Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
At  | |
|---|---|
| USE | astatine |
| Ata Caldera | |
|---|---|
| RT | Japan |
| Kyushu | |
| Polynesia | |
| Tonga | |
| volcanoes | |
| SN | Volcanic caldera on southern Kyushu, Japan. Also a caldera on uninhabited island of Ata, S Tonga. Search in combination with Kyushu or with Tonga as applicable. Indexed with Kyushu or Tonga as applicable. |
| Atacama Chile | |
|---|---|
| BT | South America |
| .Chile | |
| ..Atacama Chile | |
| NT | Copiapo Chile |
| RT | Atacama Desert |
| Copiapo River | |
| Vaca Muerta Meteorite | |
| SN | Province in N central Chile. |
| Atacama Desert | |
|---|---|
| BT | South America |
| .Chile | |
| ..Atacama Desert | |
| RT | Puna |
| Antofagasta Chile | |
| Atacama Chile | |
| SN | N central part of country. Indexed with provinces as applicable. |
| atacamite | |
|---|---|
| BT | halides |
| .chlorides | |
| ..atacamite | |
| RT | paratacamite |
| Atascosa County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Atascosa County Texas | |
| SN | SW Texas. |
| Atasu Kazakhstan | |
|---|---|
| BT | Commonwealth of Independent States |
| .Kazakhstan | |
| ..Atasu Kazakhstan | |
| SN | Village in central Kazakhstan, NW of Lake Balkhash. This term has multiple hierarchies. |
| ataxite | |
|---|---|
| BT | meteorites |
| .iron meteorites | |
| ..ataxite | |
| NT | Campo del Cielo Meteorite |
| Warburton Meteorite | |
| SN | Added to Thesaurus in 1981. |
| Ataxophragmiidae | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Textulariina | |
| ....Lituolacea | |
| .....Ataxophragmiidae | |
| RT | microfossils |
| SN | Family. Indexed with microfossils if applicable. |
| Atbay | |
|---|---|
| USE | Red Sea Hills |
| Atchafalaya Bay | |
|---|---|
| BT | United States |
| .Louisiana | |
| ..Atchafalaya Bay | |
| RT | Gulf of Mexico |
| Belle Isle | |
| Gulf Coastal Plain | |
| Saint Mary Parish Louisiana | |
| Terrebonne Parish Louisiana | |
| SN | On the Gulf of Mexico off Saint Mary and Terrebonne parishes. |
| Atchafalaya River | |
|---|---|
| BT | United States |
| .Louisiana | |
| ..Atchafalaya River | |
| SN | S central Louisiana. Flows from Grand Lake N to Red River. Added to Thesaurus in 1985. |
| Atchison County Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..Atchison County Kansas | |
| NT | Atchison Kansas |
| SN | NE Kansas. |
| Atchison County Missouri | |
|---|---|
| BT | United States |
| .Missouri | |
| ..Atchison County Missouri | |
| SN | Extreme NW Missouri. |
| Atchison Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..Atchison County Kansas | |
| ...Atchison Kansas | |
| SN | City in NE Kansas. |
| Atdabanian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Cambrian | |
| ....Lower Cambrian | |
| .....Atdabanian | |
| SN | Russian Federation, Canada. Added to Thesaurus in 1989. |
| atectonic processes | |
|---|---|
| UF | nontectonics |
| RT | sedimentation |
| tectonics | |
| processes | |
| SN | Added to Thesaurus in 1981. |
| Atera Fault | |
|---|---|
| BT | nshu |
| .Gifu Japan | |
| ..Atera Fault | |
| SN | Gifu Prefecture in central Honshu. |
| Athabasca District | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..Athabasca District | |
| UF | Athabaska District |
| RT | Alberta |
| Saskatchewan | |
| Lake Athabasca | |
| Midwest Lake | |
| Midwest Lake Deposits | |
| SN | N Saskatchewan and Alberta. Indexed with Canadian provinces. Added to Thesaurus in 1981. |
| Athabasca Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Athabasca Formation | |
| RT | Saskatchewan |
| Churchill Province | |
| SN | Primarily an orthoquartzite. Outcrops over a large area S of Lake Athabasca in Churchill Province. Added to Thesaurus in 1981. |
| Athabasca Glacier | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..Alberta | |
| ...Athabasca Glacier | |
| UF | Athabaska Glacier |
| RT | Canadian Rocky Mountains |
| SN | In Rocky Mountains between Jasper and Banff national parks near the British Columbia border. |
| Athabasca Oil Sands | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..Alberta | |
| ...Athabasca Oil Sands | |
| UF | Athabaska Oil Sands |
| RT | Clearwater Formation |
| McMurray Formation | |
| SN | In E Alberta. One of the largest petroleum reservoirs in the world. Oil is found in the McMurray, Clearwater, and Grand Rapids formations. Added to Thesaurus in 1981. |
| Athabasca River | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..Alberta | |
| ...Athabasca River | |
| UF | Athabaska River |
| RT | Clearwater River |
| SN | Flows into Lake Athabasca. |
| Athabaska District | |
|---|---|
| USE | Athabasca District |
| Athabaska Glacier | |
|---|---|
| USE | Athabasca Glacier |
| Athabaska Oil Sands | |
|---|---|
| USE | Athabasca Oil Sands |
| Athabaska River | |
|---|---|
| USE | Athabasca River |
| Athens County Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Athens County Ohio | |
| NT | Athens Ohio |
| SN | SE Ohio. |
| Athens Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Clarke County Georgia | |
| ...Athens Georgia | |
| SN | City in NE Georgia. |
| Athens Greece | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Greece | |
| ...Sterea Ellas | |
| ....Attica Greece | |
| .....Athens Greece | |
| SN | City in central Greece. |
| Athens Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Athens County Ohio | |
| ...Athens Ohio | |
| SN | City in SE Ohio. |
| Athgarh Sandstone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Jurassic | |
| ....Athgarh Sandstone | |
| RT | India |
| upper Gondwana System | |
| SN | Sandstones of this formation are also grouped as part of Cuttack Stage. Part of Upper Gondwana sequence of the E coast. |
| Atikokan Ontario | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Ontario | |
| ...Rainy River District Ontario | |
| ....Atikokan Ontario | |
| RT | Eye-Dashwa Lakes Pluton |
| SN | Rainy River District, W Ontario. |
| ation#Mediterranean region#Melilla#Meseta#Navarre#North Pyrenean Fault#Ossa-More |
|---|
| Atkinson County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Atkinson County Georgia | |
| Atla Regio | |
|---|---|
| BT | Venus |
| .Aphrodite Terra | |
| ..Atla Regio | |
| SN | Broad volcanic upland dome, E Aphrodite Terra. |
| Atlanta Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Fulton County Georgia | |
| ...Atlanta Georgia | |
| SN | City in N central Georgia. |
| Atlantic | |
|---|---|
| BT | locene |
| .Atlantic | |
| SN | Used primarily in Europe for an interval of postglacial time following the Boreal and preceding the Subboreal. It corresponds to most of the Altithermal and the middle part of the Hypsithermal. |
| Atlantic Coast | |
|---|---|
| SN | Not a valid term for GeoRef. Search Atlantic Coast OR Atlantic Ocean in conjunction with appropriate country or state. See also Atlantic region. |
| Atlantic Coastal Plain | |
|---|---|
| BT | United States |
| .Atlantic Coastal Plain | |
| NT | Central Atlantic Coastal Plain |
| Southern Atlantic Coastal Plain | |
| RT | New York |
| Florida | |
| North Carolina | |
| Maryland | |
| Georgia | |
| AMCOR | |
| Massachusetts | |
| Fall Line | |
| Delaware | |
| Baltimore Canyon | |
| Carolina Bays | |
| Chesapeake Bay | |
| Connecticut | |
| Dunbarton Basin | |
| Lydonia Canyon | |
| Middendorf Formation | |
| Middle Atlantic Bight | |
| New Jersey | |
| New York Bight | |
| Outer Ban | |
| SN | As of 1993, restricted to U.S. Indexed with states as applicable. |
| Atlantic County New Jersey | |
|---|---|
| BT | United States |
| .New Jersey | |
| ..Atlantic County New Jersey | |
| RT | Great Bay |
| Pine Barrens | |
| SN | SE New Jersey. |
| Atlantic Margin Coring Project | |
|---|---|
| USE | AMCOR |
| Atlantic Ocean | |
|---|---|
| NT | East Atlantic |
| Equatorial Atlantic | |
| Mid-Atlantic Ridge | |
| North Atlantic | |
| Romanche fracture zone | |
| Romanche Trench | |
| South Atlantic | |
| West Atlantic | |
| RT | Antarctic Bottom Water |
| Antarctic Ocean | |
| Ascension Island | |
| Atlantic Ocean Islands | |
| Atlantic region | |
| Baffin Bay | |
| Blake-Bahama Formation | |
| Continental Offshore Stratigraphic Test | |
| Davis Strait | |
| Faeroe Islands | |
| Falkland Islands | |
| FAMOUS | |
| Gulf Stream | |
| Hare Bay | |
| Hatteras Form | |
| SN | Before 1981, many islands which are now included under Atlantic Ocean Islands were also included as narrower terms of Atlantic Ocean. For several others, the change was made in 1985. Also see Antarctic Ocean for S portion. |
| Atlantic Ocean Islands | |
|---|---|
| NT | Ascension Island |
| Azores | |
| Bermuda | |
| Bouvet Island | |
| Canary Islands | |
| Cape Verde Islands | |
| Faeroe Islands | |
| Falkland Islands | |
| Madeira | |
| Saint Paul Rocks | |
| Saint Pierre and Miquelon | |
| Sao Tome e Principe | |
| Shetland Islands | |
| South Georgia | |
| Tristan da Cunha | |
| RT | Atlantic Ocean |
| Denmark | |
| English Channel Islands | |
| Florida Keys | |
| Greenland | |
| Hebrides | |
| Iceland | |
| Ireland | |
| Isles Dernieres | |
| Lofoten Islands | |
| Long Island | |
| Los Islands | |
| Magdalen Islands | |
| Newfoundland Island | |
| Orkney Islands | |
| Outer Banks | |
| Saint Helena | |
| Scotia Sea Islands | |
| Solund I | |
| SN | This term is used for islands and island groups which could not easily be assigned to adjacent land areas. Before 1981, many of these islands and island groups were also narrower terms of Atlantic Ocean. Added to Thesaurus in 1981. |
| Atlantic region | |
|---|---|
| RT | Atlantic Ocean |
| Laurentia | |
| SN | An artificial term used to indicate the coastal region immediately adjacent to the Atlantic Ocean . Includes land and the immediate littoral zone. In the U.S. Atlantic Coastal Plain may be used. Added to Thesaurus in 1976. |
| Atlantic-type margins | |
|---|---|
| USE | passive margins |
| Atlantis | |
|---|---|
| RT | popular geology |
| SN | Legendary island or continent said to have been destroyed by a cataclysm. Added to Thesaurus in 1981. |
| Atlantis fracture zone | |
|---|---|
| BT | Atlantic Ocean |
| .North Atlantic | |
| ..Atlantis fracture zone | |
| RT | Mid-Atlantic Ridge |
| SN | Across the Mid-Atlantic Ridge in N Atlantic Ocean. Indexed with Mid-Atlantic Ridge as applicable. |
| Atlantis II | |
|---|---|
| BT | Atlantic Ocean |
| .North Atlantic | |
| ..Atlantis II | |
| SN | Seamounts off U.S. E coast roughly midway between Nova Scotia and Bermuda. |
| Atlantis II Deep | |
|---|---|
| BT | Indian Ocean |
| .Red Sea | |
| ..Atlantis II Deep | |
| RT | DSDP Site 226 |
| DSDP Site 227 | |
| Atlantis II fracture zone | |
|---|---|
| BT | Indian Ocean |
| .Atlantis II fracture zone | |
| RT | Leg 118 |
| Leg 176 | |
| ODP Site 732 | |
| ODP Site 733 | |
| ODP Site 734 | |
| ODP Site 735 | |
| Southwest Indian Ridge | |
| SN | N Southwest Indian Ridge, SW Indian Ocean. Added to Thesaurus in 1995. |
| Atlantis Seamount | |
|---|---|
| BT | Atlantic Ocean |
| .North Atlantic | |
| ..Atlantis Seamount | |
| SN | SW of the Azores. Before 1981, search Atlantis. Added to Thesaurus in 1981. |
| atlas | |
|---|---|
| RT | catalogs |
| glossaries | |
| maps | |
| publications | |
| report | |
| Atlas Mountains | |
|---|---|
| BT | Africa |
| .North Africa | |
| ..Atlas Mountains | |
| NT | Moroccan Atlas Mountains |
| RT | Algeria |
| Babor Range | |
| Morocco | |
| Tunisia | |
| SN | Mountain system of NW and N Africa extending from SW Morocco to NE Tunisia. Also search Atlas AND appropriate area. Indexed with countries as applicable. |
| Atlin British Columbia | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..British Columbia | |
| ...Atlin British Columbia | |
| SN | Village near Alaska border NE of Juneau in NW British Columbia. |
| atmosphere | |
|---|---|
| RT | aerosols |
| air | |
| air-sea interface | |
| angular momentum | |
| ash clouds | |
| atmospheric precipitation | |
| atmospheric pressure | |
| atmospheric transport | |
| biosphere | |
| boundary interactions | |
| circulation | |
| climate | |
| convection | |
| convection currents | |
| cycles | |
| degassing | |
| Earth | |
| environmental geology | |
| SN | For studies dealing with geochemical changes (short-term or during geologic time), observations related to interactions with phenomena of the Earth's surface, and other geophysical aspects. For changes in prehistoric climate, see paleoclimatology. |
| atmospheric precipitation | |
|---|---|
| NT | rain |
| snow | |
| RT | atmosphere |
| climate | |
| drainage basins | |
| drought | |
| evapotranspiration | |
| hydrologic cycle | |
| hydrology | |
| meteorology | |
| moisture | |
| precipitation | |
| raindrops | |
| rainfall | |
| retention | |
| water | |
| SN | Before 1978, also search hydrology AND precipitation. |
| atmospheric pressure | |
|---|---|
| RT | altimetry |
| atmosphere | |
| pressure | |
| atmospheric transport | |
|---|---|
| RT | air-sea interface |
| atmosphere | |
| dust | |
| dust storms | |
| circulation | |
| eruptions | |
| fallout | |
| fines | |
| particulate materials | |
| pollutants | |
| transport | |
| volcanic ash | |
| wind transport | |
| SN | Also search atmosphere AND transport or wind transport. Indexed with the materials and wind transport if applicable. |
| Atoka County Oklahoma | |
|---|---|
| BT | United States |
| .Oklahoma | |
| ..Atoka County Oklahoma | |
| SN | SE Oklahoma. |
| Atoka Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Middle Pennsylvanian | |
| ......Atokan | |
| .......Atoka Formation | |
| RT | Oklahoma |
| Arkansas | |
| SN | Sandstone members: Coody (Coata), Pope Chapel, Georges Fork, Dirty Creek, Webbers Falls, and Blackjack School. Subdivided, in Arkansas, to include Greenland Sandstone Member at base. |
| Atokan | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Middle Pennsylvanian | |
| ......Atokan | |
| NT | Atoka Formation |
| RT | Manakacha Formation |
| Watahomigi Formation | |
| SN | Provincial series, North America: lower Middle Pennsylvanian. Above Morrowan, below Desmoinesian. |
| atolls | |
|---|---|
| BT | reefs |
| .atolls | |
| RT | Coelenterata |
| bioherms | |
| islands | |
| lagoons | |
| atomic absorption | |
|---|---|
| RT | absorption |
| analysis | |
| atomic absorption spectra | |
| chemical analysis | |
| spectroscopy | |
| atomic absorption spectra | |
|---|---|
| BT | spectra |
| .atomic absorption spectra | |
| UF | absorption spectra |
| RT | absorption |
| atomic absorption | |
| spectroscopy | |
| SN | Used for data. For methodology, use atomic absorption. Before 1985, also search atomic absorption AND spectra. Added to Thesaurus in 1985. |
| atomic energy | |
|---|---|
| USE | nuclear energy |
| atomic force microscopy | |
|---|---|
| RT | analysis |
| chemical analysis | |
| microscope methods | |
| scanning tunneling microscopy | |
| SN | Measures various forces on the atomic level. Used for the method only. Abbreviation AFM. Added to Thesaurus in 1995. |
| atomic packing | |
|---|---|
| RT | crystal structure |
| crystal systems | |
| crystallography | |
| mineralogy | |
| packing | |
| SN | Before 1978, also search packing. |
| Atotsugawa Fault | |
|---|---|
| BT | nshu |
| .Atotsugawa Fault | |
| RT | Hida Mountains |
| Hokuriku | |
| SN | Honshu, central Japan. Added to Thesaurus in 1989. |
| atrazine | |
|---|---|
| BT | pesticides |
| .herbicides | |
| ..triazines | |
| ...atrazine | |
| RT | agrochemicals |
| pollutants | |
| SN | 2-chloro-4-ethylamine-6-isopropylamino s-triazine. Added to Thesaurus in 1993. |
| Atrypa | |
|---|---|
| BT | Invertebrata |
| .Brachiopoda | |
| ..Articulata | |
| ...Spiriferida | |
| ....Atrypidae | |
| .....Atrypa | |
| SN | Genus. |
| Atrypidae | |
|---|---|
| BT | Invertebrata |
| .Brachiopoda | |
| ..Articulata | |
| ...Spiriferida | |
| ....Atrypidae | |
| NT | Atrypa |
| Atsumi Peninsula | |
|---|---|
| BT | nshu |
| .Aichi Japan | |
| ..Atsumi Peninsula | |
| SN | Pacific coast of Aichi Prefecture, S central Honshu. |
| Attala County Mississippi | |
|---|---|
| BT | United States |
| .Mississippi | |
| ..Attala County Mississippi | |
| attapulgite | |
|---|---|
| USE | palygorskite |
| attenuation | |
|---|---|
| UF | damping |
| RT | seismology |
| backscattering | |
| elastic waves | |
| near-field spectra | |
| wave dispersion | |
| Atterberg limits | |
|---|---|
| UF | consistency limits |
| limits, Atterberg | |
| RT | rock mechanics |
| soil mechanics | |
| deformation | |
| plasticity | |
| Attica Greece | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Greece | |
| ...Sterea Ellas | |
| ....Attica Greece | |
| NT | Athens Greece |
| SN | Ancient division and state. Currently a department in E central Greece. |
| Attock Pakistan | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..Pakistan | |
| ...Punjab Pakistan | |
| ....Attock Pakistan | |
| SN | Town in NW Punjab Province, W Pakistan. |
| attribute, seismic | |
|---|---|
| SN | Not a valid term for GeoRef. If applicable, index specific attributes and hydrocarbon indicators. See seismology or seismic methods. |
| Aturia | |
|---|---|
| BT | Invertebrata |
| .Mollusca | |
| ..Cephalopoda | |
| ...Tetrabranchiata | |
| ....Nautiloidea | |
| .....Aturia | |
| SN | Genus. |