Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
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. |