Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Am  | |
|---|---|
| USE | americium |
| Am-241 | |
|---|---|
| BT | isotopes |
| .radioactive isotopes | |
| ..Am-241 | |
| BT | metals |
| .actinides | |
| ..americium | |
| ...Am-241 | |
| SN | This term has multiple hierarchies. |
| Amadeus Basin | |
|---|---|
| BT | Australasia |
| .Australia | |
| ..Amadeus Basin | |
| RT | Northern Territory Australia |
| Pacoota Sandstone | |
| Western Australia | |
| SN | SW Northern Territory and W Western Australia. Indexed with states as applicable. |
| Amador County California | |
|---|---|
| BT | United States |
| .California | |
| ..Amador County California | |
| SN | E California. |
| Amagase Japan | |
|---|---|
| BT | nshu |
| .Kyoto Japan | |
| ..Amagase Japan | |
| SN | Village S of Osaka. |
| Amalthea Satellite | |
|---|---|
| RT | icy satellites |
| Jupiter | |
| satellites | |
| Voyager Program | |
| SN | One of the satellites of Jupiter. Before 1989, also search Amalthea AND Jupiter. Added to Thesaurus in 1989. |
| Amami | |
|---|---|
| USE | Oshima |
| Amami Gunto | |
|---|---|
| USE | Oshima |
| Amami-O-shima | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Japan | |
| ...Kyushu | |
| ....Kagoshima Japan | |
| .....Oshima | |
| ......Amami-O-shima | |
| RT | O-shima |
| Oshima Peninsula | |
| SN | Largest island in Oshima (Amami Gunto) island group, SW of Kyushu. This term has multiple hierarchies. |
| Amanos Mountains | |
|---|---|
| BT | Asia |
| .Middle East | |
| ..Turkey | |
| ...Amanos Mountains | |
| UF | Alma Dag |
| Gavur Mountains | |
| SN | Along SE Gulf of Alexandretta in SE Anatolia. |
| Amapa Brazil | |
|---|---|
| BT | South America |
| .Brazil | |
| ..Amapa Brazil | |
| NT | Serra do Navio Brazil |
| SN | State on French Guiana border. |
| Amargosa Desert | |
|---|---|
| BT | United States |
| .Amargosa Desert | |
| RT | California |
| Nevada | |
| SN | Indexed with California and/or Nevada as applicable. |
| amargosite | |
|---|---|
| USE | bentonite |
| Amarillo Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Potter County Texas | |
| ...Amarillo Texas | |
| SN | City, N Texas Panhandle. |
| Amarjola | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Bihar India | |
| ....Amarjola | |
| RT | Rajmahal Hills |
| SN | Region in the Rajmahal Hills in E Bihar, E India. |
| Amasra Basin | |
|---|---|
| BT | Asia |
| .Middle East | |
| ..Turkey | |
| ...Amasra Basin | |
| RT | Anatolia |
| coal fields | |
| SN | Coal basin in NW Anatolia. |
| Amasra Turkey | |
|---|---|
| BT | Asia |
| .Middle East | |
| ..Turkey | |
| ...Zonguldak Turkey | |
| ....Amasra Turkey | |
| SN | Town on the Black Sea in NW Anatolia. |
| Amazon Basin | |
|---|---|
| BT | South America |
| .Amazon Basin | |
| UF | Amazon region |
| RT | Brazil |
| Bolivia | |
| Peru | |
| Colombia | |
| Ecuador | |
| Venezuela | |
| SN | River drainage basin. Before 1978, also search Amazon. Indexed with countries as applicable. |
| Amazon region | |
|---|---|
| USE | Amazon Basin |
| Amazon River | |
|---|---|
| BT | South America |
| .Amazon River | |
| UF | Rio Amazonas |
| RT | Brazil |
| Peru | |
| Colombia | |
| Marajo | |
| SN | Largest river in the world if measured by volume of water carried. Rises in 2 major headstreams in the Peruvian Andes flowing N and then E across N Brazil into the Atlantic Ocean. Before 1978, also search Amazon. Indexed with countries as applicable. |
| Amazonas | |
|---|---|
| SN | No longer a valid term for GeoRef. See Amazonas Brazil, Amazonas Colombia, Amazonas Peru or Amazonas Venezuela. For Rio Amazonas, use Amazon River. |
| Amazonas Brazil | |
|---|---|
| BT | South America |
| .Brazil | |
| ..Amazonas Brazil | |
| RT | Orinoco River |
| SN | State in NW Brazil. |
| Amazonas Colombia | |
|---|---|
| BT | South America |
| .Colombia | |
| ..Amazonas Colombia | |
| RT | Orinoco River |
| SN | Commissary in SE Colombia. |
| Amazonas Peru | |
|---|---|
| BT | South America |
| .Peru | |
| ..Amazonas Peru | |
| SN | Department in N Peru. |
| Amazonas Venezuela | |
|---|---|
| BT | South America |
| .Venezuela | |
| ..Amazonas Venezuela | |
| RT | Orinoco River |
| Rio Negro | |
| SN | State in S Venezuela. |
| Amazonian | |
|---|---|
| RT | Mars |
| SN | Youngest system of three in the Martian stratigraphic column. Added to Thesaurus in 1993. |
| Amazonian Orogeny | |
|---|---|
| USE | Transamazonian Orogeny |
| Amazonian Shield | |
|---|---|
| USE | Brazilian Shield |
| Amazonis Planitia | |
|---|---|
| BT | Mars |
| .Amazonis Planitia | |
| SN | Low plain. For references to Amazonis albedo feature, also search Amazonis. |
| amazonite | |
|---|---|
| BT | silicates |
| .framework silicates | |
| ..feldspar group | |
| ...alkali feldspar | |
| ....amazonite | |
| UF | amazonstone |
| RT | aluminosilicates |
| microcline | |
| amazonstone | |
|---|---|
| USE | amazonite |
| Amba Dongar | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Gujarat India | |
| ....Amba Dongar | |
| SN | Region in Gujarat, W India. |
| amber | |
|---|---|
| BT | organic minerals |
| .amber | |
| UF | bernstein |
| RT | resins |
| amber mica | |
|---|---|
| USE | phlogopite |
| Ambin Massif | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Savoie France | |
| ....Ambin Massif | |
| SN | SE France. |
| amblygonite | |
|---|---|
| BT | phosphates |
| .amblygonite | |
| UF | hebronite |
| RT | lithium |
| montebrasite | |
| Amblypoda | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Amblypoda | |
| NT | Dinocerata |
| Pantodonta | |
| Pyrotheria | |
| Xenungulata | |
| RT | Ungulata |
| SN | Order. |
| Ambre Mountain | |
|---|---|
| BT | Africa |
| .Madagascar | |
| ..Ambre Mountain | |
| SN | N Madagascar. This term has multiple hierarchies. |
| Ambrosia Lake | |
|---|---|
| BT | United States |
| .New Mexico | |
| ..McKinley County New Mexico | |
| ...Ambrosia Lake | |
| Ambrosia Lake District | |
|---|---|
| USE | Ambrosia Lake mining district |
| Ambrosia Lake mining district | |
|---|---|
| BT | United States |
| .New Mexico | |
| ..McKinley County New Mexico | |
| ...Ambrosia Lake mining district | |
| UF | Ambrosia Lake District |
| RT | mines |
| uranium ores | |
| Grants mineral belt | |
| SN | Uranium-mining district in New Mexico. Added to Thesaurus in 1993. |
| Amchitka Island | |
|---|---|
| BT | United States |
| .Alaska | |
| ..Southwestern Alaska | |
| ...Aleutian Islands | |
| ....Amchitka Island | |
| NT | Cannikin Alaska |
| SN | In center of Aleutian Islands SW of Alaska Peninsula. Also search Amchitka. |
| AMCOR | |
|---|---|
| UF | Atlantic Margin Coring Project |
| RT | United States |
| oceanography | |
| continental margin | |
| soil mechanics | |
| Atlantic Coastal Plain | |
| continental shelf | |
| continental slope | |
| cores | |
| marine drilling | |
| marine sediments | |
| North Atlantic | |
| offshore | |
| U. S. Geological Survey | |
| SN | Acronym. Added to Thesaurus in 1985. |
| Ameki Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....Ameki Formation | |
| RT | Nigeria |
| SN | Added to Thesaurus in 1989. |
| Amelia | |
|---|---|
| RT | Virginia |
| SN | Mineral bearing region in Amelia County in S central Virginia. Indexed with county and state as applicable. |
| Amelia County Virginia | |
|---|---|
| BT | United States |
| .Virginia | |
| ..Amelia County Virginia | |
| Amerasia Basin | |
|---|---|
| BT | Arctic Ocean |
| .Amerasia Basin | |
| RT | Canada Basin |
| Lomonosov Ridge | |
| Makarov Basin | |
| SN | Arctic Ocean offshore Alaska, Canada and Greenland. Separated from the Eurasia Basin by the Lomonosov Ridge. The Canada and Makarov basins are major sub-basins. Also search Amerasian Basin. Added to Thesaurus in 1995. |
| America | |
|---|---|
| RT | Central America |
| Latin America | |
| North America | |
| South America | |
| West Indies | |
| SN | Includes all of the Americas. Added to Thesaurus in 1981. |
| American Association of Petroleum Geologists | |
|---|---|
| USE | AAPG |
| American Geological Institute | |
|---|---|
| USE | AGI |
| American Geophysical Union | |
|---|---|
| USE | AGU |
| American Museum of Natural History | |
|---|---|
| RT | museums |
| New York | |
| SN | In New York City. Not to be indexed with geography. |
| American River | |
|---|---|
| BT | United States |
| .California | |
| ..American River | |
| SN | Central California. Joins Sacramento River at Sacramento. Added to Thesaurus in 1985. |
| American Samoa | |
|---|---|
| USE | Samoa |
| americium | |
|---|---|
| BT | metals |
| .actinides | |
| ..americium | |
| NT | Am-241 |
| UF | Am |
| Americus Limestone Member | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Permian | |
| ....Americus Limestone Member | |
| RT | Oklahoma |
| Nebraska | |
| Kansas | |
| SN | Of Foraker Limestone. E Kansas, SE Nebraska and central N Oklahoma. |
| Ames Limestone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Upper Pennsylvanian | |
| ......Ames Limestone | |
| RT | Kentucky |
| Pennsylvania | |
| Maryland | |
| West Virginia | |
| Conemaugh Group | |
| SN | Of Conemaugh Group. E Kentucky, SW Maryland, E Ohio, SW Pennsylvania, and N West Virginia. |
| amethyst | |
|---|---|
| BT | silicates |
| .framework silicates | |
| ..silica minerals | |
| ...amethyst | |
| RT | gems |
| quartz | |
| corundum | |
| SN | Variety of quartz. |
| Amherst County Virginia | |
|---|---|
| BT | United States |
| .Virginia | |
| ..Amherst County Virginia | |
| Amiidae | |
|---|---|
| BT | lostei |
| .Amiidae | |
| SN | Family. |
| amino acids | |
|---|---|
| BT | organic compounds |
| .organic acids | |
| ..amino acids | |
| NT | alanine |
| aspartic acid | |
| glycine | |
| isoleucine | |
| RT | acids |
| fatty acids | |
| aminostratigraphy | |
| peptides | |
| proteins | |
| racemization | |
| aminostratigraphy | |
|---|---|
| RT | amino acids |
| biostratigraphy | |
| epimerization | |
| racemization | |
| stratigraphy | |
| SN | For dating method, see racemization. |
| Amisk Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Archean | |
| ...Amisk Group | |
| RT | Manitoba |
| SN | Considered as oldest rocks in Flin Flon Belt. Overlain by Missi Group. |
| Amisk Lake | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..Saskatchewan | |
| ...Amisk Lake | |
| SN | Near Manitoba border in NE Saskatchewan. |
| Amite County Mississippi | |
|---|---|
| BT | United States |
| .Mississippi | |
| ..Amite County Mississippi | |
| Amite River | |
|---|---|
| BT | United States |
| .Amite River | |
| RT | Louisiana |
| Mississippi | |
| SN | Rises in SW Mississippi and flows S and E into Lake Maurepas in SE Louisiana. Indexed with states as applicable. |
| Amitsoq Gneiss | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Archean | |
| ...upper Archean | |
| ....Amitsoq Gneiss | |
| RT | Greenland |
| SN | W Greenland. Added to Thesaurus in 1989. |
| Ammobaculites | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Textulariina | |
| ....Lituolacea | |
| .....Ammobaculites | |
| RT | microfossils |
| SN | Genus. Indexed with microfossils if applicable. |
| Ammodiscacea | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Textulariina | |
| ....Ammodiscacea | |
| NT | Ammodiscidae |
| Astrorhizidae | |
| RT | microfossils |
| SN | Indexed with microfossils if applicable. |
| Ammodiscidae | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Textulariina | |
| ....Ammodiscacea | |
| .....Ammodiscidae | |
| RT | microfossils |
| SN | Family. Indexed with microfossils if applicable. |
| Ammonia | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Rotaliina | |
| ....Rotaliacea | |
| .....Ammonia | |
| NT | Ammonia beccarii |
| RT | microfossils |
| ammonia compound | |
| SN | Genus. Indexed with microfossils if applicable. |
| Ammonia beccarii | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Rotaliina | |
| ....Rotaliacea | |
| .....Ammonia | |
| ......Ammonia beccarii | |
| RT | microfossils |
| SN | Species. Indexed with microfossils if applicable. |
| ammonia compound | |
|---|---|
| RT | Ammonia |
| ammonium | |
| ammonium ion | |
| geochemistry | |
| nitrification | |
| SN | Use to distinguish from fossil genus, Ammonia. Before 1978, also search ammonia. |
| Ammonites | |
|---|---|
| BT | Invertebrata |
| .Mollusca | |
| ..Cephalopoda | |
| ...Tetrabranchiata | |
| ....Ammonoidea | |
| .....Ammonites | |
| RT | aptychi |
| Ceratites | |
| ammonium | |
|---|---|
| RT | ammonia compound |
| geochemistry | |
| nitrification | |
| ammonium ion | |
|---|---|
| RT | ammonia compound |
| geochemistry | |
| ions | |
| SN | Added to Thesaurus in 1985. |
| Ammonoosuc Volcanics | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Middle Ordovician | |
| .....Ammonoosuc Volcanics | |
| RT | Vermont |
| Massachusetts | |
| New Hampshire | |
| SN | NW New Hampshire, N central Massachusetts, and Vermont. Added to Thesaurus in 1985. |
| amorphous materials | |
|---|---|
| RT | Andisols |
| Andosols | |
| clay minerals | |
| crystallinity | |
| glass materials | |
| glasses | |
| imogolite | |
| materials | |
| opal-A | |
| order-disorder | |
| shirasu | |
| shungite | |
| volcanic ash | |
| weathering | |
| SN | General term for all materials not crystalline. Descriptive, not geologic term. Before 1978, also search amorphous AND materials. |
| amosite | |
|---|---|
| BT | silicates |
| .chain silicates | |
| ..amphibole group | |
| ...clinoamphibole | |
| ....amosite | |
| RT | asbestos |
| anthophyllite | |
| gedrite | |
| SN | Commercial term. |
| Amparo Brazil | |
|---|---|
| BT | South America |
| .Brazil | |
| ..Sao Paulo Brazil | |
| ...Amparo Brazil | |
| SN | City in E Sao Paulo State. |
| Amphibia | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Amphibia | |
| NT | Labyrinthodontia |
| Lepospondyli | |
| Lissamphibia | |
| RT | nests |
| SN | Class. |
| amphibole | |
|---|---|
| USE | amphibole group |
| amphibole group | |
|---|---|
| BT | silicates |
| .chain silicates | |
| ..amphibole group | |
| NT | alkalic amphibole |
| clinoamphibole | |
| orthoamphibole | |
| UF | amphibole |
| RT | asbestos |
| amphibolitization | |
| jade | |
| amphibolite facies | |
|---|---|
| BT | facies |
| .amphibolite facies | |
| RT | metamorphic rocks |
| epidote-amphibolite facies | |
| amphibolites | |
|---|---|
| BT | metamorphic rocks |
| .amphibolites | |
| NT | orthoamphibolite |
| para-amphibolite | |
| RT | amphibolitization |
| amphibolitization | |
|---|---|
| BT | metasomatism |
| .amphibolitization | |
| UF | amphibolization |
| RT | processes |
| amphibole group | |
| alteration | |
| amphibolites | |
| SN | Added to Thesaurus in 1989. |
| amphibolization | |
|---|---|
| USE | amphibolitization |
| Amphineura | |
|---|---|
| SN | Not a valid term for GeoRef. Use Aplacophora or Polyplacophora. |
| Amphipora | |
|---|---|
| BT | Invertebrata |
| .Coelenterata | |
| ..Stromatoporoidea | |
| ...Amphipora | |
| SN | Genus. |
| Amphistegina | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Rotaliina | |
| ....Orbitoidacea | |
| .....Amphistegina | |
| RT | microfossils |
| SN | Genus. Indexed with microfossils if applicable. |
| ampian Highlands | |
|---|---|
| NT | Cairngorm Mountains |
| amplification | |
|---|---|
| SN | As of 1995, not a valid term for GeoRef. Use wave amplification if applicable. |
| amplification, wave | |
|---|---|
| USE | wave amplification |
| amplitude | |
|---|---|
| RT | AVO methods |
| elastic waves | |
| Hilbert transformations | |
| seismic intensity | |
| seismology | |
| SN | Not to be used to indicate abundance. Strictly for use in seismology. |
| amplitude distortion | |
|---|---|
| RT | distortion |
| elastic waves | |
| seismology | |
| SN | Added to Thesaurus in 1981. |
| amplitude variation with offset | |
|---|---|
| USE | AVO methods |
| amplitude-versus-offset analysis | |
|---|---|
| USE | AVO methods |
| Ampurdan | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Iberian Peninsula | |
| ...Spain | |
| ....Catalonia Spain | |
| .....Gerona Spain | |
| ......Ampurdan | |
| SN | Coastal plain in Catalonia. |
| AMRAP | |
|---|---|
| UF | Alaska Mineral Resource Assessment Program |
| RT | mineral resources |
| Alaska | |
| U. S. Geological Survey | |
| economic geology | |
| SN | Acronym. Added to Thesaurus in 1995. |
| AMS C-14 dating | |
|---|---|
| SN | Not a valid term for GeoRef. As of 1993, use C-14 and accelerator mass spectroscopy and absolute age. |
| Amsden Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Amsden Formation | |
| RT | Mississippian |
| Pennsylvanian | |
| Wyoming | |
| Montana | |
| North Dakota | |
| SN | In Montchauve Group. Montana, Wyoming and North Dakota. Added to Thesaurus in 1985. |
| Amsterdam Island | |
|---|---|
| BT | Indian Ocean Islands |
| .Amsterdam Island | |
| SN | Dependency of Madagascar 2800 miles off SE African coast. |
| Amsterdam Netherlands | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..Netherlands | |
| ...Amsterdam Netherlands | |
| SN | City on Ijsselmeer (former Zuider Zee). North Holland. |
| Amu Darya | |
|---|---|
| BT | Asia |
| .Amu Darya | |
| UF | Oxus |
| RT | Afghanistan |
| Tajikistan | |
| Amu Darya Basin | |
| Uzbekistan | |
| Surkhan Darya | |
| Turkmenia | |
| Vakhsh River | |
| SN | River which rises in Pamirs and flows into Aral Sea. Indexed with Afghanistan and former Soviet republics as applicable. |
| Amu Darya Basin | |
|---|---|
| BT | Asia |
| .Amu Darya Basin | |
| UF | Amu Darya Syneclise |
| RT | Afghanistan |
| Tajikistan | |
| Amu Darya | |
| Uzbekistan | |
| Turkmenia | |
| SN | River basin of the Amu Darya. Indexed with former Soviet republics and/or Afghanistan as applicable. Added to Thesaurus in 1989. |
| Amu Darya Syneclise | |
|---|---|
| USE | Amu Darya Basin |
| Amund Ringnes Island | |
|---|---|
| BT | Canada |
| .Northwest Territories | |
| ..Franklin District Northwest Territories | |
| ...Queen Elizabeth Islands | |
| ....Amund Ringnes Island | |
| SN | One of the Sverdrup Islands, Queen Elizabeth Islands in Franklin District. |
| Amur Basin | |
|---|---|
| BT | Asia |
| .Amur Basin | |
| RT | Russian Federation |
| Mongolia | |
| Amur region | |
| Inner Mongolia China | |
| Russian Far East | |
| SN | River basin covering an area including parts of Amur and Chita oblasts, and Khabarovsk region in the Russian Federation; parts of Inner Mongolia, and N China; and E Mongolia. Before 1981, also search Amur region. Indexed with Chinese provinces, Mongolia, |
| Amur region | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Amur region | |
| BT | Asia |
| .Amur region | |
| RT | Amur Basin |
| Baikal-Amur Railroad region | |
| Bureya Russian Federation | |
| Khabarovsk Russian Federation | |
| Stanovoy Range | |
| Udokan Series | |
| Zeya-Bureya Basin | |
| SN | SE Russian Federation. Larger than the oblast. This term has multiple hierarchies. Added to Thesaurus in 1981. |
| Amur River | |
|---|---|
| BT | Asia |
| .Amur River | |
| RT | Russian Federation |
| Inner Mongolia China | |
| Argun River | |
| Heilongjiang China | |
| SN | Formed at junction of the Shilka River and the Argun River. After serving as the boundary between N China and 2 oblasts of the Russian Federation, it flows NE across Khabarovsk region into the N end of the Tatar Strait. In China, the river is also called |
| Amur Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Amur Russian Federation | |
| BT | Asia |
| .Amur Russian Federation | |
| NT | Bureya Russian Federation |
| Zeya-Bureya Basin | |
| RT | Russian Far East |
| Transbaikalia | |
| Zeya River | |
| SN | Oblast. Before 1993, Amur Russian Republic was also used. This term has multiple hierarchies. |
| amygdules | |
|---|---|
| RT | agate |
| igneous rocks | |
| pebbles | |
| secondary minerals | |
| sediments | |
| SN | Includes use as a general term. Added to Thesaurus in 1989. |