineralization |
| mud | |
| SN | Added to Thesaurus in 1985. |
| mineralogy | |
|---|---|
| RT | atomic packing |
| bibliography | |
| catalogs | |
| clay mineralogy | |
| collecting | |
| collections | |
| crystal chemistry | |
| crystal growth | |
| crystal structure | |
| crystal zoning | |
| crystallography | |
| decrepitation | |
| goniometry | |
| lexicons | |
| microscope methods | |
| mineral data | |
| mineral inventory | |
| minerals | |
| opti | |
| SN | Used for the discipline as a whole. |
| Mineralogy (category) | |
|---|---|
| SN | Mineralogy, GeoRef category code 01, is one of thirty categories used to classify documents in GeoRef. Each reference in GeoRef is assigned one or more categories. Categories can be used, in addition to Terms, to refine searches (See List A.). |
| minerals | |
|---|---|
| RT | accessory minerals |
| alloys | |
| antimonates | |
| antimonides | |
| antimonites | |
| arsenates | |
| arsenides | |
| arsenites | |
| authigenesis | |
| authigenic minerals | |
| bismuthides | |
| borates | |
| carbonates | |
| cell dimensions | |
| chromates | |
| clay mineralogy | |
| coexisting minerals | |
| collecting | |
| collections | |
| color centers | |
| SN | Used for descriptions of mineral occurrence or of the minerals themselves. For searching techniques, see list L. General term. Index only for general studies. Specific mineral names or groups should be used when applicable. |
| minerals described | |
|---|---|
| SN | Not a valid GeoRef index term after 1968. See minerals; mineral data. |
| minerals in meteorites | |
|---|---|
| SN | Not a valid GeoRef index term. Place minerals in appropriate group. |
| mines | |
|---|---|
| NT | abandoned mines |
| coal mines | |
| small mines | |
| RT | acid mine drainage |
| Adamow Mine | |
| Akenobe Mine | |
| Allarechenskiy | |
| Alligator Ridge Mine | |
| Alligator Rivers Field | |
| Alma mining district | |
| Ambrosia Lake mining district | |
| Anvil Points Mine | |
| Ashio Mine | |
| Asse Mine | |
| Balmat-Edwards mining district | |
| Bathurst mining district | |
| Belcha | |
| SN | Before 1998, this term was limited to papers on mine engineering. For specific mines, also search: term for specific mine OR (term for region around the mine AND term for commodity mined). See list C for commodity terms. Indexed with in combination with s |
| minette | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..lamprophyres | |
| ...minette | |
| Mingo County West Virginia | |
|---|---|
| BT | United States |
| .West Virginia | |
| ..Mingo County West Virginia | |
| minicomputers | |
|---|---|
| BT | computers |
| .minicomputers | |
| RT | data processing |
| computer networks | |
| microcomputers | |
| hand calculators | |
| workstations | |
| minidae | |
|---|---|
| NT | Australopithecinae |
| Homo | |
| Paranthropus | |
| Pithecanthropus | |
| Ramapithecus | |
| Minidoka County Idaho | |
|---|---|
| BT | United States |
| .Idaho | |
| ..Minidoka County Idaho | |
| mining districts | |
|---|---|
| SN | Not a valid GeoRef term. Use names of individual districts as applicable. |
| mining engineering | |
|---|---|
| SN | Not a valid term for GeoRef. See engineering geology; mining geology. |
| mining geology | |
|---|---|
| RT | abandoned mines |
| backfill | |
| chimneys | |
| coal mines | |
| cut-and-fill mining | |
| dredging | |
| economic geology | |
| engineering geology | |
| environmental geology | |
| evaluation | |
| explosions | |
| gases | |
| geology | |
| geophysical methods | |
| geophysical surveys | |
| horizontal drilling | |
| hydraulic fracturing | |
| leach | |
| SN | Geology applied to mining operations. |
| mining legislation | |
|---|---|
| RT | Law of the Sea |
| legislation | |
| mining | |
| SN | Added to Thesaurus in 1981. |
| mining, cut-and-fill | |
|---|---|
| USE | cut-and-fill mining |
| mining, open-pit | |
|---|---|
| USE | open-pit mining |
| minipermeameters | |
|---|---|
| BT | permeameters |
| .minipermeameters | |
| UF | probe permeameters |
| RT | petroleum engineering |
| instruments | |
| reservoir properties | |
| flowmeters | |
| pressuremeters | |
| SN | Added to Thesaurus in 1995. |
| Minneapolis Minnesota | |
|---|---|
| BT | nnepin County Minnesota |
| .Minneapolis Minnesota | |
| SN | City in SE central Minnesota. |
| Minnehaha County South Dakota | |
|---|---|
| BT | United States |
| .South Dakota | |
| ..Minnehaha County South Dakota | |
| SN | E South Dakota. |
| Minnelusa Formatio |
|---|
| Minnelusa Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Minnelusa Formation | |
| RT | Permian |
| Pennsylvanian | |
| Wyoming | |
| South Dakota | |
| SN | Pennsylvanian and Permian. Composed of sandstones and evaporites. W South Dakota, and NE Wyoming. Indexed with ages as applicable. |
| Minnesota River valley | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Minnesota River valley | |
| SN | S Minnesota. |
| Mino Belt | |
|---|---|
| BT | nshu |
| .Mino Belt | |
| UF | Mino Terrane |
| SN | Orogenic belt in central Honshu, central Japan. Added to Thesaurus in 1989. |
| Mino Terrane | |
|---|---|
| USE | Mino Belt |
| Minoan eruption | |
|---|---|
| SN | Not a valid term for GeoRef. Search Santorin AND eruptions. (Note added 1995.) |
| minor elements | |
|---|---|
| RT | chemical elements |
| major elements | |
| nutrients | |
| trace elements | |
| minor planets | |
|---|---|
| USE | asteroids |
| minor-element analyses | |
|---|---|
| RT | analysis |
| chemical analysis | |
| chemical elements | |
| major-element analyses | |
| trace-element analyses | |
| SN | Before 1974, also search minor element analyses. |
| Minorca | |
|---|---|
| BT | Mediterranean region |
| .Balearic Islands | |
| ..Minorca | |
| UF | Menorca |
| SN | Second largest of Spain's Balearic Islands off E coast of Spanish mainland. This term has multiple hierarchies. |
| Minorca Rise | |
|---|---|
| BT | Mediterranean Sea |
| .West Mediterranean | |
| ..Minorca Rise | |
| UF | Menorca Rise |
| RT | Leg 161 |
| ODP Site 975 | |
| SN | Off Minorca in the Mediterranean Sea. Added to Thesaurus in 1981. |
| minorities | |
|---|---|
| RT | education |
| geologists | |
| geology | |
| practice | |
| SN | Also search women if applicable. Added to Thesaurus in 1995. |
| Minsk Belarus | |
|---|---|
| BT | Europe |
| .Belarus | |
| ..Minsk Belarus | |
| SN | Oblast and city in central Belarus. This term has multiple hierarchies. |
| Minturn Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Minturn Formation | |
| RT | Colorado |
| SN | Consists chiefly of grayish to greenish sandstones, conglomerates, and shales or siltstones. Central Colorado. |
| Minusinsk Basin | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Minusinsk Basin | |
| BT | Asia |
| .West Siberia | |
| ..Minusinsk Basin | |
| RT | coal fields |
| Krasnoyarsk Russian Federation | |
| SN | Coal basin in extreme S Krasnoyarsk Kray in SSW Siberia. A good agricultural region. This term has multiple hierarchies. |
| Minusinsk Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Krasnoyarsk Russian Federation | |
| ...Minusinsk Russian Federation | |
| SN | Town in SW Krasnoyarsk Kray on the Yenisei River in SSW Siberia. Before 1993, Minusinsk Russian Republic was also used. This term has multiple hierarchies. |
| minyulite | |
|---|---|
| BT | halides |
| .fluorides | |
| ..minyulite | |
| BT | phosphates |
| .minyulite | |
| SN | This term has multiple hierarchies. |
| miogeoclines | |
|---|---|
| USE | miogeosynclines |
| miogeosynclines | |
|---|---|
| UF | miogeoclines |
| miomagmatic zone | |
| RT | tectonics |
| geosynclines | |
| eugeosynclines | |
| Miogypsina | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Rotaliina | |
| ....Rotaliacea | |
| .....Miogypsinidae | |
| ......Miogypsina | |
| RT | microfossils |
| SN | Genus. Indexed with microfossils if applicable. |
| Miogypsinidae | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Rotaliina | |
| ....Rotaliacea | |
| .....Miogypsinidae | |
| NT | Miogypsina |
| RT | microfossils |
| SN | Family. Indexed with microfossils if applicable. |
| miomagmatic zone | |
|---|---|
| USE | miogeosynclines |
| miospores | |
|---|---|
| BT | palynomorphs |
| .miospores | |
| NT | Cicatricosisporites |
| Classopollis | |
| Florinites | |
| Lycopodiumsporites | |
| Momipites | |
| Normapolles | |
| pollen | |
| RT | microfossils |
| biostratigraphy | |
| Artemisia | |
| megaspores | |
| Cladophlebis | |
| Compositae | |
| spores | |
| Cyperaceae | |
| Dryas | |
| exine | |
| sporopollenin | |
| monolete taxa | |
| SN | Indexed with microfossils if applicable. |
| miptera | |
|---|---|
| NT | Heteroptera |
| Homoptera | |
| Mir Pipe | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Yakutia Russian Federation | |
| ...Mir Pipe | |
| RT | Siberian Platform |
| Vilyuy Syneclise | |
| SN | Kimberlite pipe. This term has multiple hierarchies. Added to Thesaurus in 1989. |
| mirabilite | |
|---|---|
| BT | sulfates |
| .mirabilite | |
| Mirador Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....Mirador Formation | |
| RT | Venezuela |
| Miramichi Bay | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Maritime Provinces | |
| ...New Brunswick | |
| ....Miramichi Bay | |
| RT | Gulf of Saint Lawrence |
| SN | Inlet of Gulf of Saint Lawrence. Also search Miramichi. |
| Miramichi earthquake 1982 | |
|---|---|
| BT | earthquakes |
| .Miramichi earthquake 1982 | |
| UF | New Brunswick earthquake 1982 |
| RT | Canada |
| New Brunswick | |
| SN | Epicenter at Miramichi, New Brunswick, Canada. Added to Thesaurus in 1989. |
| Miranda Satellite | |
|---|---|
| RT | icy satellites |
| satellites | |
| Uranus | |
| Voyager Program | |
| SN | One of the satellites of Uranus. Before 1989, also search Miranda and Uranus. Added to Thesaurus in 1989. |
| Miranda Venezuela | |
|---|---|
| BT | South America |
| .Venezuela | |
| ..Miranda Venezuela | |
| SN | State on the Caribbean Sea. |
| mires | |
|---|---|
| NT | bogs |
| fens | |
| marshes | |
| peatlands | |
| swamps | |
| RT | ecology |
| fluvial features | |
| lacustrine features | |
| geomorphology | |
| palsas | |
| paludal environment | |
| paludal sedimentation | |
| peat | |
| shore features | |
| Sphagnum | |
| surface water | |
| wetlands | |
| SN | Collective geomorphic feature term for peat-forming environments. See environment or wetlands for paleoecology or ecology studies. Before 1998, also search bogs, marshes, swamps, and fens. Indexed with lacustrine features or shore features or fluvial feat |
| Mirgalimsay Kazakhstan | |
|---|---|
| BT | Commonwealth of Independent States |
| .Kazakhstan | |
| ..Mirgalimsay Kazakhstan | |
| SN | Village in S near Syr Darya River. This term has multiple hierarchies. |
| Mirny | |
|---|---|
| USE | Mirnyy Station |
| Mirnyy Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Mirnyy Russian Federation | |
| RT | Yakutia Russian Federation |
| SN | City in Yakutia. May also occur in other locations. Before 1993, Mirnyy Russian Republic was also used. Indexed with region as applicable. |
| Mirnyy Station | |
|---|---|
| BT | Antarctica |
| .Mirnyy Station | |
| UF | Mirny |
| SN | USSR IGY station on Davis Sea near Shackleton Ice Shelf on the Indian Ocean side. Before 1981, also search (Mirnyy OR Mirny) AND Antarctica. Added to Thesaurus in 1981. |
| Mirror Lake | |
|---|---|
| RT | Carroll County New Hampshire |
| SN | E central New Hampshire. Indexed with county or regions as applicable. Added to Thesaurus in 1989. |
| mirrorstone | |
|---|---|
| USE | muscovite |
| Mirsk Poland | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Poland | |
| ...Mirsk Poland | |
| RT | Polish Sudeten Mountains |
| SN | Town near Bohemia border in Jelenia Gora Province. |
| Mirzapur India | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Uttar Pradesh India | |
| ....Mirzapur India | |
| SN | City in SE Uttar Pradesh, N central India. |
| miscellanea | |
|---|---|
| UF | incertae sedis |
| RT | paleontology |
| fossils | |
| paleobotany | |
| problematic microfossils | |
| problematic fossils | |
| taxonomy | |
| classification | |
| SN | May be used if fossil is not yet classified. |
| miscellaneous minerals | |
|---|---|
| USE | mineral inventory |
| miscibility gap | |
|---|---|
| RT | phase equilibria |
| Mishash Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Mishash Formation | |
| RT | Israel |
| Misoa Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....lower Eocene | |
| ......Misoa Formation | |
| RT | Venezuela |
| SN | NW Venezuela. Added to Thesaurus in 1989. |
| Mispec Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Mispec Group | |
| RT | New Brunswick |
| SN | S New Brunswick. Overlain by Lancaster Formation. Added to Thesaurus in 1989. |
| Missaukee County Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Lower Peninsula | |
| ...Missaukee County Michigan | |
| Missi Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Missi Group | |
| RT | Canada |
| Saskatchewan | |
| Manitoba | |
| SN | Its basal unit is normally composed of a conglomerate consisting of angular to subrounded boulders or pebbles along with minor amounts of chert, jasper and quartz. The unit grades upwards to graywacke and subgraywacke with thin beds of conglomerate. In th |
| Mission Canyon Limestone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Mississippian | |
| .....Mission Canyon Limestone | |
| RT | Idaho |
| Utah | |
| Montana | |
| North Dakota | |
| Madison Group | |
| SN | In Madison Group. Added to Thesaurus in 1985. |
| Mission Creek Fault | |
|---|---|
| BT | United States |
| .California | |
| ..Riverside County California | |
| ...Mission Creek Fault | |
| SN | S California. Added to Thesaurus in 1989. |
| Mission Valley Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....upper Eocene | |
| ......Mission Valley Formation | |
| RT | California |
| SN | S California. Added to Thesaurus in 1985. |
| Missisquoi County Quebec | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Missisquoi County Quebec | |
| Mississippi Canyon | |
|---|---|
| BT | Atlantic Ocean |
| .North Atlantic | |
| ..Gulf of Mexico | |
| ...Mississippi Canyon | |
| RT | Louisiana |
| submarine canyons | |
| SN | Submarine canyon offshore Louisiana in the N Gulf of Mexico. Added to Thesaurus in 1995. |
| Mississippi County Arkansas | |
|---|---|
| BT | United States |
| .Arkansas | |
| ..Mississippi County Arkansas | |
| Mississippi County Missouri | |
|---|---|
| BT | United States |
| .Missouri | |
| ..Mississippi County Missouri | |
| Mississippi Delta | |
|---|---|
| BT | United States |
| .Louisiana | |
| ..Mississippi Delta | |
| UF | Mississippi River delta |
| RT | Avery Island |
| Mississippi Fan | |
| East Bay | |
| Mississippi River | |
| South Pass | |
| SN | On Gulf of Mexico 100 miles SE of New Orleans. |
| Mississippi Embayment | |
|---|---|
| BT | United States |
| .Mississippi Embayment | |
| RT | Kentucky |
| Missouri | |
| Illinois | |
| Mississippi | |
| Alabama | |
| Tennessee | |
| Arkansas | |
| Gulf Coastal Plain | |
| Mississippi Valley | |
| New Madrid earthquakes 1811-1812 | |
| New Madrid region | |
| SN | A geosynclinal area including a section of the U S Gulf Coast and extending northward up the Mississippi Valley. Indexed with states as applicable. |
| Mississippi Fan | |
|---|---|
| BT | Atlantic Ocean |
| .North Atlantic | |
| ..Gulf of Mexico | |
| ...Mississippi Fan | |
| RT | Mississippi Delta |
| Sigsbee Deep | |
| DSDP Site 614 | |
| Leg 96 | |
| DSDP Site 615 | |
| DSDP Site 616 | |
| DSDP Site 617 | |
| DSDP Site 620 | |
| DSDP Site 621 | |
| DSDP Site 622 | |
| DSDP Site 623 | |
| DSDP Site 624 | |
| Mississippi River | |
| Mississippi River basin | |
| SN | In Gulf of Mexico, extending from the Mississippi Delta to Sigsbee Deep and Florida abyssal plain. Added to Thesaurus in 1989. |
| Mississippi River | |
|---|---|
| BT | United States |
| .Mississippi River | |
| RT | Louisiana |
| Iowa | |
| Kentucky | |
| Missouri | |
| Illinois | |
| Mississippi | |
| Wisconsin | |
| Minnesota | |
| Tennessee | |
| Arkansas | |
| Mississippi Delta | |
| Mississippi Fan | |
| Mississippi Valley | |
| Mississippi River basin | |
| SN | Rises in Lake Itasca in NW Minnesota and flows SE and S into the Gulf of Mexico. Indexed with states as applicable. |
| Mississippi River basin | |
|---|---|
| BT | North America |
| .Mississippi River basin | |
| RT | Canada |
| United States | |
| Mississippi Fan | |
| Mississippi River | |
| Ohio River basin | |
| SN | Drainage basin including the Ohio and Missouri river systems comprises 2/5 of the total U.S. area covering all or parts of 31 states plus S Alberta and Saskatchewan. It drains much of the interior lowlands, Great Plains, central Gulf Coastal Plain, a port |
| Mississippi River delta | |
|---|---|
| USE | Mississippi Delta |
| Mississippi River valley | |
|---|---|
| USE | Mississippi Valley |
| Mississippi Sound | |
|---|---|
| BT | United States |
| .Mississippi Sound | |
| RT | Mississippi |
| Alabama | |
| Gulf of Mexico | |
| Gulf Coastal Plain | |
| Mobile Bay | |
| Hancock County Mississippi | |
| Harrison County Mississippi | |
| Jackson County Mississippi | |
| Mobile County Alabama | |
| SN | Arm of Gulf of Mexico, off Mississippi and Alabama. Indexed with states as applicable. Added to Thesaurus in 1985. |
| Mississippi Valley | |
|---|---|
| BT | United States |
| .Mississippi Valley | |
| NT | Lower Mississippi Valley |
| Upper Mississippi Valley | |
| UF | Mississippi River valley |
| RT | Louisiana |
| Iowa | |
| Kentucky | |
| Missouri | |
| Illinois | |
| Mississippi | |
| Wisconsin | |
| Minnesota | |
| Tennessee | |
| Arkansas | |
| Midwest | |
| Mississippi Embayment | |
| Reelfoot Rift | |
| Mississippi River | |
| Southern U.S. | |
| SN | River valley. Indexed with states as applicable. |
| mississippi valley type deposits | |
|---|---|
| USE | mississippi valley-type deposits |
| mississippi valley-type deposits | |
|---|---|
| UF | mississippi valley type deposits |
| MVT-type deposits | |
| RT | lead-zinc deposits |
| zinc ores | |
| mineral deposits, genesis | |
| Gays River Deposit | |
| lead ores | |
| Pine Point mining district | |
| Mississippian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Mississippian | |
| NT | Tournaisian |
| Visean | |
| Serpukhovian | |
| Barnett Formation | |
| Bear Gulch Limestone Member | |
| Big Injun Sandstone | |
| Boone Formation | |
| Borden Group | |
| Chainman Shale | |
| Charles Formation | |
| Harrodsburg Limestone | |
| Leadville Formation | |
| Logan Formation | |
| Lower Mississippian | |
| Madison Group | |
| Middle Mississippian | |
| Mission Canyon Limestone | |
| Monte Cristo Limestone | |
| Newman Limestone | |
| Price Formation | |
| Ramp Creek Formation | |
| Rampart Group | |
| Redwall Limestone | |
| Stanley Group | |
| Sunbury Shale | |
| Upper Mississippian | |
| Valmeyeran | |
| Windsor Group | |
| RT | Pennsylvanian |
| Antler Orogeny | |
| Dinantian | |
| Chattanooga Shale | |
| Amsden Formation | |
| Arkansas Novaculite | |
| Bartlesville Sand | |
| Bedford Shale | |
| Berea Sandstone | |
| Earn Group | |
| Endicott Group | |
| Exshaw Formation | |
| Johns Valley Formation | |
| Kaskaskia Sequence | |
| Rundle Group | |
| Saint George Ba | |
| SN | After the Devonian and before the Pennsylvanian. Approximate equivalent of Lower Carboniferous of European usage. |
| Missoula County Montana | |
|---|---|
| BT | United States |
| .Montana | |
| ..Missoula County Montana | |
| RT | Selway-Bitterroot Wilderness |
| SN | W Montana. |
| Missoula Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Mesoproterozoic | |
| ....Missoula Group | |
| RT | Idaho |
| Montana | |
| Belt Supergroup | |
| Bonner Formation | |
| Empire Formation | |
| Mount Shields Formation | |
| Shepard Formation | |
| Snowslip Formation | |
| Spokane Formation | |
| SN | In Belt Supergroup. Includes numerous named formations: among these are Marsh Shale in Helena region; Striped Peak and Libby formations in NW Montana, five formations near Missoula, and others in and S of Glacier National Park. In N Idaho and NW Montana. |
| Missouri Plateau | |
|---|---|
| BT | United States |
| .Missouri Plateau | |
| RT | Montana |
| North Dakota | |
| South Dakota | |
| Great Plains | |
| SN | N Great Plains. Indexed with states as applicable. Added to Thesaurus in 1985. |
| Missouri River | |
|---|---|
| BT | United States |
| .Missouri River | |
| RT | Montana |
| Iowa | |
| Missouri | |
| Nebraska | |
| North Dakota | |
| Kansas | |
| South Dakota | |
| Missouri River basin | |
| Missouri River valley | |
| SN | Rises in S Montana and flows E and SE to join the Mississippi River N of Saint Louis. Indexed with states as applicable. |
| Missouri River basin | |
|---|---|
| BT | North America |
| .Missouri River basin | |
| RT | Alberta |
| Canada | |
| Saskatchewan | |
| United States | |
| Wyoming | |
| Montana | |
| Iowa | |
| Missouri | |
| Colorado | |
| Nebraska | |
| North Dakota | |
| Kansas | |
| South Dakota | |
| Missouri River | |
| SN | Drainage basin. Indexed with states and provinces as applicable. |
| Missouri River valley | |
|---|---|
| BT | United States |
| .Missouri River valley | |
| RT | Montana |
| Iowa | |
| Missouri | |
| Nebraska | |
| North Dakota | |
| Kansas | |
| South Dakota | |
| Missouri River | |
| SN | Indexed with states as applicable. |
| Missourian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Upper Pennsylvanian | |
| ......Missourian | |
| NT | Kansas City Group |
| Lansing Group | |
| Plattsburg Limestone | |
| Pleasanton Group | |
| Rock Lake Shale Member | |
| Seminole Formation | |
| Stanton Formation | |
| Wann Formation | |
| Wyandotte Limestone | |
| UF | Missourian Series |
| SN | Provincial series, North America: lower Upper Pennsylvanian, above Desmoinesian, below Virgilian. |
| Missourian Series | |
|---|---|
| USE | Missourian |
| Mist Mountain Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Mist Mountain Formation | |
| RT | Jurassic |
| Cretaceous | |
| Alberta | |
| British Columbia | |
| Kootenay Formation | |
| SN | In Kootenay Formation. Indexed with ages as applicable. Added to Thesaurus in 1989. |
| Mistastin Lake | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Newfoundland | |
| ...Labrador | |
| ....Mistastin Lake | |
| SN | N Labrador. |
| Mitchell County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Mitchell County Georgia | |
| SN | SW Georgia. |
| Mitchell County Iowa | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Mitchell County Iowa | |
| SN | N Iowa. |
| Mitchell County Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..Mitchell County Kansas | |
| SN | N Kansas. |
| Mitchell County North Carolina | |
|---|---|
| BT | United States |
| .North Carolina | |
| ..Mitchell County North Carolina | |
| SN | W North Carolina. |
| Mitchell County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Mitchell County Texas | |
| SN | W Texas. |
| mitigation | |
|---|---|
| RT | environmental analysis |
| environmental effects | |
| geologic hazards | |
| planning | |
| preventive measures | |
| reclamation | |
| remediation | |
| waste disposal | |
| SN | A variety of measures taken to prevent or reduce the undesirable environmental effects of human activity. May be used in a broad sense to include preventive, remedial, or reclamation measures as well as substitution of alternative measures. For geologic h |
| Mitsuishi Japan | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Japan | |
| ...Mitsuishi Japan | |
| UF | Mituisi Japan |
| RT | Honshu |
| Okayama Japan | |
| Hokkaido | |
| SN | Town in Okayama Prefecture, SW Honshu. Also town in S Hokkaido. Indexed with prefecture as applicable. |
| Mitterberg Austria | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Austria | |
| ...Salzburg State Austria | |
| ....Mitterberg Austria | |
| SN | Village in Salzburg State, W central Austria. |
| Mituisi Japan | |
|---|---|
| USE | Mitsuishi Japan |
| Miura Peninsula | |
|---|---|
| BT | nshu |
| .Miura Peninsula | |
| RT | Kazusa Group |
| Kanagawa Japan | |
| SN | SE Honshu. Extends into Sagami Sea S of Yokohama and Tokyo Bay. |
| mixed crystals | |
|---|---|
| USE | solid solution |
| mixed-layer minerals | |
|---|---|
| RT | clay minerals |
| mineral interlayer | |
| minerals | |
| SN | Before 1978, search clay minerals AND mixed-layer. |
| mixing | |
|---|---|
| RT | immiscibility |
| processes | |
| restites | |
| separation | |
| SN | Used as a general term. |
| mixite | |
|---|---|
| BT | arsenites |
| .mixite | |
| mixtite | |
|---|---|
| USE | diamictite |
| Miyagi earthquake 1978 | |
|---|---|
| BT | earthquakes |
| .Miyagi earthquake 1978 | |
| UF | Miyagi-ken-oki earthquake, 1978 |
| Miyagiken-oki earthquake, 1978 | |
| RT | Miyagi Japan |
| Honshu | |
| Japan | |
| SN | Epicenter in Miyagi, NE Honshu. Added to Thesaurus in 1989. |
| Miyagi Japan | |
|---|---|
| BT | nshu |
| .Miyagi Japan | |
| NT | Hosokura Mine |
| Oshika Peninsula | |
| Sendai Japan | |
| RT | Abukuma Mountains |
| Tohoku | |
| Miyagi earthquake 1978 | |
| Zao | |
| SN | Prefecture in N Honshu. |
| Miyagi-ken-oki earthquake, 1978 | |
|---|---|
| USE | Miyagi earthquake 1978 |
| Miyagiken-oki earthquake, 1978 | |
|---|---|
| USE | Miyagi earthquake 1978 |
| Miyake-Jima | |
|---|---|
| BT | nshu |
| .Izu-shichito | |
| ..Miyake-Jima | |
| UF | Miyaki Island |
| Miyaki-Jima Island | |
| RT | volcanoes |
| SN | Island of Izu-shichito group in Greater Tokyo, S of O-shima Island and Sagami Sea. Active volcano on island. |
| Miyaki Island | |
|---|---|
| USE | Miyake-Jima |
| Miyaki-Jima Island | |
|---|---|
| USE | Miyake-Jima |
| Miyazaki Japan | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Japan | |
| ...Kyushu | |
| ....Miyazaki Japan | |
| NT | Ebino Japan |
| RT | Kirishima |
| SN | City and prefecture in SE Kyushu. |
| Miye Japan | |
|---|---|
| USE | Mie Japan |
| Mizunami Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Miocene | |
| .....Mizunami Group | |
| RT | Honshu |
| Japan | |
| Mizunami Japan | |
| SN | Central Honshu, Japan. Added to Thesaurus in 1985. |
| Mizunami Japan | |
|---|---|
| BT | nshu |
| .Gifu Japan | |
| ..Mizunami Japan | |
| RT | Hiyoshi Japan |
| Mizunami Group | |
| SN | Town in central Honshu. |
| Mizusawa Japan | |
|---|---|
| BT | nshu |
| .Iwate Japan | |
| ..Mizusawa Japan | |
| SN | Town in N Honshu. |
| MM scale | |
|---|---|
| USE | modified Mercalli scale |
| Mn | |
|---|---|
| USE | manganese |
| Mn-53 | |
|---|---|
| BT | isotopes |
| .radioactive isotopes | |
| ..Mn-53 | |
| BT | metals |
| .manganese | |
| ..Mn-53 | |
| SN | This term has multiple hierarchies. |
| Mn-54 | |
|---|---|
| BT | isotopes |
| .radioactive isotopes | |
| ..Mn-54 | |
| BT | metals |
| .manganese | |
| ..Mn-54 | |
| SN | This term has multiple hierarchies. |
| Mo | |
|---|---|
| NT | Homo erectus |
| Homo habilis | |
| Homo sapiens | |
| USE | molybdenum |
| mo sapiens | |
|---|---|
| NT | Homo sapiens neanderthalensis |
| Homo sapiens sapiens | |
| Moab Utah | |
|---|---|
| BT | United States |
| .Utah | |
| ..Grand County Utah | |
| ...Moab Utah | |
| SN | City in E Utah. |
| Moapa Valley | |
|---|---|
| BT | United States |
| .Nevada | |
| ..Clark County Nevada | |
| ...Moapa Valley | |
| SN | NE of Las Vegas in Clark County in S Nevada. |
| Mobile Alabama | |
|---|---|
| BT | United States |
| .Alabama | |
| ..Mobile County Alabama | |
| ...Mobile Alabama | |
| SN | City on Mobile Bay in S Alabama. |
| Mobile Bay | |
|---|---|
| BT | United States |
| .Alabama | |
| ..Mobile Bay | |
| RT | Gulf of Mexico |
| Gulf Coastal Plain | |
| Mississippi Sound | |
| Tombigbee River | |
| SN | Inlet of Gulf of Mexico. Added to Thesaurus in 1985. |
| mobile belts | |
|---|---|
| UF | belts, mobile |
| RT | tectonics |
| geosynclines | |
| fold and thrust belts | |
| crust | |
| orogenic belts | |
| fold belts | |
| Mobile County Alabama | |
|---|---|
| BT | United States |
| .Alabama | |
| ..Mobile County Alabama | |
| NT | Mobile Alabama |
| RT | Mississippi Sound |
| SN | Extreme SW Alabama. |
| mobility | |
|---|---|
| RT | erosion |
| tectonics | |
| SN | Used as a general term. |
| mobilization | |
|---|---|
| RT | deformation |
| magma transport | |
| migration of elements | |
| geochemistry | |
| SN | Restricted to geochemical meaning. |
| Mocamedes | |
|---|---|
| USE | Mossamedes |
| SN | Not a valid term for GeoRef. River. Before 1993, also used for the province and city which were renamed. See Namibe Angola for the province and city. |
| Moctezuma Mexico | |
|---|---|
| BT | Mexico |
| .Sonora Mexico | |
| ..Moctezuma Mexico | |
| SN | Town in E central Sonora, NW Mexico. |
| mod |
|---|
| modal analysis | |
|---|---|
| RT | analysis |
| mineral composition | |
| geochemistry | |
| petrographic norms | |
| petrology | |
| model studies | |
|---|---|
| USE | models |
| modeling | |
|---|---|
| USE | models |
| modelling | |
|---|---|
| USE | models |
| Modelo Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Miocene | |
| .....upper Miocene | |
| ......Modelo Formation | |
| RT | California |
| SN | S California. Added to Thesaurus in 1989. |
| models | |
|---|---|
| UF | model studies |
| modeling | |
| modelling | |
| RT | CREAMS |
| GLEAMS | |
| data processing | |
| analog simulation | |
| ARC/INFO | |
| decompaction | |
| general circulation models | |
| computer animation | |
| Green-Ampt model | |
| digital terrain models | |
| digital simulation | |
| DRAINMOD | |
| four-dimensional models | |
| GENESIS model | |
| infinite models | |
| laboratory studie | |
| SN | From 1978-1992, this term was autoposted to many narrower terms. |
| Modena Italy | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Emilia-Romagna Italy | |
| ....Modena Italy | |
| SN | City and province in central Emilia-Romagna, N Italy. |
| modern | |
|---|---|
| RT | Holocene |
| SN | Used for present-day studies in conjunction with Holocene. |
| modern analogs | |
|---|---|
| UF | analogs, modern |
| analogues, modern | |
| RT | ecology |
| paleontology | |
| functional morphology | |
| morphology | |
| analog simulation | |
| models | |
| simulation | |
| paleobotany | |
| laboratory studies | |
| natural analogs | |
| systems analogs | |
| SN | Also see comparison. Added to Thesaurus in 1995. |
| MODFLOW | |
|---|---|
| RT | discharge |
| finite difference analysis | |
| ground water | |
| hydrologic cycle | |
| models | |
| MODPATH | |
| recharge | |
| simulation | |
| three-dimensional models | |
| SN | Acronym. Modular 3-d finite difference ground water flow model. Added to Thesaurus in 1995. |
| modified Mercalli scale | |
|---|---|
| UF | Mercalli scale, modified |
| MM scale | |
| RT | seismology |
| earthquakes | |
| seismic intensity | |
| magnitude | |
| Modiomorphoida | |
|---|---|
| USE | Actinodontida |
| Modoc County California | |
|---|---|
| BT | United States |
| .California | |
| ..Modoc County California | |
| RT | Clear Lake |
| SN | NE California. |
| Modoc Plateau | |
|---|---|
| BT | United States |
| .California | |
| ..Modoc Plateau | |
| SN | High, semiarid, and volcanic plateau in NE California. Also search Modoc. |
| MODPATH | |
|---|---|
| RT | computer programs |
| data processing | |
| ground water | |
| models | |
| MODFLOW | |
| simulation | |
| three-dimensional models | |
| SN | Particle tracking post-processing package for the U. S. Geological Survey's MODFLOW, Modular 3-d finite difference ground water flow model. |
| modulus of compression | |
|---|---|
| USE | compressibility |
| modulus of elasticity | |
|---|---|
| USE | elastic constants |
| modulus of incompressibility | |
|---|---|
| USE | bulk modulus |
| modulus of rigidity | |
|---|---|
| USE | shear modulus |
| modulus, bulk | |
|---|---|
| USE | bulk modulus |
| modulus, shear | |
|---|---|
| USE | shear modulus |
| Moenave Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Moenave Formation | |
| RT | Upper Triassic |
| Lower Jurassic | |
| Utah | |
| Nevada | |
| Arizona | |
| Glen Canyon Group | |
| SN | Lower Jurassic and Upper Triassic. In NE Arizona, S Utah, and Nevada. Member of Glen Canyon Group. Indexed with ages as applicable. Added to Thesaurus in 1993. |
| Moenkopi Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Triassic | |
| ....Moenkopi Formation | |
| RT | Utah |
| Colorado | |
| California | |
| Nevada | |
| Arizona | |
| SN | Lower and middle (?) Triassic or Triassic (?). In SW Utah, subdivided into (ascending) Timpoweap, Lower Red, Virgin Limestone, Middle Red, Shnabkaib, and Upper Red members. Arizona, California, Colorado, Nevada, and S Utah. |
| Moeritherioidea | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Proboscidea | |
| .......Moeritherioidea | |
| SN | Suborder. |
| Moesia | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Moesia | |
| RT | Serbia |
| Romania | |
| Bulgaria | |
| SN | Ancient region S of the lower Danube. Includes Bulgaria, SE Romania, and Serbia. Indexed with Serbia and countries as applicable. |
| Moesian Platform | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Moesian Platform | |
| RT | Romania |
| Bulgaria | |
| SN | Indexed with countries as applicable. |
| Moffat County Colorado | |
|---|---|
| BT | United States |
| .Colorado | |
| ..Moffat County Colorado | |
| RT | Dinosaur National Monument |
| Yampa River | |
| SN | Extreme NW Colorado. |
| moganite | |
|---|---|
| BT | silicates |
| .framework silicates | |
| ..silica minerals | |
| ...moganite | |
| RT | quartz |
| SN | SiOimpurities. |
| Mogilev Belarus | |
|---|---|
| BT | Europe |
| .Belarus | |
| ..Mogilev Belarus | |
| UF | Mogilev on the Dnieper |
| SN | Oblast and city on the Dnieper River. This term has multiple hierarchies. |
| Mogilev on the Dnieper | |
|---|---|
| USE | Mogilev Belarus |
| Mogilno Poland | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Poland | |
| ...Bydgoszcz Poland | |
| ....Mogilno Poland | |
| SN | Town in Bydgoszcz, NW central Poland. |
| Mogollon Mountains | |
|---|---|
| BT | United States |
| .New Mexico | |
| ..Catron County New Mexico | |
| ...Mogollon Mountains | |
| RT | Datil-Mogollon volcanic field |
| Mogollon Plateau | |
| Mogollon Rim | |
| SN | SW New Mexico. Added to Thesaurus in 1981. |
| Mogollon Plateau | |
|---|---|
| BT | United States |
| .Arizona | |
| ..Mogollon Plateau | |
| RT | Mogollon Mountains |
| Mogollon Rim | |
| SN | Tableland S of Winslow in E central Arizona. |
| Mogollon Rim | |
|---|---|
| BT | United States |
| .Arizona | |
| ..Mogollon Rim | |
| RT | Mogollon Mountains |
| Mogollon Plateau | |
| SN | S escarpment of Mogollon Plateau. Added to Thesaurus in 1981. |
| Mogollon-Datil volcanic field | |
|---|---|
| USE | Datil-Mogollon volcanic field |
| Mohave County Arizona | |
|---|---|
| BT | United States |
| .Arizona | |
| ..Mohave County Arizona | |
| RT | Black Mountains |
| Lake Mead | |
| Grand Canyon | |
| Mohave Mountains | |
| SN | NW Arizona. |
| Mohave Desert | |
|---|---|
| USE | Mojave Desert |
| Mohave Mountains | |
|---|---|
| BT | United States |
| .Mohave Mountains | |
| UF | Mojave Mountains |
| RT | California |
| Arizona | |
| San Bernardino County California | |
| Mohave County Arizona | |
| SN | W Arizona and SE California. Indexed with states and counties as applicable. Added to Thesaurus in 1985. |
| Mohawk River valley | |
|---|---|
| USE | Mohawk Valley |
| Mohawk Valley | |
|---|---|
| UF | Mohawk River valley |
| RT | New York |
| California | |
| Appalachian Plateau | |
| Feather River | |
| SN | River valley in E central New York. Also used for part of middle fork of the Feather River, NE California. May be used in other location. Indexed with states if applicable. |
| Mohnian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Miocene | |
| .....Mohnian | |
| RT | middle Miocene |
| upper Miocene | |
| SN | North America. Miocene, above Luisian and below Delmontian. Added to Thesaurus in 1985. |
| Mohns Ridge | |
|---|---|
| BT | Arctic Ocean |
| .Norwegian Sea | |
| ..Mohns Ridge | |
| SN | NE of Jan Mayen, Norwegian Sea. Added to Thesaurus in 1981. |
| Moho | |
|---|---|
| USE | Mohorovicic discontinuity |
| Mohoro |
|---|
| Moine thrust zone | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....Scotland | |
| .....Moine thrust zone | |
| SN | Added to Thesaurus in 1989. |
| Moinian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Neoproterozoic | |
| ....Moinian | |
| SN | Europe. |
| moissanite | |
|---|---|
| BT | alloys |
| .carbides | |
| ..moissanite | |
| RT | carborundum |
| meteorites | |
| carbon | |
| silicides | |
| silicon | |
| SN | Meteorite mineral. |
| moisture | |
|---|---|
| UF | moisture content |
| RT | wettability |
| soils | |
| water | |
| atmospheric precipitation | |
| water regimes | |
| desiccation | |
| water vapor | |
| humidity | |
| water content | |
| moisture content | |
|---|---|
| USE | moisture |
| Mojave Desert | |
|---|---|
| BT | United States |
| .California | |
| ..Mojave Desert | |
| UF | Mohave Desert |
| RT | Antelope Valley |
| Aztec Sandstone | |
| Kern County California | |
| Big Bear earthquake 1992 | |
| Joshua Tree earthquake 1992 | |
| Landers earthquake 1992 | |
| Cady Mountains | |
| Cajon Pass | |
| Calico Mountains | |
| Los Angeles County California | |
| Coyote Lake | |
| Hector Formation | |
| Old Woman Mountains | |
| R | |
| SN | Arid basin in S California. Also search Mojave. |
| Mojave Mountains | |
|---|---|
| USE | Mohave Mountains |
| Mokoia New Zealand | |
|---|---|
| BT | Australasia |
| .New Zealand | |
| ..Taranaki New Zealand | |
| ...Mokoia New Zealand | |
| RT | North Island |
| SN | Village in SW North Island. Also index North Island. |
| molasse | |
|---|---|
| BT | sedimentary rocks |
| .clastic rocks | |
| ..molasse | |
| RT | terrigenous materials |
| Molasse Basin | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Molasse Basin | |
| NT | Swiss Molasse Basin |
| RT | Switzerland |
| Austria | |
| Germany | |
| SN | A geologic-geographic term which refers to the feature in Europe. Also search molasse in combination with country name. Indexed with countries as applicable. |
| Moldanubian | |
|---|---|
| UF | Moldanubicum |
| Moldanubicum Complex | |
| Moldanubikum | |
| RT | Precambrian |
| Archean | |
| Paleozoic | |
| Austria | |
| Germany | |
| Slovakia | |
| Czech Republic | |
| SN | Indexed with age as applicable. |
| Moldanubicum | |
|---|---|
| USE | Moldanubian |
| Moldanubicum Complex | |
|---|---|
| USE | Moldanubian |
| Moldanubikum | |
|---|---|
| USE | Moldanubian |
| Moldava Valley | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Romania | |
| ...Moldava Valley | |
| BT | Europe |
| .Moldavia | |
| ..Moldava Valley | |
| UF | Moldova Valley |
| SN | River valley. Also search Moldava River. This term has multiple hierarchies. |
| Moldavia | |
|---|---|
| BT | Europe |
| .Moldavia | |
| NT | Bacau Romania |
| Bicaz Valley | |
| Bistrita Valley | |
| Gutii Mountains | |
| Iacobeni Romania | |
| Moldava Valley | |
| Moldavian Platform | |
| Piatra-Neamt Romania | |
| Suceava Romania | |
| Teleajen Valley | |
| Trotus Valley | |
| RT | Romania |
| Russian Platform | |
| Russian Plain | |
| Moldova | |
| Dniester River | |
| Dniester-Prut Interfluve | |
| Prut River | |
| Rarau Massif | |
| Romanian Plain | |
| Siret River | |
| Tiraspol Moldova | |
| SN | Region E of Transylvania and N of E Walachia in Romania, and the republic of Moldova, the former Moldavian Soviet Socialist Republic. Indexed with countries as applicable. |
| Moldavian Plateau | |
|---|---|
| USE | Moldavian Platform |
| Moldavian Platform | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Romania | |
| ...Moldavian Platform | |
| BT | Europe |
| .Moldavia | |
| ..Moldavian Platform | |
| UF | Moldavian Plateau |
| RT | Siret River |
| SN | This term has multiple hierarchies. |
| moldavite | |
|---|---|
| BT | tektites |
| .moldavite | |
| Moldova | |
|---|---|
| BT | Europe |
| .Moldova | |
| BT | Commonwealth of Independent States |
| .Moldova | |
| NT | Tiraspol Moldova |
| RT | Moldavia |
| Russian Plain | |
| Black Sea region | |
| Dniester River | |
| Dniester-Prut Interfluve | |
| Prut River | |
| SN | Republic. Former Moldavian Soviet Socialist Republic. Before 1993, also search Bessarabia if applicable; also search Moldavia AND USSR. This term has multiple hierarchies. Added to Thesaurus in 1993. |
| Moldova Noua Romania | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Romania | |
| ...Moldova Noua Romania | |
| BT | Europe |
| .Southern Europe | |
| ..Banat | |
| ...Moldova Noua Romania | |
| UF | Moldova-Noua Romania |
| SN | Town in SW near the Serbian border in Caras-Severin County. This term has multiple hierarchies. |
| Moldova Valley | |
|---|---|
| USE | Moldava Valley |
| Moldova-Noua Romania | |
|---|---|
| USE | Moldova Noua Romania |
| molecular biology | |
|---|---|
| RT | biochemistry |
| biologic evolution | |
| biology | |
| DNA | |
| life origin | |
| molecular structure | |
| paleontology | |
| phylogeny | |
| RNA | |
| molecular fossils | |
|---|---|
| USE | biomarkers |
| molecular structure | |
|---|---|
| RT | crystal structure |
| molecular biology | |
| Molise Italy | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Molise Italy | |
| NT | Campobasso Italy |
| SN | Autonomous region on the Adriatic Sea. |
| mollisol | |
|---|---|
| USE | active layer |
| Mollisols | |
|---|---|
| BT | soils |
| .Mollisols | |
| RT | soil group |
| Mollusca | |
|---|---|
| BT | Invertebrata |
| .Mollusca | |
| NT | Aplacophora |
| Bivalvia | |
| Cephalopoda | |
| Gastropoda | |
| Hyolithes | |
| Monoplacophora | |
| Polyplacophora | |
| Rostroconchia | |
| Scaphopoda | |
| Tentaculitida | |
| RT | reef builders |
| pearls | |
| Dacryoconarida | |
| Molodezhnaya Station | |
|---|---|
| BT | Antarctica |
| .Molodezhnaya Station | |
| SN | USSR station on Alasheyev Bight in Enderby Land between Lutzow-Holm Bay and Cape Ann on the Indian Ocean side. Also search Molodezhnaya. |
| Molokai | |
|---|---|
| BT | United States |
| .Hawaii | |
| ..Molokai | |
| RT | Maui County Hawaii |
| Mauna Loa | |
| SN | Island in Hawaii between Oahu and Maui. This term has multiple hierarchies. Indexed with Maui County Hawaii or Kalawao County Hawaii as applicable. |
| Molotov Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Perm Russian Federation | |
| ...Molotov Russian Federation | |
| SN | City W of the Urals in Perm Oblast. Before 1993, Molotov Russian Republic was also used. This term has multiple hierarchies. |
| Molteno South Africa | |
|---|---|
| BT | Africa |
| .Southern Africa | |
| ..South Africa | |
| ...Eastern Cape Province South Africa | |
| ....Molteno South Africa | |
| RT | Cape Province region |
| SN | Town in Eastern Cape Province, S South Africa. |
| Moluccas | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Indonesia | |
| ...Moluccas | |
| UF | Spice Islands |
| SN | Group of islands between Celebes and New Guinea. |
| Moluya River | |
|---|---|
| USE | Moulouya River |
| molybdates | |
|---|---|
| NT | ferrimolybdite |
| powellite | |
| umohoite | |
| wulfenite | |
| RT | minerals |
| tungstates | |
| molybdenite | |
|---|---|
| BT | sulfides |
| .molybdenite | |
| RT | molybdenum ores |
| molybdenum | |
| molybdenite porphyry | |
|---|---|
| USE | porphyry molybdenum |
| molybdenum | |
|---|---|
| BT | metals |
| .molybdenum | |
| UF | Mo |
| RT | molybdenum ores |
| molybdenite | |
| porphyry molybdenum | |
| SN | Chemical element. Use molybdenum ores for molybdenum as a commodity. |
| molybdenum ores | |
|---|---|
| BT | metal ores |
| .molybdenum ores | |
| RT | Henderson Mine |
| Climax Mine | |
| Colorado mineral belt | |
| molybdenite | |
| molybdenum | |
| porphyry molybdenum | |
| Questa Mine | |
| SN | Commodity. See List C. |
| moment tensors | |
|---|---|
| UF | seismic moment tensors |
| RT | seismology |
| seismic moment | |
| SN | Added to Thesaurus in 1998. |
| Momipites | |
|---|---|
| BT | palynomorphs |
| .miospores | |
| ..Momipites | |
| RT | microfossils |
| SN | Indexed with microfossils if applicable. |
| Monaco | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..Monaco | |
| SN | On the Mediterranean Sea near the French-Italian border. |
| Monagas Venezuela | |
|---|---|
| BT | South America |
| .Venezuela | |
| ..Monagas Venezuela | |
| RT | Orinoco River |
| San Juan River | |
| SN | State in NE Venezuela. |
| Monashee Complex | |
|---|---|
| RT | British Columbia |
| lower Mesozoic | |
| Shuswap Complex | |
| upper Paleozoic | |
| SN | In Shuswap Complex of SE British Columbia. Indexed with ages as applicable. Added to Thesaurus in 1989. |
| monazite | |
|---|---|
| BT | phosphates |
| .monazite | |
| RT | heavy minerals |
| monazite deposits | |
| SN | As of 1981, use monazite deposits for monazite as a commodity. |
| monazite deposits | |
|---|---|
| RT | cerium ores |
| heavy mineral deposits | |
| monazite | |
| placers | |
| rare earth deposits | |
| thorium ores | |
| SN | Commodity. See List C. |
| Monchegorsk Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Murmansk Russian Federation | |
| ...Monchegorsk Russian Federation | |
| SN | City in Murmansk Oblast about 70 miles S of Murmansk in extreme NW European Russian Federation. Before 1993, Monchegorsk Russian Republic was also used. This term has multiple hierarchies. |
| monchiquite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..lamprophyres | |
| ...monchiquite | |
| Moncton Basin | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Maritime Provinces | |
| ...New Brunswick | |
| ....Moncton Basin | |
| UF | Moncton Subbasin |
| SN | Carboniferous structural basin in New Brunswick. Added to Thesaurus in 1989. |
| Moncton Subbasin | |
|---|---|
| USE | Moncton Basin |
| Monera | |
|---|---|
| USE | prokaryotes |
| Moneron Island | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Moneron Island | |
| BT | Asia |
| .Moneron Island | |
| RT | Sakhalin |
| SN | Russian island in Japan Sea 30 miles off SW Sakhalin. This term has multiple hierarchies. |
| monetite | |
|---|---|
| BT | phosphates |
| .monetite | |
| Monghyr India | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Bihar India | |
| ....Monghyr India | |
| SN | City in NE central Bihar, E India. |
| Mongolian Altai | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Mongolia | |
| ...Mongolian Altai | |
| BT | Asia |
| .Altai Mountains | |
| ..Mongolian Altai | |
| SN | Southeastern extension of the Altai Mountains. This term has multiple hierarchies. |
| Moniteau County Missouri | |
|---|---|
| BT | United States |
| .Missouri | |
| ..Moniteau County Missouri | |
| monitoring | |
|---|---|
| RT | baseline studies |
| environmental geology | |
| geophysical surveys | |
| hydrogeology | |
| networks | |
| observation wells | |
| pollution | |
| quality control | |
| water wells | |
| monitoring wells | |
|---|---|
| SN | Not a valid term for GeoRef. See observation wells or monitoring. |
| Monmouth County New Jersey | |
|---|---|
| BT | United States |
| .New Jersey | |
| ..Monmouth County New Jersey | |
| RT | Raritan Bay |
| Sandy Hook | |
| SN | On the Atlantic Ocean in E New Jersey. |
| Monmouth Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Monmouth Group | |
| RT | Maryland |
| Delaware | |
| New Jersey | |
| Navesink Formation | |
| SN | Includes (ascending) Mount Laurel, Navesink, Red Bank, and Tinton formations. Delaware, NE Maryland, and New Jersey. |
| Monmouthshire Wales | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....Wales | |
| .....Monmouthshire Wales | |
| SN | Former county in SE Wales. As of April 1974, part of Gwent. Before 1993, also search Monmouth and Great Britain. |
| Mono Basin | |
|---|---|
| BT | United States |
| .California | |
| ..Mono County California | |
| ...Mono Basin | |
| SN | Mono County in E California. |
| Mono County California | |
|---|---|
| BT | United States |
| .California | |
| ..Mono County California | |
| NT | Inyo Domes |
| Long Valley Caldera | |
| Mono Basin | |
| Mono Craters | |
| Mono Lake | |
| Obsidian Dome | |
| RT | Casa Diablo |
| White Mountains | |
| Long Valley | |
| Mammoth Lakes earthquakes | |
| Mammoth Mountain | |
| SN | E California. |
| Mono Craters | |
|---|---|
| BT | United States |
| .California | |
| ..Mono County California | |
| ...Mono Craters | |
| RT | volcanoes |
| SN | Range of about 20 geologically recent volcanic cones just S of Mono Lake, Mono County in E California. |
| Mono Lake | |
|---|---|
| BT | United States |
| .California | |
| ..Mono County California | |
| ...Mono Lake | |
| SN | In central Mono County in E California. |
| monoclines | |
|---|---|
| BT | folds |
| .monoclines | |
| RT | flexure folds |
| SN | Not valid term from 1975-1977. Before 1978, also search folds AND monoclinal. |
| monoclinic system | |
|---|---|
| BT | crystal systems |
| .monoclinic system | |
| RT | crystallography |
| SN | Before 1978, search monoclinic. |
| Monocotyledoneae | |
|---|---|
| BT | Plantae |
| .Spermatophyta | |
| ..Angiospermae | |
| ...Monocotyledoneae | |
| NT | Alismidae |
| Arecidae | |
| Commelinidae | |
| Cyperaceae | |
| Gramineae | |
| Liliidae | |
| Palmae | |
| RT | Dicotyledoneae |
| monographs | |
|---|---|
| UF | books |
| RT | catalogs |
| dictionaries | |
| glossaries | |
| lexicons | |
| bibliography | |
| guidebook | |
| publications | |
| book reviews | |
| textbooks | |
| directory | |
| manuals | |
| theses | |
| SN | Added to Thesaurus in 1982. |
| Monograptina | |
|---|---|
| BT | Graptolithina |
| .Graptoloidea | |
| ..Monograptina | |
| NT | Monograptus |
| RT | Invertebrata |
| Hemichordata | |
| SN | Indexed with Hemichordata or Invertebrata as applicable. |
| Monograptus | |
|---|---|
| BT | Graptolithina |
| .Graptoloidea | |
| ..Monograptina | |
| ...Monograptus | |
| NT | Monograptus uniformis |
| RT | Invertebrata |
| Hemichordata | |
| SN | Genus. Indexed with Hemichordata or Invertebrata as applicable. |
| Monograptus uniformi |
|---|
| Monograptus uniformis | |
|---|---|
| BT | Graptolithina |
| .Graptoloidea | |
| ..Monograptina | |
| ...Monograptus | |
| ....Monograptus uniformis | |
| RT | Invertebrata |
| Hemichordata | |
| SN | Indexed with Hemichordata or Invertebrata as applicable. |
| monohydrocalcite | |
|---|---|
| BT | carbonates |
| .monohydrocalcite | |
| monolete taxa | |
|---|---|
| UF | monoletes |
| RT | palynomorphs |
| miospores | |
| monoletes | |
|---|---|
| USE | monolete taxa |
| Monomoy Island | |
|---|---|
| BT | United States |
| .Massachusetts | |
| ..Barnstable County Massachusetts | |
| ...Cape Cod | |
| ....Monomoy Island | |
| SN | A 10 mile sandspit S of Chantham on Cape Cod. Sometimes it is connected to land and is not an island. |
| Monona County Iowa | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Monona County Iowa | |
| Monongahela Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Monongahela Group | |
| RT | Virginia |
| Ohio | |
| Pennsylvania | |
| Maryland | |
| West Virginia | |
| Pittsburgh Coal | |
| SN | In Pennsylvania, contains Pittsburgh Coal Seam at base; top of Waynesburg Coal marks upper boundary. W Maryland, E Ohio, W Pennsylvania, W Virginia, and West Virginia. |
| Monongalia County West Virginia | |
|---|---|
| BT | United States |
| .West Virginia | |
| ..Monongalia County West Virginia | |
| SN | N West Virginia. |
| Monoplacophora | |
|---|---|
| BT | Invertebrata |
| .Mollusca | |
| ..Monoplacophora | |
| Monotis | |
|---|---|
| BT | Invertebrata |
| .Mollusca | |
| ..Bivalvia | |
| ...Pteriina | |
| ....Pectinacea | |
| .....Monotis | |
| SN | Genus. |
| Monotremata | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Monotremata | |
| SN | Order. |
| Monroe County Alabama | |
|---|---|
| BT | United States |
| .Alabama | |
| ..Monroe County Alabama | |
| SN | SW Alabama. |
| Monroe County Arkansas | |
|---|---|
| BT | United States |
| .Arkansas | |
| ..Monroe County Arkansas | |
| SN | E central Arkansas. |
| Monroe County Florida | |
|---|---|
| BT | United States |
| .Florida | |
| ..Monroe County Florida | |
| NT | Big Pine Key |
| Dry Tortugas | |
| Key Largo | |
| RT | Florida Keys |
| Cape Sable | |
| SN | S Florida. |
| Monroe County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Monroe County Georgia | |
| SN | Central Georgia. |
| Monroe County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Monroe County Illinois | |
| NT | Columbia Illinois |
| SN | SW Illinois. |
| Monroe County Indiana | |
|---|---|
| BT | Indiana |
| .Monroe County Indiana | |
| SN | S central Indiana. |
| Monroe County Iowa | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Monroe County Iowa | |
| SN | S Iowa. |
| Monroe County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Monroe County Kentucky | |
| SN | S Kentucky. |
| Monroe County Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Lower Peninsula | |
| ...Monroe County Michigan | |
| SN | Extreme SE Michigan. |
| Monroe County Mississippi | |
|---|---|
| BT | United States |
| .Mississippi | |
| ..Monroe County Mississippi | |
| SN | E Mississippi. |
| Monroe County Missouri | |
|---|---|
| BT | United States |
| .Missouri | |
| ..Monroe County Missouri | |
| SN | NE central Missouri. |
| Monroe County New York | |
|---|---|
| BT | United States |
| .New York | |
| ..Monroe County New York | |
| NT | Rochester New York |
| RT | Genesee River |
| SN | W New York. |
| Monroe County Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Monroe County Ohio | |
| SN | E Ohio. |
| Monroe County Pennsylvania | |
|---|---|
| BT | United States |
| .Pennsylvania | |
| ..Monroe County Pennsylvania | |
| SN | E Pennsylvania. |
| Monroe County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Monroe County Tennessee | |
| SN | SE Tennessee. |
| Monroe County West Virginia | |
|---|---|
| BT | United States |
| .West Virginia | |
| ..Monroe County West Virginia | |
| SN | SE West Virginia. |
| Monroe County Wisconsin | |
|---|---|
| BT | United States |
| .Wisconsin | |
| ..Monroe County Wisconsin | |
| SN | W central Wisconsin. |
| Mons Basin | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..Belgium | |
| ...Mons Basin | |
| RT | Hainaut Belgium |
| SN | Coal mining area near the French border. Also search Mons. Indexed with province as applicable. |
| monsoons | |
|---|---|
| RT | hurricanes |
| storms | |
| Mont Blanc | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Haute-Savoie France | |
| ....Savoy Alps | |
| .....Mont Blanc | |
| RT | Argentiere Glacier |
| Valle d'Aosta Italy | |
| SN | In Savoy Alps near Italian border. Highest mountain in Alps. This term has multiple hierarchies. |
| Mont Dore France | |
|---|---|
| USE | Mont-Dore France |
| Mont Pelee | |
|---|---|
| USE | Mount Pelee |
| Mont-Dore France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Puy-de-Dome France | |
| ....Mont-Dore France | |
| UF | Le Mont-Dore France |
| Mont Dore France | |
| Mont-Dore-les-Bains France | |
| SN | Town and thermal station in SE Puy-de-Dome, S central France. |
| Mont-Dore-les-Bains France | |
|---|---|
| USE | Mont-Dore France |
| Mont-Saint-Michel Bay | |
|---|---|
| USE | Bay of Saint-Michel |
| Montagne Noire | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Central Massif | |
| ....Montagne Noire | |
| RT | Aude France |
| Tarn France | |
| SN | Southernmost range of Central Massif. Indexed with departments as applicable. |
| Montague County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Montague County Texas | |
| Montague Island | |
|---|---|
| RT | Alaska |
| Prince William Sound | |
| Southern Alaska | |
| SN | At entrance of Prince William Sound, SE of Anchorage in S Alaska. Also occurs in Gulf of Mexico and off New South Wales, Australia. Indexed with Southern Alaska or other regions as applicable. |
| Montana Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Montana Group | |
| RT | New Mexico |
| Utah | |
| Wyoming | |
| Montana | |
| Colorado | |
| North Dakota | |
| Bearpaw Formation | |
| Kansas | |
| South Dakota | |
| Cody Shale | |
| Eagle Sandstone | |
| Fox Hills Formation | |
| Pierre Shale | |
| Judith River Formation | |
| Parkman Sandstone | |
| Two Medicine Formation | |
| SN | Includes Bearpaw Shale, Claggett Shale, Cody Shale (upper part), Eagle Sandstone, Fox Hills Sandstone, Horsethief Sandstone, Judith River Formation, Lennep Sandstone, Parkman Sandstone, Pierre Shale, Trinidad Sandstone, Two Medicine Formation, and Virgell |
| Montana Lineament | |
|---|---|
| USE | Lewis and Clark Lineament |
| montane environment | |
|---|---|
| USE | subalpine environment |
| Montastrea | |
|---|---|
| BT | Invertebrata |
| .Coelenterata | |
| ..Anthozoa | |
| ...Zoantharia | |
| ....Scleractinia | |
| .....Montastrea | |
| NT | Montastrea annularis |
| SN | Genus. |
| Montastrea annularis | |
|---|---|
| BT | Invertebrata |
| .Coelenterata | |
| ..Anthozoa | |
| ...Zoantharia | |
| ....Scleractinia | |
| .....Montastrea | |
| ......Montastrea annularis | |
| SN | Species. |
| Montauban Meteorite | |
|---|---|
| USE | Orgueil Meteorite |
| Montcalm County Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Lower Peninsula | |
| ...Montcalm County Michigan | |
| Montcalm County Quebec | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Montcalm County Quebec | |
| Monte Amiata | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Apennines | |
| ....Monte Amiata | |
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Tuscany Italy | |
| ....Monte Amiata | |
| UF | Mount Amiata |
| Mt. Amiata | |
| RT | volcanoes |
| SN | Extinct volcano in the Apennines. This term has multiple hierarchies. |
| Monte Antola | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Apennines | |
| ....Ligurian Apennines | |
| .....Monte Antola | |
| SN | Peak in Ligurian Apennines in NW Italy. This term has multiple hierarchies. |
| Monte Baldo | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Veneto Italy | |
| ....Monte Baldo | |
| SN | Mountain range between Lake Garda and Adige River in NE Italy. |
| Monte Capanne | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Tuscany Italy | |
| ....Monte Capanne | |
| RT | Elba |
| SN | W end of island of Elba in Mediterranean Sea off Tuscany. Indexed with Elba. |
| Monte Carlo analysis | |
|---|---|
| BT | statistical analysis |
| .Monte Carlo analysis | |
| UF | Monte Carlo methods |
| RT | mathematical geology |
| geostatistics | |
| SN | Statistical method. Before 1985, also search Monte Carlo (truncated) AND statistical analysis. Added to Thesaurus in 1985. |
| Monte Carlo methods | |
|---|---|
| USE | Monte Carlo analysis |
| Monte Cristo Limestone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Mississippian | |
| .....Monte Cristo Limestone | |
| RT | California |
| Nevada | |
| SN | Lower and Upper Mississippian. Consists of (ascending) Dawn Limestone, Anchor Limestone, Bullion Limestone, and Yellowpine Limestone members. SE California and SE Nevada. Indexed with states as applicable. |
| Monte Gargano | |
|---|---|
| USE | Gargano |
| Monte Pisano | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Tuscany Italy | |
| ....Monte Pisano | |
| SN | Mountain group near Pisa in NW Italy. |
| Monte Rosa | |
|---|---|
| RT | Pennine Alps |
| Piemonte Italy | |
| Valais Switzerland | |
| SN | Highest mountain group in the Pennine Alps. Indexed with countries and Pennine Alps as applicable. |
| Monte Somma | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Campania Italy | |
| ....Monte Somma | |
| RT | Vesuvius |
| SN | Semicircular ridge on N and E sides of Vesuvius in E Italy. |
| Monte Vulture | |
|---|---|
| USE | Vulture Mountain |
| Monteagle Limestone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Mississippian | |
| .....Upper Mississippian | |
| ......Monteagle Limestone | |
| RT | Alabama |
| Tennessee | |
| montebrasite | |
|---|---|
| BT | phosphates |
| .montebrasite | |
| RT | amblygonite |
| Montenegro | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Yugoslavia | |
| ...Montenegro | |
| NT | Niksic Yugoslavia |
| RT | Adriatic region |
| Dalmatia | |
| Alps | |
| Balkan Peninsula | |
| Montenegro earthquake 1979 | |
| SN | Since 1991, associated with Serbia in modern Federal Republic of Yugoslavia. Before 1995, used as republic of E and NE former Yugoslavia. Also search Crna Gora. |
| Montenegro earthquake 1979 | |
|---|---|
| BT | earthquakes |
| .Montenegro earthquake 1979 | |
| RT | Albania |
| Montenegro | |
| Yugoslavia | |
| SN | Montenegro-Albania region. Added to Thesaurus in 1993. |
| Monteregian Hills | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Monteregian Hills | |
| RT | Saint Lawrence Lowlands |
| SN | Located in the Saint Lawrence Lowlands of Quebec. Composed of alkalic igneous intrusive rocks of Upper Jurassic to Lower Cretaceous age. Added to Thesaurus in 1989. |
| Monterey Bay | |
|---|---|
| BT | United States |
| .California | |
| ..Monterey Bay | |
| RT | Monterey County California |
| Santa Cruz California | |
| Santa Cruz County California | |
| SN | Inlet of Pacific Ocean in Santa Cruz and Monterey counties. |
| Monterey California | |
|---|---|
| BT | United States |
| .California | |
| ..Monterey County California | |
| ...Monterey California | |
| SN | City on the Pacific Ocean in W California. |
| Monterey Canyon | |
|---|---|
| BT | Pacific Ocean |
| .North Pacific | |
| ..Northeast Pacific | |
| ...Monterey Canyon | |
| UF | Monterey Deep-Sea Channel |
| Monterey Submarine Canyon | |
| Monterey Trough | |
| RT | submarine canyons |
| SN | Submarine canyon just off coast of central California. This term has multiple hierarchies. |
| Monterey County California | |
|---|---|
| BT | United States |
| .California | |
| ..Monterey County California | |
| NT | Carmel Bay |
| Carmel California | |
| Del Monte Beach | |
| Monterey California | |
| Parkfield California | |
| Salinas California | |
| RT | Santa Lucia Range |
| Monterey Bay | |
| Salinas Valley | |
| SN | On the Pacific Ocean and Monterey Bay in W California. |
| Monterey Deep-Sea Channel | |
|---|---|
| USE | Monterey Canyon |
| Monterey Deep-Sea Fan | |
|---|---|
| USE | Monterey Fan |
| Monterey Fan | |
|---|---|
| BT | Pacific Ocean |
| .North Pacific | |
| ..Monterey Fan | |
| BT | Pacific Ocean |
| .North Pacific | |
| ..Northeast Pacific | |
| ...Monterey Fan | |
| UF | Monterey Deep-Sea Fan |
| SN | Off coast of central California just to the W of the Monterey Canyon. This term has multiple hierarchies. |
| Monterey Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Miocene | |
| .....Monterey Formation | |
| RT | California |
| SN | Middle and upper Miocene. Comprises (ascending) Gould Shale, Devilwater Silt, McDonald Shale, Antelope Shale, and Chico-Martinez Chert members. W California. |
| Monterey Submarine Canyon | |
|---|---|
| USE | Monterey Canyon |
| Monterey Trough | |
|---|---|
| USE | Monterey Canyon |
| Montes de Toledo | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Iberian Peninsula | |
| ...Spain | |
| ....Montes de Toledo | |
| RT | Ciudad Real Spain |
| Toledo Spain | |
| SN | Mountain range in S central Spain. Indexed with provinces as applicable. |
| Montesano Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Miocene | |
| .....upper Miocene | |
| ......Montesano Formation | |
| RT | Washington |
| SN | Largely massive coarse-grained light-brown sandstones, with many intercalated lenses of conglomerate and grit; shales subordinate in lower part but common in upper part. SW and NW Washington. |
| Montevideo Uruguay | |
|---|---|
| BT | South America |
| .Uruguay | |
| ..Montevideo Uruguay | |
| SN | Department in S Uruguay. Also a city on the Rio de la Plata. |
| Montezuma County Colorado | |
|---|---|
| BT | United States |
| .Colorado | |
| ..Montezuma County Colorado | |
| NT | Cortez Colorado |
| SN | SW Colorado. |
| Montgomery County Alabama | |
|---|---|
| BT | United States |
| .Alabama | |
| ..Montgomery County Alabama | |
| SN | SE central Alabama. |
| Montgomery County Arkansas | |
|---|---|
| BT | United States |
| .Arkansas | |
| ..Montgomery County Arkansas | |
| SN | W Arkansas. |
| Montgomery County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Montgomery County Georgia | |
| SN | E central Georgia. |
| Montgomery County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Montgomery County Illinois | |
| SN | S central Illinois. |
| Montgomery County Indiana | |
|---|---|
| BT | Indiana |
| .Montgomery County Indiana | |
| SN | W central Indiana. |
| Montgomery County Iowa | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Montgomery County Iowa | |
| SN | SW Iowa. |
| Montgomery County Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..Montgomery County Kansas | |
| SN | SE Kansas. |
| Montgomery County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Montgomery County Kentucky | |
| SN | NE central Kentucky. |
| Montgomery County Maryland | |
|---|---|
| BT | United States |
| .Maryland | |
| ..Montgomery County Maryland | |
| RT | Rock Creek Park |
| SN | Central Maryland. |
| Montgomery County Mississippi | |
|---|---|
| BT | United States |
| .Mississippi | |
| ..Montgomery County Mississippi | |
| SN | Central Mississippi. |
| Montgomery County Missouri | |
|---|---|
| BT | United States |
| .Missouri | |
| ..Montgomery County Missouri | |
| SN | E central Missouri. |
| Montgomery County New York | |
|---|---|
| BT | United States |
| .New York | |
| ..Montgomery County New York | |
| SN | E central New York. |
| Montgomery County North Carolina | |
|---|---|
| BT | United States |
| .North Carolina | |
| ..Montgomery County North Carolina | |
| SN | Central North Carolina. |
| Montgomery County Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Montgomery County Ohio | |
| SN | W Ohio. |
| Montgomery County Pennsylvania | |
|---|---|
| BT | United States |
| .Pennsylvania | |
| ..Montgomery County Pennsylvania | |
| SN | SE Pennsylvania. |
| Montgomery County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Montgomery County Tennessee | |
| SN | N Tennessee. |
| Montgomery County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Montgomery County Texas | |
| SN | E Texas. |
| Montgomery County Virginia | |
|---|---|
| BT | United States |
| .Virginia | |
| ..Montgomery County Virginia | |
| NT | Blacksburg Virginia |
| SN | SW Virginia. Also search Radford Virginia if applicable. |
| Monti Berici | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Veneto Italy | |
| ....Monti Berici | |
| SN | Range of volcanic hills SW of Vicenza in NE Italy. |
| Monti Caronie | |
|---|---|
| USE | Nebrodi Mountains |
| Monti Lessini | |
|---|---|
| USE | Lessini Mountains |
| Montian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Paleocene | |
| .....Montian | |
| SN | Europe. Above Danian, below Thanetian. |
| monticellite | |
|---|---|
| BT | silicates |
| .orthosilicates | |
| ..nesosilicates | |
| ...olivine group | |
| ....monticellite | |
| Monticello Iowa | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Jones County Iowa | |
| ...Monticello Iowa | |
| SN | City on Maquoketa River in E Iowa. |
| Monticello Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Wayne County Kentucky | |
| ...Monticello Kentucky | |
| SN | Town in S Kentucky. |
| Monticello Minnesota | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Wright County Minnesota | |
| ...Monticello Minnesota | |
| SN | Village on Mississippi River in S central Minnesota. |
| Monticello New York | |
|---|---|
| BT | United States |
| .New York | |
| ..Sullivan County New York | |
| ...Monticello New York | |
| SN | Resort village in SE New York. |
| Monticello Reservoir | |
|---|---|
| BT | United States |
| .Monticello Reservoir | |
| RT | South Carolina |
| Utah | |
| San Juan County Utah | |
| Fairfield County South Carolina | |
| SN | Located in Fairfield County, N central South Carolina. Also in San Juan County, SE Utah. Search in conjunction with respective state. Indexed with states and counties as applicable. Added to Thesaurus in 1989. |
| Monticello Utah | |
|---|---|
| BT | United States |
| .Utah | |
| ..San Juan County Utah | |
| ...Monticello Utah | |
| SN | Town in SE Utah. |
| Monticello Wisconsin | |
|---|---|
| BT | United States |
| .Wisconsin | |
| ..Green County Wisconsin | |
| ...Monticello Wisconsin | |
| SN | Village in S Wisconsin. |
| Montmagny County Quebec | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Montmagny County Quebec | |
| Montmorency County Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Lower Peninsula | |
| ...Montmorency County Michigan | |
| Montmorency No. 1 County Quebec | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Montmorency No. 1 County Quebec | |
| Montmorency No. 2 County Quebec | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Montmorency No. 2 County Quebec | |
| montmorillonite | |
|---|---|
| BT | silicates |
| .sheet silicates | |
| ..clay minerals | |
| ...montmorillonite | |
| UF | Na-montmorillonite |
| RT | beidellite |
| K-bentonite | |
| smectite | |
| nontronite | |
| Montour County Pennsylvania | |
|---|---|
| BT | United States |
| .Pennsylvania | |
| ..Montour County Pennsylvania | |
| Montoya Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Montoya Group | |
| RT | New Mexico |
| Texas | |
| Arizona | |
| SN | Middle and Upper Ordovician. Arizona, S New Mexico and W Texas. Includes Cable Canyon Sandstone, Upham Dolomite, Aleman Formation and Cutter Formation. Added to Thesaurus in 1989. |
| Montpellier France | |
|---|---|
| BT | rault France |
| .Montpellier France | |
| SN | City in E Herault, S France. |
| Montreal and Jesus Islands County Quebec | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Montreal and Jesus Islands County Quebec | |
| NT | Montreal Quebec |
| Montreal Quebec | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Montreal and Jesus Islands County Quebec | |
| ....Montreal Quebec | |
| SN | City on Montreal Island in the Saint Lawrence River in S Quebec. |
| Montrose County Colorado | |
|---|---|
| BT | United States |
| .Colorado | |
| ..Montrose County Colorado | |
| SN | W Colorado. |
| Monts des Maures | |
|---|---|
| USE | Maures Massif |
| Monts Dome | |
|---|---|
| SN | As of 1981, use Chaine des Puys. |
| Monts du Lyonnais | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Monts du Lyonnais | |
| RT | Loire France |
| Rhone France | |
| SN | Indexed with departments as applicable. |
| Montsech | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Iberian Peninsula | |
| ...Spain | |
| ....Catalonia Spain | |
| .....Lerida Spain | |
| ......Montsech | |
| SN | Foothills of the Pyrenees. |
| Montserrat | |
|---|---|
| RT | Barcelona Spain |
| Leeward Islands | |
| Lesser Antilles | |
| Soufriere | |
| SN | Volcanic island in Leeward Islands, West Indies (N16#DG45' W062#DG14). Also a mountain in the Llobregat Valley of Barcelona Province, Spain (N41#DG36' E001#DG48'). Search in combination with country or region. Indexed with both (Leeward Islands and Lesser |
| monzodiorite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..diorites | |
| ...monzodiorite | |
| RT | jotunite |
| monzogranite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..granites | |
| ...monzogranite | |
| RT | monzonites |
| monzonites | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..syenites | |
| ...monzonites | |
| RT | monzogranite |
| Moody County South Dakota | |
|---|---|
| BT | United States |
| .South Dakota | |
| ..Moody County South Dakota | |
| Moodys Branch Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....upper Eocene | |
| ......Moodys Branch Formation | |
| UF | Moodys Marl |
| RT | Louisiana |
| Mississippi | |
| Alabama | |
| Georgia | |
| Jackson Group | |
| SN | In Jackson Group. Added to Thesaurus in 1985. |
| Moodys Marl | |
|---|---|
| USE | Moodys Branch Formation |
| moon rocks | |
|---|---|
| SN | A valid term through mid-1978. Use lunar samples. |
| moonquakes | |
|---|---|
| RT | earthquakes |
| Moon | |
| moonstone | |
|---|---|
| BT | silicates |
| .framework silicates | |
| ..feldspar group | |
| ...alkali feldspar | |
| ....moonstone | |
| RT | gems |
| peristerite | |
| Moore County Meteorite | |
|---|---|
| BT | meteorites |
| .stony meteorites | |
| ..achondrites | |
| ...eucrite | |
| ....Moore County Meteorite | |
| RT | North Carolina |
| Moore County North Carolina | |
| SN | Before 1981, also search Moore County AND meteorites. Added to Thesaurus in 1981. |
| Moore County North Carolina | |
|---|---|
| BT | United States |
| .North Carolina | |
| ..Moore County North Carolina | |
| RT | Moore County Meteorite |
| SN | Central North Carolina. |
| Moore County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Moore County Tennessee | |
| SN | S Tennessee. |
| Moore County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Moore County Texas | |
| SN | Extreme N Texas. |
| Mooreville Chalk | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Mooreville Chalk | |
| RT | Mississippi |
| Alabama | |
| Selma Group | |
| SN | In Selma Group. W Alabama and NE Mississippi. Added to Thesaurus in 1989. |
| Moorman Syncline | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Moorman Syncline | |
| SN | Central and W Kentucky. Added to Thesaurus in 1985. |
| Moose River basin | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Ontario | |
| ...Moose River basin | |
| SN | SW of lower James Bay. |
| Moosebar Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Lower Cretaceous | |
| .....Moosebar Formation | |
| RT | Alberta |
| British Columbia | |
| SN | Alberta and NE British Columbia. Added to Thesaurus in 1989. |
| Mor | |
|---|---|
| BT | soils |
| .Mor | |
| UF | raw humus |
| RT | humus |
| Mull | |
| Mora County New Mexico | |
|---|---|
| BT | United States |
| .New Mexico | |
| ..Mora County New Mexico | |
| SN | NE New Mexico. |
| morainal plains | |
|---|---|
| USE | outwash plains |
| moraines | |
|---|---|
| RT | drift |
| drumlins | |
| glacial features | |
| glacial geology | |
| glaciers | |
| outwash plains | |
| periglacial features | |
| till | |
| Morava | |
|---|---|
| USE | Moravia |
| Morava River valley | |
|---|---|
| BT | Europe |
| .Morava River valley | |
| RT | Serbia |
| Austria | |
| Slovakia | |
| Czech Republic | |
| Moravia | |
| Western Morava River | |
| SN | River valley in NE Austria and W Slovakia and E Moravia. Also a river valley in NE central Serbia. Also search Morava; Morava River. Indexed with Austria and/or Czech Republic and/or Slovakia and/or Serbia as applicable. |
| Moravian Karst | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Czech Republic | |
| ...Moravia | |
| ....Moravian Karst | |
| Moravska Ostrava | |
|---|---|
| USE | Ostrava Czech Republic |
| Moray Firth | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....Scotland | |
| .....Moray Firth | |
| RT | Grampian region Scotland |
| North Sea | |
| Grampian Highlands | |
| Great Glen Fault | |
| SN | Inlet of the North Sea bordered by Grampian and Highland regions in NE Scotland. Added to Thesaurus in 1989. |
| MORB | |
|---|---|
| USE | mid-ocean ridge basalts |
| Morbihan France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Morbihan France | |
| NT | Groix Island |
| RT | Brittany |
| Vilaine Bay | |
| SN | Department in NW France. |
| mordenite | |
|---|---|
| BT | silicates |
| .framework silicates | |
| ..zeolite group | |
| ...mordenite | |
| UF | arduinite |
| ashtonite | |
| flokite | |
| ptilolite | |
| RT | aluminosilicates |
| Morecambe Bay | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....England | |
| .....Morecambe Bay | |
| RT | Cumbria England |
| Irish Sea | |
| Lancashire England | |
| Westmorland England | |
| SN | Inlet of the Irish Sea in NW England. |
| Morehouse Parish Louisiana | |
|---|---|
| BT | United States |
| .Louisiana | |
| ..Morehouse Parish Louisiana | |
| morencite | |
|---|---|
| USE | nontronite |
| Moreno Forma |
|---|
| Moreno Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Moreno Formation | |
| RT | Paleocene |
| California | |
| Marca Shale Member | |
| SN | In Chico Group. Upper Cretaceous and Paleocene (?). Includes four members (ascending): Dosados Sand and Shale, Tierra Loma Shale (including Mercy Sandstone lens), Marca Shale Member, and Dos Palos Shale (includes Cima Sandstone lens). S California. |
| moretanes | |
|---|---|
| BT | organic compounds |
| .hydrocarbons | |
| ..aromatic hydrocarbons | |
| ...hopanoids | |
| ....hopanes | |
| .....moretanes | |
| RT | biomarkers |
| SN | 17#2B, 21#2A(H) hopanes. This term has multiple hierarchies. |
| Moreton Australia | |
|---|---|
| BT | Australasia |
| .Australia | |
| ..Queensland Australia | |
| ...Moreton Australia | |
| RT | Cape York Peninsula |
| SN | Village on Cape York Peninsula in N Queensland. |
| Moreton Bay | |
|---|---|
| BT | Australasia |
| .Australia | |
| ..Queensland Australia | |
| ...Moreton Bay | |
| SN | In SE Queensland just N of Brisbane. |
| Moreton-Clarence Basin | |
|---|---|
| USE | Clarence-Moreton Basin |
| Morez France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Jura France | |
| ....Morez France | |
| SN | Town in in SE Jura, E France. |
| Morgan County Alabama | |
|---|---|
| BT | United States |
| .Alabama | |
| ..Morgan County Alabama | |
| SN | N Alabama. |
| Morgan County Colorado | |
|---|---|
| BT | United States |
| .Colorado | |
| ..Morgan County Colorado | |
| SN | NE Colorado. |
| Morgan County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Morgan County Georgia | |
| SN | N central Georgia. |
| Morgan County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Morgan County Illinois | |
| SN | W central Illinois. |
| Morgan County Indiana | |
|---|---|
| BT | Indiana |
| .Morgan County Indiana | |
| SN | Central Indiana. |
| Morgan County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Morgan County Kentucky | |
| SN | E Kentucky. |
| Morgan County Missouri | |
|---|---|
| BT | United States |
| .Missouri | |
| ..Morgan County Missouri | |
| NT | Versailles Missouri |
| SN | Central Missouri. |
| Morgan County Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Morgan County Ohio | |
| SN | E central Ohio. |
| Morgan County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Morgan County Tennessee | |
| SN | NE central Tennessee. |
| Morgan County Utah | |
|---|---|
| BT | United States |
| .Utah | |
| ..Morgan County Utah | |
| SN | N Utah. |
| Morgan County West Virginia | |
|---|---|
| BT | United States |
| .West Virginia | |
| ..Morgan County West Virginia | |
| SN | E West Virginia. |
| Morgan Hill earthquake 1984 | |
|---|---|
| BT | earthquakes |
| .Morgan Hill earthquake 1984 | |
| RT | California |
| Santa Clara County California | |
| SN | Epicenter at Morgan Hill, Santa Clara County, Central California. Added to Thesaurus in 1989. |
| Morien Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Morien Group | |
| RT | Nova Scotia |
| Cape Breton Island | |
| SN | Cape Breton Island. Added to Thesaurus in 1989. |
| Morin Complex | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Morin Complex | |
| Morlaix France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Finistere France | |
| ....Morlaix France | |
| SN | Town on inlet of English Channel. |
| Mormoiron France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Vaucluse France | |
| ....Mormoiron France | |
| SN | Village in SE France. |
| Mormon Mountains | |
|---|---|
| BT | United States |
| .Nevada | |
| ..Mormon Mountains | |
| SN | SE Nevada. |
| Moroccan Atlas Mountains | |
|---|---|
| BT | Africa |
| .North Africa | |
| ..Morocco | |
| ...Moroccan Atlas Mountains | |
| BT | Africa |
| .North Africa | |
| ..Atlas Mountains | |
| ...Moroccan Atlas Mountains | |
| NT | Anti-Atlas |
| High Atlas | |
| Middle Atlas | |
| SN | Atlas Mountains in Morocco. This term has multiple hierarchies. Added to Thesaurus in 1981. |
| Morocco | |
|---|---|
| BT | Africa |
| .North Africa | |
| ..Morocco | |
| NT | Bou Azzer |
| Cape Bojador | |
| Casablanca Morocco | |
| Moroccan Atlas Mountains | |
| Moulouya River | |
| Rabat Morocco | |
| Rehamna | |
| Rif | |
| Tafilalt | |
| Tangier Morocco | |
| Taourirt Morocco | |
| Tarfaya Morocco | |
| Taza Morocco | |
| UF | Spanish Morocco |
| RT | Sahara |
| Mediterranean region | |
| Atlas Mountains | |
| Maghreb | |
| Ceuta | |
| Western Sahara | |
| Melilla | |
| Meseta | |
| SN | Before 1960, Spanish Morocco was also used. |
| Moroe County West Virginia | |
|---|---|
| BT | United States |
| .West Virginia | |
| ..Moroe County West Virginia | |
| Moroto Mountain | |
|---|---|
| BT | Africa |
| .East Africa | |
| ..Uganda | |
| ...Moroto Mountain | |
| SN | Just E of town of Moroto near Kenya border. |
| morphodynamics | |
|---|---|
| SN | As of 1998, not a valid term for GeoRef. Use landform evolution. |
| morphometry | |
|---|---|
| RT | landform description |
| geomorphology | |
| quantitative geomorphology | |
| SN | Used as a general term. |
| morphostructures | |
|---|---|
| RT | basins |
| domes | |
| geomorphology | |
| trenches | |
| Morrill County Nebraska | |
|---|---|
| BT | United States |
| .Nebraska | |
| ..Morrill County Nebraska | |
| Morris County Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..Morris County Kansas | |
| SN | E central Kansas. |
| Morris County New Jersey | |
|---|---|
| BT | United States |
| .New Jersey | |
| ..Morris County New Jersey | |
| NT | Picatinny Arsenal |
| RT | New Jersey Highlands |
| Long Valley | |
| SN | N New Jersey. |
| Morris County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Morris County Texas | |
| SN | NE Texas. |
| Morrison County Minnesota | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Morrison County Minnesota | |
| Morrison Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Jurassic | |
| ....Upper Jurassic | |
| .....Morrison Formation | |
| RT | New Mexico |
| Utah | |
| Wyoming | |
| Montana | |
| Oklahoma | |
| Colorado | |
| Kansas | |
| Arizona | |
| South Dakota | |
| Brushy Basin Shale Member | |
| Salt Wash Sandstone Member | |
| Westwater Canyon Sandstone Member | |
| SN | In Plata Mountains of Colorado, comprises (ascending) Pony Express Limestone, Bilk Creek Sandstone, Wanakah Marl (restricted), and Junction Creek Sandstone. |
| Morrow County Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Morrow County Ohio | |
| SN | Central Ohio. |
| Morrow County Oregon | |
|---|---|
| BT | United States |
| .Oregon | |
| ..Morrow County Oregon | |
| SN | N Oregon. |
| Morrow Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Morrow Formation | |
| RT | Oklahoma |
| Arkansas | |
| Morrowan | |
| SN | Composed of shales with some thin limestones and occasional sandstones. SE Arkansas, and central E and NE Oklahoma. |
| Morrow Series | |
|---|---|
| USE | Morrowan |
| Morrowan | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Lower Pennsylvanian | |
| ......Morrowan | |
| NT | Bloyd Formation |
| UF | Morrow Series |
| Morrowan Series | |
| RT | Chesterian |
| Watahomigi Formation | |
| Springer Formation | |
| Morrow Formation | |
| SN | Provincial series, North America. Above Chesterian (Mississippian), below Atokan. |
| Morrowan Series | |
|---|---|
| USE | Morrowan |
| Mortagne France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Orne France | |
| ....Mortagne France | |
| UF | Mortagne-au-Perchey France |
| SN | Town in SE Orne, NW France. |
| Mortagne-au-Perchey France | |
|---|---|
| USE | Mortagne France |
| Morton County Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..Morton County Kansas | |
| SN | Extreme SW Kansas. |
| Morton County North Dakota | |
|---|---|
| BT | United States |
| .North Dakota | |
| ..Morton County North Dakota | |
| SN | Central North Dakota. |
| Morvan | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Central Massif | |
| ....Morvan | |
| UF | Morvan Massif |
| Morvan Mountains | |
| RT | Saone-et-Loire France |
| Yonne France | |
| Cote-d'Or France | |
| Nievre France | |
| SN | Northernmost spur of the Central Massif. Indexed with departments as applicable. |
| Morvan Massif | |
|---|---|
| USE | Morvan |
| Morvan Mountains | |
|---|---|
| USE | Morvan |
| Mosabani Mine | |
|---|---|
| USE | Mosaboni Mines |
| Mosaboni Mines | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Bihar India | |
| ....Mosaboni Mines | |
| UF | Mosabani Mine |
| Musabani copper mines | |
| Mushabani copper mines | |
| RT | mines |
| copper ores | |
| SN | SE Bihar, India. Also search Mosaboni. |
| mosaics | |
|---|---|
| UF | photomosaics |
| RT | aerial photography |
| photogeology | |
| photogrammetry | |
| photography | |
| remote sensing | |
| space photography | |
| multispectral scanner | |
| SAR | |
| thematic mapper | |
| imagery | |
| multispectral analysis | |
| photogeologic maps | |
| SN | Added to Thesaurus in 1982. |
| Mosasauridae | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Reptilia | |
| ....Diapsida | |
| .....Lepidosauria | |
| ......Squamata | |
| .......Lacertilia | |
| ........Mosasauridae | |
| SN | Family. Also search Mosasaurus. |
| Mosbas | |
|---|---|
| USE | Moscow Basin |
| Moscovian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Moscovian | |
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Upper Carboniferous | |
| .....Moscovian | |
| SN | Russia. |
| moscovite | |
|---|---|
| USE | muscovite |
| Moscow Basin | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Moscow Basin | |
| BT | Europe |
| .Moscow Basin | |
| UF | Mosbas |
| Moscow coal basin | |
| RT | coal fields |
| SN | Lignite basin extending over 600 miles in an arc from Borovichi in Leningrad Oblast to Skopin, SE of Moscow, in Ryazan Oblast. This term has multiple hierarchies. |
| Moscow coal basin | |
|---|---|
| USE | Moscow Basin |
| Moscow Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Devonian | |
| ....Middle Devonian | |
| .....Moscow Formation | |
| RT | Pennsylvania |
| New York | |
| Hamilton Group | |
| SN | In Hamilton Group. W and central New York and Pennsylvania. Added to Thesaurus in 1989. |
| Moscow River | |
|---|---|
| USE | Moskva River |
| Moscow Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Moscow Russian Federation | |
| BT | Europe |
| .Moscow Russian Federation | |
| UF | Moskva Russian Federation |
| SN | Oblast and city in W central Russian Federation. Before 1993, Moscow Russian Republic was also used. This term has multiple hierarchies. |
| Moscow State University | |
|---|---|
| USE | Moscow University |
| Moscow Syneclise | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Moscow Syneclise | |
| BT | Europe |
| .Moscow Syneclise | |
| RT | Moscow-Pechora Syneclise |
| SN | SE European Russian Federation. This term has multiple hierarchies. |
| Moscow University | |
|---|---|
| UF | Moscow State University |
| RT | Russian Federation |
| academic institutions | |
| SN | In Moscow. |
| Moscow-Pechora Syneclise | |
|---|---|
| BT | Commonwealth of Independent States |
| .Moscow-Pechora Syneclise | |
| BT | Russian Platform |
| .Moscow-Pechora Syneclise | |
| RT | Russian Federation |
| Europe | |
| Pechora Basin | |
| Pechora River | |
| Moscow Syneclise | |
| SN | This term has multiple hierarchies. Indexed with countries and Europe if applicable. Added to Thesaurus in 1981. |
| Mosel Valley | |
|---|---|
| USE | Moselle Valley |
| Moselle France | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Moselle France | |
| RT | Lorraine |
| Saar Basin | |
| SN | Department in NE France. |
| Moselle River | |
|---|---|
| BT | Europe |
| .Moselle River | |
| RT | France |
| Germany | |
| Luxembourg | |
| SN | Rises in NE France and flows N and NE entering the Rhine River at Koblenz. Indexed with countries as applicable. |
| Moselle Valley | |
|---|---|
| BT | Europe |
| .Moselle Valley | |
| UF | Mosel Valley |
| RT | France |
| Germany | |
| Luxembourg | |
| SN | River valley. Indexed with countries as applicable. |
| Moskva River | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Moskva River | |
| BT | Asia |
| .Moskva River | |
| UF | Moscow River |
| SN | Flows through Moscow and then SE into the Oka River. This term has multiple hierarchies. |
| Moskva Russian Federation | |
|---|---|
| USE | Moscow Russian Federation |
| Mosquito Range | |
|---|---|
| RT | Colorado |
| U. S. Rocky Mountains | |
| SN | S part of Park Range near Leadville. Indexed with U. S. Rocky Mountains and Colorado counties or regions as applicable. |
| Mossamedes | |
|---|---|
| BT | Africa |
| .Central Africa | |
| ..Angola | |
| ...Mossamedes | |
| UF | Mocamedes |
| RT | Namibe Angola |
| SN | Desert and basin in extreme SW part of Angola. Before 1993, also used for the province and city. As of 1993, see Namibe Angola for the province and city. |
| Mossbauer | |
|---|---|
| SN | A valid index term through 1977. After 1977, use Mossbauer spectroscopy or Mossbauer spectra. |
| Mossbauer analysis | |
|---|---|
| USE | Mossbauer spectroscopy |
| Mossbauer effect | |
|---|---|
| SN | Not a valid GeoRef index term after 1971. Used in subfile G. Now use Mossbauer spectra or Mossbauer spectroscopy. |
| Mossbauer spectra | |
|---|---|
| BT | spectra |
| .Mossbauer spectra | |
| RT | spectroscopy |
| Mossbauer spectroscopy | |
| SN | Before 1978, also search Mossbauer. |
| Mossbauer spectroscopy | |
|---|---|
| BT | spectroscopy |
| .Mossbauer spectroscopy | |
| UF | Mossbauer analysis |
| RT | chemical analysis |
| analysis | |
| Mossbauer spectra | |
| SN | Before 1978, also search Mossbauer AND spectroscopy. |
| Motagua Fault | |
|---|---|
| BT | Central America |
| .Guatemala | |
| ..Motagua Fault | |
| SN | SE Guatemala. Added to Thesaurus in 1981. |
| motion, ground | |
|---|---|
| USE | ground motion |
| motion, plasma | |
|---|---|
| SN | Not a valid term for GeoRef. Usually out-of-scope. Used as plasma motion with magnetosphere. |
| motion, strong | |
|---|---|
| USE | strong motion |
| motions | |
|---|---|
| RT | acceleration |
| angular momentum | |
| Chandler wobble | |
| Earth | |
| eccentricity | |
| Milankovitch theory | |
| Moon | |
| nutation | |
| obliquity of the ecliptic | |
| orbits | |
| oscillations | |
| precession | |
| rotation | |
| Motley County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Motley County Texas | |
| Motojuku Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Miocene | |
| .....Motojuku Formation | |
| RT | Honshu |
| Japan | |
| Moty Formation | |
|---|---|
| RT | Lower Cambrian |
| Russian Federation | |
| Siberia | |
| SN | Siberia. ?Lower Cambrian. Indexed with age or ages as applicable. Added to Thesaurus in 1989. |
| Moulouya River | |
|---|---|
| BT | Africa |
| .North Africa | |
| ..Morocco | |
| ...Moulouya River | |
| UF | Moluya River |
| Mulwiya River | |
| SN | Rises in central part of country and flows NE into Mediterranean Sea. Before 1978, also search Moluya, Mulwiya, or Moulouya. |
| Moultrie County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Moultrie County Illinois | |
| mounds | |
|---|---|
| RT | bedding plane irregularities |
| Isoptera | |
| mud mounds | |
| nests | |
| sedimentary structures | |
| termite mounds | |
| SN | Also index bedding plane irregularities as applicable. |
| mounds, algal | |
|---|---|
| USE | algal mounds |
| Mount Adams | |
|---|---|
| BT | United States |
| .Mount Adams | |
| RT | Washington |
| New Hampshire | |
| Cascade Range | |
| Coos County New Hampshire | |
| White Mountains | |
| Yakima County Washington | |
| SN | Mountain in Presidential Range of White Mountains, Coos County, N New Hampshire. Also a mountain in Cascade Range, Yakima County, S Washington. Indexed with states and counties and mountain ranges as applicable. Added to Thesaurus in 1985. |
| Mount Agoeng | |
|---|---|
| USE | Mount Agung |
| Mount Agung | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Indonesia | |
| ...Bali | |
| ....Mount Agung | |
| UF | Agung, Mount |
| Mount Agoeng | |
| RT | volcanoes |
| SN | Highest volcanic peak on Bali. This term has multiple hierarchies. |
| Mount Amiata | |
|---|---|
| USE | Monte Amiata |
| Mount Antero | |
|---|---|
| BT | United States |
| .Colorado | |
| ..Chaffee County Colorado | |
| ...Mount Antero | |
| BT | United States |
| .U. S. Rocky Mountains | |
| ..Sawatch Range | |
| ...Mount Antero | |
| SN | Peak in Sawatch Range, central Colorado. This term has multiple hierarchies. Added to Thesaurus in 1985. |
| Mount Asama | |
|---|---|
| USE | Asama |
| Mount Baker | |
|---|---|
| RT | Cascade Range |
| Uganda | |
| Washington | |
| Whatcom County Washington | |
| SN | Peak in Cascade Range, NW Washington. Also a peak in the Ruwenzori mountain group in W Uganda. Indexed with Washington, Whatcom County Washington, and Cascade Range; or Uganda and Ruwenzori as applicable. Added to Thesaurus in 1985. |
| Mount Borah | |
|---|---|
| USE | Borah Peak |
| Mount Borah earthquake, 1983 | |
|---|---|
| USE | Borah Peak earthquake 1983 |
| Mount Cameroon | |
|---|---|
| BT | Africa |
| .West Africa | |
| ..Cameroon | |
| ...Mount Cameroon | |
| UF | Cameroon Mountain |
| RT | volcanoes |
| SN | Mountain. SW Cameroon. Added to Thesaurus in 1989. |
| Mount Carmel | |
|---|---|
| BT | Asia |
| .Middle East | |
| ..Israel | |
| ...Mount Carmel | |
| RT | Geula Caves |
| SN | Mountain in N near Mediterranean coast. |
| Mount Egmont | |
|---|---|
| BT | Australasia |
| .New Zealand | |
| ..Taranaki New Zealand | |
| ...Mount Egmont | |
| UF | Egmont, Mount |
| Mount Taranaki | |
| Taranaki, Mount | |
| RT | volcanoes |
| SN | Large stratovolcano, W North Island, New Zealand. Indexed with North Island. |
| Mount Elbrus | |
|---|---|
| USE | Elbrus |
| Mount Erebus | |
|---|---|
| RT | Alberta |
| Antarctica | |
| Canadian Rocky Mountains | |
| Jasper National Park | |
| Ross Island | |
| volcanoes | |
| SN | Mountain in SW Alberta. Also a volcano on Ross Island, Antarctica. Indexed with Alberta and Canadian Rocky Mountains; or Antarctica and Ross Island as applicable. Added to Thesaurus in 1985. |
| Mount Etna | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Sicily Italy | |
| ....Mount Etna | |
| UF | Etna |
| RT | volcanoes |
| SN | Active volcano in NE Sicily. |
| Mount Everest | |
|---|---|
| BT | malayas |
| .Mount Everest | |
| UF | Chomolungma |
| Qomolangma Feng | |
| RT | China |
| Xizang China | |
| Nepal | |
| SN | On China-Nepal border. Indexed with Nepal and/or Xizang China as applicable. Added to Thesaurus in 1985. |
| Mount Fuji | |
|---|---|
| USE | Fujiyama |
| Mount Girnar | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Gujarat India | |
| ....Mount Girnar | |
| RT | Kathiawar |
| SN | S central Kathiawar Peninsula. |
| Mount Hakone | |
|---|---|
| BT | nshu |
| .Mount Hakone | |
| UF | Hakone Volcano |
| RT | volcanoes |
| Hakone | |
| SN | Extinct volcano in central Honshu. Before 1993, also search Hakone. |
| Mount Hood | |
|---|---|
| BT | United States |
| .Oregon | |
| ..Mount Hood | |
| BT | United States |
| .Cascade Range | |
| ..Mount Hood | |
| RT | Clackamas County Oregon |
| Hood River County Oregon | |
| SN | Peak in Cascade Range in Clackamas and Hood River counties. This term has multiple hierarchies. |
| Mount Isa Australia | |
|---|---|
| BT | Australasia |
| .Australia | |
| ..Queensland Australia | |
| ...Mount Isa Australia | |
| SN | Town and mining center in W Queensland, Australia. |
| Mount Isa Inlier | |
|---|---|
| BT | Australasia |
| .Australia | |
| ..Queensland Australia | |
| ...Mount Isa Inlier | |
| SN | Proterozoic, NW Queensland. |
| Mount Jefferson | |
|---|---|
| RT | Cascade Range |
| Coos County New Hampshire | |
| Jefferson County Oregon | |
| Linn County Oregon | |
| Marion County Oregon | |
| Nevada | |
| New Hampshire | |
| Nye County Nevada | |
| Oregon | |
| Toquima Range | |
| United States | |
| White Mountains | |
| SN | On the border of Jefferson, Linn and Marion counties, Cascade Range, N central Oregon; also in Toquima Range, Nye County, central Nevada; and in Presidential Range of White Mountains, Coos County, New Hampshire. Indexed with states, counties, and mountain |
| Mount Katahdin | |
|---|---|
| BT | United States |
| .Maine | |
| ..Piscataquis County Maine | |
| ...Mount Katahdin | |
| SN | N terminus of the Appalachian Trail in N central Maine. Indexed with mountain range as applicable. Added to Thesaurus in 1989. |
| Mount Kenya | |
|---|---|
| BT | Africa |
| .East Africa | |
| ..Kenya | |
| ...Mount Kenya | |
| RT | volcanoes |
| SN | Extinct volcano in central Kenya. |
| Mount Lassen | |
|---|---|
| USE | Lassen Peak |
| Mount Lofty Ranges | |
|---|---|
| BT | Australasia |
| .Australia | |
| ..South Australia | |
| ...Mount Lofty Ranges | |
| SN | SE South Australia. |
| Mount Lyell | |
|---|---|
| RT | California |
| Sierra Nevada | |
| Tasmania Australia | |
| SN | Site of metals mining activity in W Tasmania. Also a peak in Sierra Nevada near junction of Madera, Mariposa, and Tuolumne counties in E central California. Indexed with location and mountain ranges as applicable. |
| Mount Mazama | |
|---|---|
| BT | United States |
| .Oregon | |
| ..Klamath County Oregon | |
| ...Mount Mazama | |
| RT | volcanoes |
| Crater Lake | |
| Mazama Ash | |
| SN | Prehistoric volcano in S Oregon. Caldera now occupied by Crater Lake. Added to Thesaurus in 1985. |
| Mount McKinley National Park | |
|---|---|
| USE | Denali National Park |
| Mount Meager | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..British Columbia | |
| ...Mount Meager | |
| UF | Meager, Mount |
| RT | volcanoes |
| SN | SW British Columbia near the Garibaldi volcanic belt. |
| Mount Melbourne | |
|---|---|
| BT | Antarctica |
| .Victoria Land | |
| ..Mount Melbourne | |
| UF | Melbourne, Mount |
| RT | volcanoes |
| SN | Coast of Victoria Land near Terra Nova Bay. |
| Mount Mihara | |
|---|---|
| BT | nshu |
| .Izu-shichito | |
| ..Izu-Oshima | |
| ...Mount Mihara | |
| UF | Mihara (Mount) |
| Mihara Volcano | |
| Mihara-Yama | |
| RT | volcanoes |
| O-shima | |
| SN | Use for the volcano on Izu-Oshima of Izu-shichito island group S of Sagami Bay. Also search Mihara. Before 1993, O-shima was a broader term. Izu-Oshima was also used to refer to the volcano before 1993. |
| Mount Morgan | |
|---|---|
| RT | Glacier National Park |
| Montana | |
| Queensland Australia | |
| SN | Mining center in E Queensland. Also a peak in Glacier National Park in NW Montana. After 1992, use Mount Morgan Australia for the town. Indexed with county or region and mountain range as applicable. |
| Mount Namjagbarwa | |
|---|---|
| BT | Asia |
| .Himalayas | |
| ..Mount Namjagbarwa | |
| BT | Asia |
| .Far East | |
| ..China | |
| ...Xizang China | |
| ....Mount Namjagbarwa | |
| UF | Namjagbarwa, Mount |
| SN | Himalayas of Xizang, SW China. This term has multiple hierarchies. Added to Thesaurus in 1989. |
| Mount Olympus | |
|---|---|
| USE | Olympus |
| Mount Ontake | |
|---|---|
| USE | Ontake |
| Mount Pelee | |
|---|---|
| BT | Caribbean region |
| .West Indies | |
| ..Antilles | |
| ...Lesser Antilles | |
| ....Martinique | |
| .....Mount Pelee | |
| UF | Mont Pelee |
| RT | volcanoes |
| SN | Volcano. N Martinique. Added to Thesaurus in 1989. |
| Mount Pinatubo | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Philippine Islands | |
| ...Luzon | |
| ....Mount Pinatubo | |
| UF | Pinatubo |
| RT | volcanoes |
| SN | Volcano on SE Luzon, NE Philippine Islands. Recent plinian-type eruption. Added to Thesaurus in 1995. |
| Mount Rainier | |
|---|---|
| BT | United States |
| .Cascade Range | |
| ..Mount Rainier | |
| BT | United States |
| .Washington | |
| ..Pierce County Washington | |
| ...Mount Rainier | |
| RT | volcanoes |
| Nisqually Glacier | |
| SN | Volcanic peak of Cascade Range in Mount Rainier National Park in W central Washington. This term has multiple hierarchies. |
| Mount Rainier National Park | |
|---|---|
| BT | United States |
| .Washington | |
| ..Mount Rainier National Park | |
| RT | national parks |
| Lewis County Washington | |
| Pierce County Washington | |
| SN | W central part of state. Mt. Rainier occupies one fourth of park area in W central Washington. |
| Mount Read Volcanics | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Cambrian | |
| ....Mount Read Volcanics | |
| RT | Tasmania Australia |
| SN | Cambrian. W Tasmania. Added to Thesaurus in 1993. |
| Mount Redoubt | |
|---|---|
| USE | Redoubt |
| Mount Saint Helens | |
|---|---|
| BT | United States |
| .Cascade Range | |
| ..Mount Saint Helens | |
| BT | United States |
| .Washington | |
| ..Skamania County Washington | |
| ...Mount Saint Helens | |
| RT | volcanoes |
| SN | Peak in NW Skamania County in S Washington. This term has multiple hierarchies. |
| Mount Scopus Gr |
|---|
| Mount Scopus Group | |
|---|---|
| RT | Eocene |
| Ghareb Formation | |
| Israel | |
| Jordan | |
| K-T boundary | |
| Paleocene | |
| Syria | |
| Upper Cretaceous | |
| SN | Senonian to Eocene. Indexed with ages as applicable. Added to Thesaurus in 1989. |
| Mount Shasta | |
|---|---|
| BT | United States |
| .California | |
| ..Siskiyou County California | |
| ...Mount Shasta | |
| BT | United States |
| .Cascade Range | |
| ..Mount Shasta | |
| SN | Cascade Range, N California. This term has multiple hierarchies. Added to Thesaurus in 1985. |
| Mount Shields Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Mesoproterozoic | |
| ....Mount Shields Formation | |
| RT | Idaho |
| Montana | |
| Belt Supergroup | |
| Missoula Group | |
| SN | In Missoula Group of Belt Supergroup. Added to Thesaurus in 1989. |
| Mount Simon Sandstone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Cambrian | |
| ....Upper Cambrian | |
| .....Mount Simon Sandstone | |
| RT | Iowa |
| Illinois | |
| Indiana | |
| Ohio | |
| Wisconsin | |
| Minnesota | |
| Michigan | |
| SN | Unconformably overlies Precambrian basement; underlies Eau Claire Formation. Added to Thesaurus in 1989. |
| Mount Spurr | |
|---|---|
| BT | United States |
| .Alaska | |
| ..Southern Alaska | |
| ...Mount Spurr | |
| UF | Spurr, Mount |
| RT | volcanoes |
| SN | N Aleutian Range. |
| Mount Taranaki | |
|---|---|
| USE | Mount Egmont |
| Mount Wood | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..Yukon Territory | |
| ...Mount Wood | |
| RT | Saint Elias Mountains |
| SN | Peak of Saint Elias Mountains in SW Yukon Territory. |
| mountain building | |
|---|---|
| SN | A valid term through 1973. After 1973, use orogeny. |
| mountain crystal | |
|---|---|
| USE | quartz crystal |
| mountains | |
|---|---|
| RT | alpine environment |
| highlands | |
| hills | |
| landform description | |
| landforms | |
| mesas | |
| geomorphology | |
| Mountrail County North Dakota | |
|---|---|
| BT | United States |
| .North Dakota | |
| ..Mountrail County North Dakota | |
| Mousterian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Stone Age | |
| ....Paleolithic | |
| .....Mousterian | |
| RT | Pleistocene |
| archaeology | |
| Quaternary | |
| SN | Archaeological classification. |
| Mouthoumet Massif | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Aude France | |
| ....Mouthoumet Massif | |
| SN | S France. Also search Mouthoumet. |
| Mouydir | |
|---|---|
| BT | Africa |
| .North Africa | |
| ..Algeria | |
| ...Mouydir | |
| SN | Mountains in S central Algeria. |
| movement | |
|---|---|
| UF | movements |
| RT | plate tectonics |
| soils | |
| ground water | |
| circulation | |
| magma transport | |
| transport | |
| preferential flow | |
| water regimes | |
| ice movement | |
| SN | As of 1995, not to be used for pollution. Use pollutants AND transport. |
| movements | |
|---|---|
| USE | movement |
| movements, mass | |
|---|---|
| USE | mass movements |
| movements, vertical | |
|---|---|
| USE | vertical movements |
| moveout | |
|---|---|
| UF | moveouts |
| RT | reflection methods |
| elastic waves | |
| seismic methods | |
| arrival time | |
| dip moveout | |
| normal moveout | |
| common-depth-point method | |
| traveltime | |
| SN | Added to Thesaurus in 1989. |
| moveouts | |
|---|---|
| USE | moveout |
| Mower County Minnesota | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Mower County Minnesota | |
| Mowry Shale | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Lower Cretaceous | |
| .....Mowry Shale | |
| RT | Upper Cretaceous |
| Wyoming | |
| Montana | |
| South Dakota | |
| Colorado Group | |
| SN | In Colorado Group. Consists of hard lighter-gray shales and thin bedded sandstones that weather light gray and form ridges. Montana, W South Dakota, and Wyoming. Indexed with states as applicable. |
| Moxa Arch | |
|---|---|
| BT | United States |
| .Moxa Arch | |
| RT | Utah |
| Wyoming | |
| Box Elder County Utah | |
| Dakota Formation | |
| Sweetwater County Wyoming | |
| Green River basin | |
| Lincoln County Wyoming | |
| Sublette County Wyoming | |
| Uinta County Wyoming | |
| SN | NS trending anticlinorium in Green River basin of SW Wyoming and NE Utah. Known for petroleum production. Indexed with counties as applicable. Added to Thesaurus in 1993. |
| Mozambique | |
|---|---|
| BT | Africa |
| .East Africa | |
| ..Mozambique | |
| NT | Maputo Mozambique |
| Tete Mozambique | |
| Zambezia Mozambique | |
| UF | Portuguese East Africa |
| RT | Zambezi Valley |
| Limpopo Orogeny | |
| Ecca Group | |
| Limpopo Basin | |
| Limpopo Belt | |
| East African Rift | |
| Lake Malawi | |
| Mozambique Belt | |
| Lebombo Mountains | |
| SN | Before 1969, Portuguese East Africa was used. |
| Mozambique Belt | |
|---|---|
| BT | Africa |
| .Mozambique Belt | |
| RT | Ethiopia |
| Kenya | |
| Malawi | |
| Mozambique | |
| Tanzania | |
| SN | Orogenic belt. Mountains in N extend to the rim of the Great Rift Valley in E Africa. Indexed with countries as applicable. |
| Mozambique Channel | |
|---|---|
| BT | Indian Ocean |
| .Mozambique Channel | |
| RT | DSDP Site 242 |
| DSDP Site 243 | |
| DSDP Site 244 | |
| SN | Strait between Madagascar and Mozambique. |
| mpden County Massachusetts | |
|---|---|
| NT | Springfield Massachusetts |
| mpshire England | |
|---|---|
| NT | Fawley England |
| Mpumalanga South Africa | |
|---|---|
| BT | Africa |
| .Southern Africa | |
| ..South Africa | |
| ...Mpumalanga South Africa | |
| NT | Barberton Mountain Land |
| Barberton South Africa | |
| UF | Eastern Transvaal South Africa |
| RT | Barberton greenstone belt |
| Fig Tree Series | |
| Transvaal region | |
| Bushveld Complex | |
| Merensky Reef | |
| Vaal River | |
| Waterberg System | |
| Lebombo Mountains | |
| Wolkberg Group | |
| SN | Province W of Swaziland in NE South Africa. Formerly E part of Transvaal. Eastern Transvaal South Africa was used as the name briefly in the mid-1990's. Before 1998, also search Transvaal region. |
| mroseite | |
|---|---|
| BT | tellurites |
| .mroseite | |
| msburg Formation#Blue Ridge |
|---|
| MSS | |
|---|---|
| SN | Not a valid term for GeoRef. Acronym for various entities including multispectral scanner; Minnesota Speleological Survey. |
| Mt. | |
|---|---|
| SN | Not a valid term for GeoRef. See under Mount unless a different term is specified below. (Note added 1995.) |
| Mt. Amiata | |
|---|---|
| USE | Monte Amiata |
| Mt. Asama | |
|---|---|
| USE | Asama |
| Mt. Borah | |
|---|---|
| USE | Borah Peak |
| Mt. Elbrus | |
|---|---|
| USE | Elbrus |
| Mt. Fuji | |
|---|---|
| USE | Fujiyama |
| Mt. Fuji volcano | |
|---|---|
| USE | Fujiyama |
| Mt. Lassen | |
|---|---|
| USE | Lassen Peak |
| Mt. Olympus | |
|---|---|
| USE | Olympus |
| Mt. Ontake | |
|---|---|
| USE | Ontake |
| Mt. Redoubt | |
|---|---|
| USE | Redoubt |
| Mubarek Uzbekistan | |
|---|---|
| BT | Asia |
| .Uzbekistan | |
| ..Mubarek Uzbekistan | |
| SN | Village SW of Samarkand. This term has multiple hierarchies. |
| mud | |
|---|---|
| BT | sediments |
| .clastic sediments | |
| ..mud | |
| RT | clay |
| silt | |
| terrigenous materials | |
| mud banks | |
| drilling muds | |
| mud mounds | |
| ooze | |
| mud lumps | |
| sludge | |
| mud volcanoes | |
| mineralized mud | |
| mud balls, armored | |
|---|---|
| USE | armored mud balls |
| mud banks | |
|---|---|
| UF | mudbanks |
| RT | geomorphology |
| banks | |
| carbonate banks | |
| fluvial features | |
| shore features | |
| mud | |
| mud cracks | |
|---|---|
| USE | mudcracks |
| mud flats | |
|---|---|
| UF | mudflats |
| RT | shore features |
| marine terraces | |
| chenier plains | |
| tidal flats | |
| mud flows | |
|---|---|
| USE | mudflows |
| mud lumps | |
|---|---|
| BT | sedimentary structures |
| .bedding plane irregularities | |
| ..mud lumps | |
| UF | mudlumps |
| RT | fluvial features |
| clay | |
| shore features | |
| mud mounds | |
| mud | |
| mud mounds | |
|---|---|
| BT | sedimentary structures |
| .biogenic structures | |
| ..bioherms | |
| ...mud mounds | |
| UF | mudmounds |
| RT | mounds |
| Bryophyta | |
| mud | |
| mud lumps | |
| SN | Added to Thesaurus in 1993. |
| mud volcanoes | |
|---|---|
| UF | hervidero |
| macaluba | |
| sand volcanoes | |
| RT | lava |
| geomorphology | |
| volcanoes | |
| volcanology | |
| mud | |
| ejecta | |
| SN | Used for an accumulation, usually conical, of mud and rock ejected by volcanic gases; also for a similar accumulation formed by escaping petroliferous gases. |
| mud waves | |
|---|---|
| SN | After 1992, use mud AND bottom features. See also ripple marks and submarine dunes. |
| mudbanks | |
|---|---|
| USE | mud banks |
| mudcracks | |
|---|---|
| BT | sedimentary structures |
| .bedding plane irregularities | |
| ..mudcracks | |
| UF | mud cracks |
| shrinkage cracks | |
| RT | gilgai |
| Muddy Creek Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Tertiary | |
| ....Muddy Creek Formation | |
| RT | Pliocene |
| Miocene | |
| Utah | |
| Nevada | |
| Arizona | |
| SN | Miocene or Pliocene. SE Nevada, NW Arizona and SW Utah. Indexed with ages as applicable. Added to Thesaurus in 1985. |
| Muddy J Formation | |
|---|---|
| USE | J Sandstone |
| Muddy Sandstone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Lower Cretaceous | |
| .....Muddy Sandstone | |
| RT | Wyoming |
| Montana | |
| J Sandstone | |
| SN | Of Thermopolis Shale. Overlies a lower black shale member and underlies a black shale member. Surface and subsurface in central N Wyoming and subsurface in central S Montana. |
| mudflats | |
|---|---|
| USE | mud flats |
| mudflows | |
|---|---|
| BT | mass movements |
| .mudflows | |
| NT | mudslides |
| UF | mud flows |
| RT | erosion |
| slope stability | |
| geomorphology | |
| geologic hazards | |
| landslides | |
| soil erosion | |
| lahars | |
| mudlumps | |
|---|---|
| USE | mud lumps |
| mudmounds | |
|---|---|
| USE | mud mounds |
| mudrocks | |
|---|---|
| USE | mudstone |
| mudslides | |
|---|---|
| BT | mass movements |
| .mudflows | |
| ..mudslides | |
| RT | slope stability |
| geomorphology | |
| geologic hazards | |
| landslides | |
| earthflows | |
| mudstone | |
|---|---|
| BT | sedimentary rocks |
| .clastic rocks | |
| ..mudstone | |
| UF | mudrocks |
| RT | terrigenous materials |
| claystone | |
| siltstone | |
| Mudurnu earthquake 1967 | |
|---|---|
| BT | earthquakes |
| .Mudurnu earthquake 1967 | |
| RT | Turkey |
| Anatolia | |
| SN | In Bolu province, NW Turkey. |
| Muenster | |
|---|---|
| SN | Not a valid term for GeoRef. See Munster Germany. |
| Muenster in Westfalen Germany | |
|---|---|
| USE | Munster Germany |
| Muensterland | |
|---|---|
| USE | Munsterland |
| Mugan Steppe | |
|---|---|
| BT | Europe |
| .Azerbaijan | |
| ..Mugan Steppe | |
| RT | Kura Lowland |
| SN | Part of Kura Lowland S of Aras River and Kura River in SE Azerbaijan. Also search Mugan. This term has multiple hierarchies. |
| mugearite | |
|---|---|
| BT | igneous rocks |
| .volcanic rocks | |
| ..basalts | |
| ...alkali basalts | |
| ....mugearite | |
| Mugodzhar Hills | |
|---|---|
| BT | Commonwealth of Independent States |
| .Kazakhstan | |
| ..Mugodzhar Hills | |
| BT | Commonwealth of Independent States |
| .Urals | |
| ..Mugodzhar Hills | |
| UF | Mugodzhars |
| Mugodzhary | |
| RT | Aktyubinsk Kazakhstan |
| Southern Urals | |
| SN | Southernmost extension of the Urals in Aktyubinsk Oblast. Also search Mugodzhar. This term has multiple hierarchies. |
| Mugodzhars | |
|---|---|
| USE | Mugodzhar Hills |
| Mugodzhary | |
|---|---|
| USE | Mugodzhar Hills |
| Muhlenberg County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Muhlenberg County Kentucky | |
| Mukhor-Tala Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Buryat Russian Federation | |
| ...Mukhor-Tala Russian Federation | |
| SN | Village E of Lake Baikal in former Buryat A.S.S.R., SE Russian Federation. Before 1993, Mukhor-Tala Russian Republic was also used. This term has multiple hierarchies. |
| Mule Ear Diatreme | |
|---|---|
| BT | United States |
| .Texas | |
| ..Brewster County Texas | |
| ...Mule Ear Diatreme | |
| SN | Mountain in Mule Ear Peaks, SW Texas. Also search Mule Ear. |
| Mulhouse Basin | |
|---|---|
| BT | ut-Rhin France |
| .Mulhouse Basin | |
| RT | Alsace |
| Rhine Graben | |
| SN | Evaporite basin of the Rhine Graben, NE France. |
| Mull | |
|---|---|
| BT | soils |
| .Mull | |
| RT | humus |
| Mor | |
| Mull Island | |
| Mull Island | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....Scotland | |
| .....Argyllshire Scotland | |
| ......Mull Island | |
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....Scotland | |
| .....Strathclyde region Scotland | |
| ......Mull Island | |
| BT | brides |
| .Inner Hebrides | |
| ..Mull Island | |
| RT | Mull |
| SN | Island of the Inner Hebrides, Argyllshire, Scotland. Before 1978, also search Mull. After 1978, Mull is restricted for use as the soil. This term has multiple hierarchies. |
| Mullen Creek-Nash Fork shear zone | |
|---|---|
| BT | United States |
| .Mullen Creek-Nash Fork shear zone | |
| UF | Nash Fork-Mullen Creek shear zone |
| RT | Wyoming |
| U. S. Rocky Mountains | |
| Colorado | |
| Medicine Bow Mountains | |
| Sierra Madre Range | |
| SN | SE Wyoming and NE Colorado. Indexed with states as applicable. Added to Thesaurus in 1985. |
| mullions | |
|---|---|
| RT | lineation |
| metamorphic rocks | |
| structural analysis | |
| mullite | |
|---|---|
| BT | silicates |
| .orthosilicates | |
| ..nesosilicates | |
| ...mullite | |
| multichannel filters | |
|---|---|
| RT | filters |
| SN | Added to Thesaurus in 1981. |
| multichannel methods | |
|---|---|
| RT | data processing |
| filters | |
| geophysical methods | |
| geophysical surveys | |
| methods | |
| seismic methods | |
| seismology | |
| SN | Added to Thesaurus in 1985. |
| multidomains | |
|---|---|
| BT | magnetic domains |
| .multidomains | |
| multilayer hydrologic systems | |
|---|---|
| USE | multiple aquifers |
| multilayered materials | |
|---|---|
| USE | layered materials |
| multilayered systems | |
|---|---|
| SN | Not a valid term for GeoRef. As of 1993, see multiple aquifers. |
| multiphase flow | |
|---|---|
| RT | aquifers |
| hydraulics | |
| hydrodynamics | |
| hydrology | |
| light nonaqueous phase liquids | |
| multiple aquifers | |
| SN | Added to Thesaurus in 1981. |
| multiple aquifers | |
|---|---|
| UF | multilayer hydrologic systems |
| RT | ground water |
| aquifers | |
| leaky aquifers | |
| multiphase flow | |
| layered materials | |
| SN | Before 1993, also search multilayered systems; multilayer aquifers. Added to Thesaurus in 1993. |
| multiple reflections | |
|---|---|
| RT | backscattering |
| elastic waves | |
| reflection methods | |
| seismic methods | |
| seismology | |
| wave dispersion | |
| wave splitting | |
| waves | |
| SN | Seismic wave with more than one reflection. Also known as repeated or secondary reflections. Also search multiples AND elastic waves. Added to Thesaurus in 1998. |
| multiples | |
|---|---|
| SN | Not a valid term for GeoRef. As of 1998, use multiple reflections or another more specific term as applicable. |
| multispectral analysis | |
|---|---|
| UF | multispectral methods |
| RT | analysis |
| mosaics | |
| remote sensing | |
| space photography | |
| multispectral scanner | |
| thematic mapper | |
| telemetry | |
| SPOT | |
| SN | Before 1978, search multispectral AND analysis. |
| multispectral methods | |
|---|---|
| USE | multispectral analysis |
| multispectral scanner | |
|---|---|
| RT | airborne methods |
| AVIRIS | |
| digital cartography | |
| geophysical methods | |
| geophysical surveys | |
| instruments | |
| Landsat | |
| mosaics | |
| multispectral analysis | |
| radar methods | |
| remote sensing | |
| SAR | |
| satellite methods | |
| SLAR | |
| thematic mapper | |
| Thermal Infrared Multispectral Scanner | |
| SN | Sometimes abbreviated as MSS. Added to Thesaurus in 1989. |
| Multituberculata | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Multituberculata | |
| SN | Order. |
| multivariate analysis | |
|---|---|
| BT | statistical analysis |
| .multivariate analysis | |
| RT | analysis |
| bivariate analysis | |
| univariate analysis | |
| Multnomah County Oregon | |
|---|---|
| BT | United States |
| .Oregon | |
| ..Multnomah County Oregon | |
| NT | Portland Oregon |
| SN | NW Oregon. |
| Mulwiya River | |
|---|---|
| USE | Moulouya River |
| Munchberg Gneiss Massif | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Bavaria Germany | |
| ....Munchberg Gneiss Massif | |
| RT | Fichtelgebirge |
| SN | In Fichtelgebirge area in NE Bavaria. Also search Munchberg Gneiss. |
| Munchen Germany | |
|---|---|
| USE | Munich Germany |
| Mundrabilla Meteorite | |
|---|---|
| BT | meteorites |
| .iron meteorites | |
| ..Mundrabilla Meteorite | |
| RT | Australia |
| Western Australia | |
| Nullarbor Plain | |
| SN | Impact in SE Western Australia. |
| Munich Germany | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Bavaria Germany | |
| ....Upper Bavaria Germany | |
| .....Munich Germany | |
| UF | Munchen Germany |
| SN | City in S Bavaria. |
| Munster Germany | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...North Rhine-Westphalia Germany | |
| ....Munster Germany | |
| UF | Muenster in Westfalen Germany |
| RT | Munsterland |
| SN | City in N North Rhine-Westphalia. Before 1993, also search Muenster in combination with Germany. |
| Munsterland | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...North Rhine-Westphalia Germany | |
| ....Munsterland | |
| UF | Muensterland |
| RT | Munster Germany |
| SN | Area around Munster in N North Rhine-Westphalia. |
| Muntenia | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Romania | |
| ...Walachia | |
| ....Muntenia | |
| SN | Region and former province in E Walachia, S Romania. |
| Muntii Metalici | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Romania | |
| ...Transylvania | |
| ....Muntii Metalici | |
| RT | Apuseni Mountains |
| SN | Metal Mountains. S part of Apuseni Mountains in W central Romania. |
| muong nong-type tektites | |
|---|---|
| BT | tektites |
| .muong nong-type tektites | |
| SN | Also search muong nong. |
| Mural Limestone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Lower Cretaceous | |
| .....Mural Limestone | |
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Comanchean | |
| .....Mural Limestone | |
| RT | Arizona |
| Bisbee Group | |
| SN | In Bisbee Group. Overlies Morita Formation; underlies Cintura Formation. SE Arizona. This term has multiple hierarchies. Added to Thesaurus in 1989. |
| Murchison Meteorite | |
|---|---|
| BT | meteorites |
| .stony meteorites | |
| ..chondrites | |
| ...carbonaceous chondrites | |
| ....CM chondrites | |
| .....Murchison Meteorite | |
| RT | Australia |
| Victoria Australia | |
| SN | Impact at Murchison, Victoria. Before 1981, also search Murchison AND meteorites. Added to Thesaurus in 1981. |
| Murcia region | |
|---|---|
| SN | No longer a valid term for GeoRef. See its provinces, Albacete Spain and Murcia Spain. |
| Murcia Spain | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Iberian Peninsula | |
| ...Spain | |
| ....Murcia Spain | |
| NT | Caravaca Spain |
| Jumilla Spain | |
| SN | Refers only to the autonomous community and its coextensive province in SE Spain. From 1981-1993, also search Murcia Province and Spain. |
| Mures Romania | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Romania | |
| ...Transylvania | |
| ....Mures Romania | |
| NT | Ditrau Romania |
| Gurghiu Romania | |
| SN | County in N central Romania. |
| Murgab Basin | |
|---|---|
| BT | Asia |
| .Murgab Basin | |
| UF | Murghab (Basin) |
| RT | Afghanistan |
| Turkmenia | |
| SN | River basin. Also search Murgab. Indexed with Afghanistan and/or Turkmenia as applicable. |
| Murge | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Apulia Italy | |
| ....Murge | |
| SN | Plateau region SW of Bari near the heel of the Italian boot. |
| Murghab (Basin) | |
|---|---|
| USE | Murgab Basin |
| muriatic acid | |
|---|---|
| USE | hydrochloric acid |
| Muricacea | |
|---|---|
| BT | Invertebrata |
| .Mollusca | |
| ..Gastropoda | |
| ...Muricacea | |
| Muridae | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Rodentia | |
| .......Myomorpha | |
| ........Muridae | |
| SN | Family. |
| Murmansk Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Murmansk Russian Federation | |
| BT | Europe |
| .Murmansk Russian Federation | |
| NT | Kola Russian Federation |
| Lovozero Massif | |
| Lovozero Russian Federation | |
| Monchegorsk Russian Federation | |
| Pechenga | |
| RT | Lapland |
| Imandra | |
| SN | Oblast including the city on the Arctic Ocean in extreme NW European Russian Federation. Before 1993, Murmansk Russian Republic was also used. This term has multiple hierarchies. |
| Muro Group | |
|---|---|
| RT | Cretaceous |
| Japan | |
| K-T boundary | |
| Tertiary | |
| SN | Indexed with age as applicable. |
| Murphy Marble | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Cambrian | |
| ....Lower Cambrian | |
| .....Murphy Marble | |
| RT | North Carolina |
| Georgia | |
| Tennessee | |
| SN | Sequence (ascending) is Valleytown Formation, Murphy Marble, Andrews Schist, and Nottely Quartzite. N Georgia, W North Carolina and E Tennessee. |
| Murray Basin | |
|---|---|
| RT | Australia |
| Kanmantoo Group | |
| New South Wales Australia | |
| South Australia | |
| Victoria Australia | |
| SN | River basin in SE Australia. Also search Murray AND basin. Indexed with states as applicable. |
| Murray County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Murray County Georgia | |
| SN | NW Georgia. |
| Murray County Minnesota | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Murray County Minnesota | |
| SN | SW Minnesota. |
| Murray County Oklahoma | |
|---|---|
| BT | United States |
| .Oklahoma | |
| ..Murray County Oklahoma | |
| RT | Arbuckle Mountains |
| SN | S Oklahoma. |
| Murray fracture zone | |
|---|---|
| BT | Pacific Ocean |
| .North Pacific | |
| ..Northeast Pacific | |
| ...Murray fracture zone | |
| UF | Murray Seascarp |
| SN | NE of Hawaii. Also search Murray AND fracture zone. This term has multiple hierarchies. |
| Murray Meteorite | |
|---|---|
| BT | meteorites |
| .stony meteorites | |
| ..chondrites | |
| ...carbonaceous chondrites | |
| ....CM chondrites | |
| .....Murray Meteorite | |
| RT | Kentucky |
| SN | Impact in Calloway County, Kentucky. Before 1981, also search Murray AND meteorites. Added to Thesaurus in 1981. |
| Murray River | |
|---|---|
| RT | Australia |
| New South Wales Australia | |
| South Australia | |
| Victoria Australia | |
| SN | The major river of Australia. It rises in E Victoria and flows NW and then S into Encounter Bay on the Indian Ocean. Also search Murray. Indexed with states as applicable. |
| Murray Seascarp | |
|---|---|
| USE | Murray fracture zone |
| Murrumbidgee River | |
|---|---|
| BT | Australasia |
| .Australia | |
| ..New South Wales Australia | |
| ...Murrumbidgee River | |
| SN | Flows W from Great Dividing Range near Canberra to join Murray River in S. |
| Murrumbidgee Valley | |
|---|---|
| BT | Australasia |
| .Australia | |
| ..New South Wales Australia | |
| ...Murrumbidgee Valley | |
| SN | River valley in S New South Wales. |
| Mururoa Atoll | |
|---|---|
| BT | Oceania |
| .Polynesia | |
| ..French Polynesia | |
| ...Tuamotu Islands | |
| ....Mururoa Atoll | |
| Murzuk Basin | |
|---|---|
| BT | Africa |
| .North Africa | |
| ..Libya | |
| ...Murzuk Basin | |
| UF | Murzuq Basin |
| SN | Dune region in SW Libya. |
| Murzuq Basin | |
|---|---|
| USE | Murzuk Basin |
| Musabani copper mines | |
|---|---|
| USE | Mosaboni Mines |
| Musashino Japan | |
|---|---|
| BT | nshu |
| .Tokyo Japan | |
| ..Musashino Japan | |
| SN | City in Tokyo Prefecture, central Honshu. |
| Muscatine County Iowa | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Muscatine County Iowa | |
| Muschelkalk | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Triassic | |
| ....Middle Triassic | |
| .....Muschelkalk | |
| SN | Europe. |
| Musci | |
|---|---|
| BT | Plantae |
| .Bryophyta | |
| ..Musci | |
| NT | Sphagnum |
| muscles | |
|---|---|
| RT | anatomy |
| biomechanics | |
| extremities | |
| jaws | |
| morphology | |
| physiology | |
| skeletons | |
| wings | |
| SN | Added to Thesaurus in 1993. |
| Muscogee County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Muscogee County Georgia | |
| NT | Columbus Georgia |
| SN | W Georgia. |
| muscovite granite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..granites | |
| ...muscovite granite | |
| muscovite schist | |
|---|---|
| BT | metamorphic rocks |
| .schists | |
| ..muscovite schist | |
| SN | Added to Thesaurus in 1981. |
| muscovitization | |
|---|---|
| BT | metasomatism |
| .muscovitization | |
| RT | processes |
| alteration | |
| muscovite | |
| SN | Added to Thesaurus in 1989. |
| museums | |
|---|---|
| RT | academic institutions |
| American Museum of Natural History | |
| associations | |
| British Museum | |
| catalogs | |
| collections | |
| curation | |
| education | |
| exhibits | |
| geology | |
| Smithsonian Institution | |
| organization | |
| survey organizations | |
| SN | Used for papers discussing the functioning of a geology museum and/or its history. Indexed with with name of museum in original language. |
| Musgrave Ranges | |
|---|---|
| BT | Australasia |
| .Australia | |
| ..Musgrave Ranges | |
| RT | South Australia |
| Northern Territory Australia | |
| SN | Also search Musgrave. Indexed with Australian states or territories as applicable. |
| Mushabani copper mines | |
|---|---|
| USE | Mosaboni Mines |
| Mushan Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Miocene | |
| .....Mushan Formation | |
| RT | Taiwan |
| Taiwan Strait | |
| SN | In oil and coal-bearing formations of W Taiwan which extend into the Taiwan Strait. |
| Muskegon County Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Lower Peninsula | |
| ...Muskegon County Michigan | |
| muskegs | |
|---|---|
| BT | mires |
| .bogs | |
| ..muskegs | |
| RT | geomorphology |
| peatlands | |
| paludal environment | |
| SN | Added to Thesaurus in 1985. |
| Muskingum County Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Muskingum County Ohio | |
| Muskogee County Oklahoma | |
|---|---|
| BT | United States |
| .Oklahoma | |
| ..Muskogee County Oklahoma | |
| SN | E Oklahoma. |
| Muskoka District Ontario | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Ontario | |
| ...Muskoka District Ontario | |
| Muskox Intrusion | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..Mackenzie District Northwest Territories | |
| ...Muskox Intrusion | |
| SN | In Mackenzie District. This term has multiple hierarchies. |
| Musselshell County Montana | |
|---|---|
| BT | United States |
| .Montana | |
| ..Musselshell County Montana | |
| Mussoorie India | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Uttar Pradesh India | |
| ....Mussoorie India | |
| SN | Hill station and sanitarium in N Uttar Pradesh, N central India. |
| Mussoorie Syncline | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Uttar Pradesh India | |
| ....Mussoorie Syncline | |
| RT | Himalayas |
| SN | N Uttar Pradesh, N central India. Added to Thesaurus in 1989. |
| Mustang Island | |
|---|---|
| RT | Nueces County Texas |
| SN | In Neuces County between Corpus Christi Bay and the Gulf of Mexico. Indexed with county or region as applicable. |
| Mustelidae | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Carnivora | |
| .......Fissipeda | |
| ........Mustelidae | |
| SN | Family. |
| Muth Quartzite | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Devonian | |
| ....Muth Quartzite | |
| RT | India |
| Uttar Pradesh India | |
| Jammu and Kashmir | |
| SN | Middle to Upper Devonian. Includes a thick succession of snow-white to greenish quartzites. |
| Muyun-Kum | |
|---|---|
| USE | Muyunkum |
| Muyunkum | |
|---|---|
| BT | Commonwealth of Independent States |
| .Kazakhstan | |
| ..Muyunkum | |
| UF | Muyun-Kum |
| SN | Sandy desert in Dzhambul Oblast, S of the Chu River near Kyrgyzstan border. This term has multiple hierarchies. |
| MVT-type deposits | |
|---|---|
| USE | mississippi valley-type deposits |
| MWD | |
|---|---|
| SN | Not a valid term for GeoRef. See measurement-while-drilling if applicable. |
| Myanmar | |
|---|---|
| USE | Burma |
| mylonites | |
|---|---|
| BT | metamorphic rocks |
| .mylonites | |
| NT | blastomylonite |
| pseudotachylite | |
| ultramylonite | |
| RT | shear zones |
| mylonitization | |
|---|---|
| RT | deformation |
| faults | |
| phyllonitization | |
| Myodocopida | |
|---|---|
| BT | Invertebrata |
| .Arthropoda | |
| ..Mandibulata | |
| ...Crustacea | |
| ....Ostracoda | |
| .....Myodocopida | |
| NT | Cladocopina |
| Entomozocopina | |
| Myodocopina | |
| RT | microfossils |
| SN | Order. Indexed with microfossils if applicable. |
| Myodocopina | |
|---|---|
| BT | Invertebrata |
| .Arthropoda | |
| ..Mandibulata | |
| ...Crustacea | |
| ....Ostracoda | |
| .....Myodocopida | |
| ......Myodocopina | |
| RT | microfossils |
| SN | Suborder. Indexed with microfossils if applicable. |
| Myoko Mountain | |
|---|---|
| BT | nshu |
| .Niigata Japan | |
| ..Myoko Mountain | |
| UF | Myoko Volcano |
| Myoko-san | |
| Myoko-zan | |
| RT | volcanoes |
| SN | W central Honshu. |
| Myoko Volcano | |
|---|---|
| USE | Myoko Mountain |
| Myoko-san | |
|---|---|
| USE | Myoko Mountain |
| Myoko-zan | |
|---|---|
| USE | Myoko Mountain |
| Myomorpha | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Rodentia | |
| .......Myomorpha | |
| NT | Arvicolidae |
| Cricetidae | |
| Eomyidae | |
| Gliridae | |
| Muridae | |
| SN | Suborder. |
| Myophoria | |
|---|---|
| BT | Invertebrata |
| .Mollusca | |
| ..Bivalvia | |
| ...Myophoria | |
| SN | Genus. |
| Myriapoda | |
|---|---|
| BT | Invertebrata |
| .Arthropoda | |
| ..Mandibulata | |
| ...Myriapoda | |
| SN | Includes Archipolypoda, Chilopoda, Diploda, Pauropoda, and Symphyla. |
| Myrica | |
|---|---|
| BT | Plantae |
| .Spermatophyta | |
| ..Angiospermae | |
| ...Dicotyledoneae | |
| ....Myrica | |
| SN | Genus. |
| myrmekite | |
|---|---|
| BT | silicates |
| .framework silicates | |
| ..feldspar group | |
| ...plagioclase | |
| ....myrmekite | |
| RT | quartz |
| SN | An intergrowth of vermicular quartz in plagioclase feldspar. |
| Mysore India | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Karnataka India | |
| ....Mysore India | |
| SN | City in Karnataka. Before 1989, Mysore was also used for the former state on the Arabian Sea in SW India. As of 1989, use Karnataka for the state. |
| Mystery Cave | |
|---|---|
| RT | Fillmore County Minnesota |
| Minnesota | |
| New York | |
| Sullivan County New York | |
| SN | Cave in Fillmore County, SE Minnesota and also in Sullivan County, SE New York. Indexed with states and counties as applicable. Added to Thesaurus in 1989. |
| Mytilus | |
|---|---|
| BT | Invertebrata |
| .Mollusca | |
| ..Bivalvia | |
| ...Mytilus | |
| NT | Mytilus edulis |
| SN | Genus. |
| Mytilus edulis | |
|---|---|
| BT | Invertebrata |
| .Mollusca | |
| ..Bivalvia | |
| ...Mytilus | |
| ....Mytilus edulis | |
| Myxomycetes | |
|---|---|
| BT | fungi |
| .Myxomycetes | |
| Myzostomia | |
|---|---|
| BT | Invertebrata |
| .Vermes | |
| ..Myzostomia | |