Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
gra  |
|---|
| grabens | |
|---|---|
| RT | aulacogens |
| faults | |
| half grabens | |
| horsts | |
| systems | |
| grade | |
|---|---|
| UF | metamorphic grade |
| RT | facies |
| metamorphism | |
| high-grade metamorphism | |
| cutoff grade | |
| ore grade | |
| low-grade metamorphism | |
| isograds | |
| P-T conditions | |
| grade and tonnage models | |
|---|---|
| SN | Not a valid term for GeoRef. As of 1995, use ore grade AND tonnage. |
| graded bedding | |
|---|---|
| BT | sedimentary structures |
| .turbidity current structures | |
| ..graded bedding | |
| RT | planar bedding structures |
| bedding | |
| Bouma sequence | |
| varves | |
| SN | Also index planar bedding structures if applicable (See list K.) |
| gradient | |
|---|---|
| SN | A valid term through 1978. After 1978, see geothermal gradient, or stream gradient for streams. |
| gradualism | |
|---|---|
| UF | phyletic gradualism |
| RT | biologic evolution |
| paleontology | |
| phylogeny | |
| punctuated equilibria | |
| SN | Added to Thesaurus in 1985. |
| graduate-level education | |
|---|---|
| BT | education |
| .graduate-level education | |
| RT | educational resources |
| SN | Before 1978, also search graduate level. |
| Grady County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Grady County Georgia | |
| SN | SW Georgia. |
| Grady County Oklahoma | |
|---|---|
| BT | United States |
| .Oklahoma | |
| ..Grady County Oklahoma | |
| SN | Central Oklahoma. |
| Grafton County New Hampshire | |
|---|---|
| BT | w Hampshire |
| .Grafton County New Hampshire | |
| RT | Hubbard Brook experimental forest |
| SN | W New Hampshire. |
| graftonite | |
|---|---|
| BT | phosphates |
| .graftonite | |
| Graham Coast | |
|---|---|
| USE | Graham Land |
| Graham County Arizona | |
|---|---|
| BT | United States |
| .Arizona | |
| ..Graham County Arizona | |
| NT | Geronimo volcanic field |
| RT | Coronado National Forest |
| SN | SE Arizona. |
| Graham County Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..Graham County Kansas | |
| SN | NW Kansas. |
| Graham County North Carolina | |
|---|---|
| BT | United States |
| .North Carolina | |
| ..Graham County North Carolina | |
| SN | Extreme W North Carolina. |
| Graham Island | |
|---|---|
| RT | British Columbia |
| Northwest Territories | |
| Queen Charlotte Islands | |
| Queen Elizabeth Islands | |
| SN | Queen Charlotte Islands, W of British Columbia. Also an island in Norwegian Bay in the Queen Elizabeth Islands, Northwest Territories. Indexed with island group and British Columbia or Northwest Territories as applicable. Added to Thesaurus in 1993. |
| Graham Land | |
|---|---|
| BT | Antarctica |
| .Graham Land | |
| UF | Graham Coast |
| SN | Part of N Antarctic Peninsula S of Cape Horn. |
| grahamite | |
|---|---|
| BT | bitumens |
| .grahamite | |
| RT | organic compounds |
| organic minerals | |
| SN | Used for the solid bitumen. Use mesosiderite for the meteorite. Added to Thesaurus in 1985. |
| Graian Alps | |
|---|---|
| BT | Europe |
| .Alps | |
| ..Western Alps | |
| ...Graian Alps | |
| RT | Piemonte Italy |
| French Alps | |
| Savoie France | |
| Savoy Alps | |
| Piedmont Alps | |
| Valle d'Aosta Italy | |
| SN | Division of Western Alps. On French-Italian border. Indexed with countries as applicable. Added to Thesaurus in 1985. |
| grain boundaries | |
|---|---|
| RT | crystal chemistry |
| crystal growth | |
| crystal zoning | |
| crystallography | |
| crystals | |
| grain size | |
| grains | |
| minerals | |
| phase equilibria | |
| shape analysis | |
| textures | |
| SN | Added to Thesaurus in 1983. |
| grain size | |
|---|---|
| RT | coarse-grained materials |
| dimensions | |
| fine-grained materials | |
| fines | |
| grain boundaries | |
| granulometry | |
| micritization | |
| sediments | |
| size distribution | |
| soils | |
| SN | Before 1981, also search size. |
| grain-size analysis | |
|---|---|
| USE | granulometry |
| Grainger County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Grainger County Tennessee | |
| SN | E Tennessee. |
| grains | |
|---|---|
| RT | dimensions |
| grain boundaries | |
| granulometry | |
| particles | |
| recrystallization | |
| sand | |
| sedimentary rocks | |
| sediments | |
| shape analysis | |
| sorting | |
| grainstone | |
|---|---|
| BT | sedimentary rocks |
| .carbonate rocks | |
| ..grainstone | |
| RT | rudstone |
| Graisivaudan | |
|---|---|
| USE | Gresivaudan |
| gramenite | |
|---|---|
| USE | nontronite |
| Gramineae | |
|---|---|
| BT | Plantae |
| .Spermatophyta | |
| ..Angiospermae | |
| ...Monocotyledoneae | |
| ....Gramineae | |
| NT | Spartina alterniflora |
| SN | Family. |
| Grampian Highlands | |
|---|---|
| BT | ottish Highlands |
| .Grampian Highlands | |
| RT | Grampian region Scotland |
| Moray Firth | |
| Scottish Northern Highlands | |
| SN | Added to Thesaurus in 1981. |
| Grampian region Scotland | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....Scotland | |
| .....Grampian region Scotland | |
| NT | Aberdeenshire Scotland |
| Banffshire Scotland | |
| Huntly Scotland | |
| RT | Cairngorm Mountains |
| Grampian Highlands | |
| Moray Firth | |
| Scottish Highlands | |
| SN | Administrative region in NE Scotland since 1974. It replaced the former counties Banffshire, Morayshire, Aberdeenshire, and Kincardineshire. |
| Gran Canaria | |
|---|---|
| USE | Grand Canary |
| Gran Chaco | |
|---|---|
| USE | Chaco |
| Granada Basin | |
|---|---|
| USE | Granada Depression |
| Granada City Spain | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Iberian Peninsula | |
| ...Spain | |
| ....Andalusia Spain | |
| .....Granada Spain | |
| ......Granada City Spain | |
| SN | Refers only to the city. In S Spain. Before 1993, also search Granada Spain. |
| Granada Depression | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Iberian Peninsula | |
| ...Spain | |
| ....Andalusia Spain | |
| .....Granada Spain | |
| ......Granada Depression | |
| UF | Granada Basin |
| SN | S central Spain. |
| Granada Spain | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Iberian Peninsula | |
| ...Spain | |
| ....Andalusia Spain | |
| .....Granada Spain | |
| NT | Granada City Spain |
| Granada Depression | |
| Guadix-Baza Basin | |
| RT | Alpujarras |
| Spanish Sierra Nevada | |
| SN | Refers only to the province in S Spain. From 1981-1992, also search Granada Province and Spain. For the city, see Granada City Spain. |
| Grand |
|---|
| Grand Atlas Mountains | |
|---|---|
| USE | High Atlas |
| Grand Banks | |
|---|---|
| RT | DSDP Site 384 |
| Grand Banks earthquake 1929 | |
| Hibernia Field | |
| Jeanne d'Arc Basin | |
| North Atlantic | |
| SN | Shoal or banks E and S of Newfoundland. Indexed with North Atlantic as applicable. |
| Grand Banks earthquak |
|---|
| Grand Banks earthquake 1929 | |
|---|---|
| BT | earthquakes |
| .Grand Banks earthquake 1929 | |
| RT | Newfoundland Island |
| North Atlantic | |
| Grand Banks | |
| SN | Continental slope off Newfoundland. Before 1985, also search Grand Banks AND earthquakes AND 1929. Added to Thesaurus in 1993. |
| Grand Canary | |
|---|---|
| BT | Atlantic Ocean Islands |
| .Canary Islands | |
| ..Grand Canary | |
| UF | Gran Canaria |
| SN | One of Spain's Canary Islands NW of Western Sahara. |
| Grand Canyon | |
|---|---|
| UF | Grand Canyon region |
| RT | Arizona |
| national parks | |
| Coconino County Arizona | |
| Mohave County Arizona | |
| Marble Canyon | |
| Snake River canyon | |
| Stanton's Cave | |
| SN | Gorge in Colorado River in NW Arizona. Indexed with counties or region as applicable. |
| Grand Canyon region | |
|---|---|
| USE | Grand Canyon |
| Grand Cayman Island | |
|---|---|
| BT | Caribbean region |
| .West Indies | |
| ..Cayman Islands | |
| ...Grand Cayman Island | |
| RT | Caribbean Sea |
| SN | Largest of the Cayman Islands. About 200 miles NW of Jamaica. Also search Grand Cayman. |
| Grand Coulee Dam | |
|---|---|
| BT | United States |
| .Washington | |
| ..Grand Coulee Dam | |
| RT | Columbia River |
| SN | On Columbia River, NE Washington. Indexed with counties as applicable. Added to Thesaurus in 1985. |
| Grand County Colorado | |
|---|---|
| BT | United States |
| .Colorado | |
| ..Grand County Colorado | |
| RT | Book Cliffs |
| Rocky Mountain National Park | |
| SN | N Colorado. |
| Grand County Utah | |
|---|---|
| BT | United States |
| .Utah | |
| ..Grand County Utah | |
| NT | Moab Utah |
| RT | Book Cliffs |
| Salt Valley | |
| SN | E Utah. |
| Grand Falls (Labrador) | |
|---|---|
| USE | Churchill Falls |
| Grand Forks County North Dakota | |
|---|---|
| BT | United States |
| .North Dakota | |
| ..Grand Forks County North Dakota | |
| NT | Grand Forks North Dakota |
| SN | E North Dakota. |
| Grand Forks North Dakota | |
|---|---|
| BT | United States |
| .North Dakota | |
| ..Grand Forks County North Dakota | |
| ...Grand Forks North Dakota | |
| SN | City on the Red River of the North in E North Dakota. |
| Grand Isle | |
|---|---|
| RT | Jefferson Parish Louisiana |
| SN | Island in Jefferson Parish off SE coast of Louisiana. May also occur in other locations. Indexed with parish or regions as applicable. |
| Grand Isle County Vermont | |
|---|---|
| BT | United States |
| .Vermont | |
| ..Grand Isle County Vermont | |
| Grand Junction Colorado | |
|---|---|
| BT | United States |
| .Colorado | |
| ..Mesa County Colorado | |
| ...Grand Junction Colorado | |
| SN | City in W Colorado. |
| Grand Manitoulin | |
|---|---|
| USE | Manitoulin Island |
| Grand Rapids Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Lower Peninsula | |
| ...Kent County Michigan | |
| ....Grand Rapids Michigan | |
| SN | City in SW Michigan. |
| Grand River | |
|---|---|
| RT | Louisiana |
| Michigan | |
| Missouri | |
| Neosho River valley | |
| Oklahoma | |
| Ontario | |
| South Dakota | |
| SN | River in numerous locations. Indexed with Ontario and states as applicable. |
| Grand Teton |
|---|
| Grand Teton National Park | |
|---|---|
| BT | United States |
| .Wyoming | |
| ..Teton County Wyoming | |
| ...Grand Teton National Park | |
| RT | national parks |
| Teton National Forest | |
| SN | NW Wyoming. Added to Thesaurus in 1985. |
| Grand Traverse County Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Lower Peninsula | |
| ...Grand Traverse County Michigan | |
| SN | NW Michigan. |
| Grande River | |
|---|---|
| USE | Rio Grande |
| Grande Ronde Basalt | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Miocene | |
| .....Grande Ronde Basalt | |
| RT | Idaho |
| Washington | |
| lower Miocene | |
| Oregon | |
| middle Miocene | |
| Hanford Reservation | |
| Picture Gorge Basalt | |
| Columbia River Basalt Group | |
| Yakima Basalt | |
| SN | SE Washington, Oregon and W Idaho. Lower to middle Miocene. Has been considered part of the Yakima Basalt of the Columbia River Basalt Group. Indexed with ages as applicable. Added to Thesaurus in 1985. |
| Grandfather Mountain | |
|---|---|
| RT | Blue Ridge Mountains |
| Caldwell County North Carolina | |
| North Carolina | |
| SN | In the Blue Ridge Mountains in NW North Carolina. May occur in other locations. Indexed with county and Blue Ridge Mountains as applicable. |
| grandidierite | |
|---|---|
| BT | silicates |
| .orthosilicates | |
| ..nesosilicates | |
| ...grandidierite | |
| Graneros Shale | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Graneros Shale | |
| RT | New Mexico |
| Wyoming | |
| Montana | |
| Colorado | |
| Nebraska | |
| Kansas | |
| South Dakota | |
| Belle Fourche Shale | |
| Colorado Group | |
| Benton Formation | |
| SN | In Colorado Group. E Colorado, Kansas, SE Montana, Nebraska, NE New Mexico, South Dakota, and E Wyoming. |
| Granite County Montana | |
|---|---|
| BT | United States |
| .Montana | |
| ..Granite County Montana | |
| RT | Flint Creek Range |
| SN | W Montana. |
| granite deposits | |
|---|---|
| RT | building stone |
| construction materials | |
| crushed stone | |
| dimension stone | |
| granites | |
| granitization | |
| ornamental materials | |
| SN | Before 1981, also search granites. Commodity. See List C. |
| granite gneiss | |
|---|---|
| BT | metamorphic rocks |
| .gneisses | |
| ..granite gneiss | |
| UF | granitic gneiss |
| Granite Mountains | |
|---|---|
| RT | California |
| Fremont County Wyoming | |
| Natrona County Wyoming | |
| Wyoming | |
| SN | Central Wyoming. Also in California. Indexed with counties as applicable. |
| granite porphyry | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..granites | |
| ...granite porphyry | |
| RT | porphyry |
| granitic | |
|---|---|
| SN | A valid term through 1977. After 1977, use granitic composition or granitic layer. |
| granitic composition | |
|---|---|
| RT | composition |
| granites | |
| granitic layer | |
| igneous rocks | |
| SN | Before 1978, also search granitic; granites and composition. |
| granitic gneiss | |
|---|---|
| USE | granite gneiss |
| granitic lay |
|---|
| granitic layer | |
|---|---|
| UF | layer, granitic |
| sial | |
| RT | crust |
| lower crust | |
| basaltic layer | |
| granitic composition | |
| SN | Before 1978, also search granitic; sial. |
| granitic rocks | |
|---|---|
| USE | granites |
| granitification | |
|---|---|
| USE | granitization |
| granitization | |
|---|---|
| BT | metamorphism |
| .granitization | |
| UF | granitification |
| RT | granites |
| processes | |
| metasomatism | |
| granite deposits | |
| magmatism | |
| crystallization | |
| feldspathization | |
| granitoid | |
|---|---|
| SN | A valid term through 1978. After 1978, use granites or granitic composition. |
| Granny Creek Field | |
|---|---|
| BT | United States |
| .West Virginia | |
| ..Granny Creek Field | |
| RT | oil and gas fields |
| Clay County West Virginia | |
| Roane County West Virginia | |
| SN | Roane and Clay counties, central West Virginia. Also called Granny's Creek Field. Indexed with Roane County West Virginia and/or Clay County West Virginia as applicable. |
| granodiorite porphyry | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..granites | |
| ...granodiorites | |
| ....granodiorite porphyry | |
| RT | porphyry |
| granodiorites | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..granites | |
| ...granodiorites | |
| NT | granodiorite porphyry |
| RT | beresite |
| SN | Before 1981, search granite-granodiorite family. |
| granophyre | |
|---|---|
| BT | igneous rocks |
| .volcanic rocks | |
| ..granophyre | |
| granosyenite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..granites | |
| ...granosyenite | |
| BT | igneous rocks |
| .plutonic rocks | |
| ..syenites | |
| ...granosyenite | |
| SN | This term has multiple hierarchies. |
| Grant Canyon Field | |
|---|---|
| BT | United States |
| .Nevada | |
| ..Nye County Nevada | |
| ...Grant Canyon Field | |
| RT | oil and gas fields |
| Railroad Valley | |
| SN | Oil field, Railroad Valley area, S central Nevada. Added to Thesaurus in 1995. |
| Grant County Arkansas | |
|---|---|
| BT | United States |
| .Arkansas | |
| ..Grant County Arkansas | |
| SN | Central Arkansas. |
| Grant County Indiana | |
|---|---|
| BT | Indiana |
| .Grant County Indiana | |
| SN | E central Indiana. |
| Grant County Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..Grant County Kansas | |
| SN | SW Kansas. |
| Grant County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Grant County Kentucky | |
| SN | N Kentucky. |
| Grant County Minnesota | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Grant County Minnesota | |
| SN | W Minnesota. |
| Grant County Nebraska | |
|---|---|
| BT | United States |
| .Nebraska | |
| ..Grant County Nebraska | |
| SN | W central Nebraska. |
| Grant County New Mexico | |
|---|---|
| BT | United States |
| .New Mexico | |
| ..Grant County New Mexico | |
| NT | Santa Rita New Mexico |
| Silver City New Mexico | |
| RT | Black Range |
| SN | SW New Mexico. |
| Grant County North Dakota | |
|---|---|
| BT | United States |
| .North Dakota | |
| ..Grant County North Dakota | |
| SN | S North Dakota. |
| Grant County Oklahoma | |
|---|---|
| BT | United States |
| .Oklahoma | |
| ..Grant County Oklahoma | |
| SN | N Oklahoma. |
| Grant County Oregon | |
|---|---|
| BT | United States |
| .Oregon | |
| ..Grant County Oregon | |
| SN | E central Oregon. |
| Grant County South Dakota | |
|---|---|
| BT | United States |
| .South Dakota | |
| ..Grant County South Dakota | |
| SN | NE South Dakota. |
| Grant County Washington | |
|---|---|
| BT | United States |
| .Washington | |
| ..Grant County Washington | |
| RT | Hanford Reservation |
| SN | E central Washington. |
| Grant County West Virginia | |
|---|---|
| BT | United States |
| .West Virginia | |
| ..Grant County West Virginia | |
| SN | E West Virginia. |
| Grant County Wisconsin | |
|---|---|
| BT | United States |
| .Wisconsin | |
| ..Grant County Wisconsin | |
| SN | Extreme SW Wisconsin. |
| Grant Parish Louisiana | |
|---|---|
| BT | United States |
| .Louisiana | |
| ..Grant Parish Louisiana | |
| Grant Range | |
|---|---|
| RT | Nevada |
| Nye County Nevada | |
| SN | IN NE Nye County, central Nevada. May occur in other locations. Indexed with county and mountain ranges or region as applicable. |
| Grants District | |
|---|---|
| USE | Grants mining district |
| Grants mineral belt | |
|---|---|
| BT | United States |
| .New Mexico | |
| ..Grants mineral belt | |
| RT | Ambrosia Lake mining district |
| Grants mining district | |
| SN | Mineralized region in NW New Mexico. Added to Thesaurus in 1981. |
| Grants mining district | |
|---|---|
| BT | United States |
| .New Mexico | |
| ..McKinley County New Mexico | |
| ...Grants mining district | |
| UF | Grants District |
| RT | mines |
| uranium ores | |
| Grants mineral belt | |
| SN | Mining district in NW New Mexico. Added to Thesaurus in 1993. |
| Grants New Mexico | |
|---|---|
| BT | United States |
| .New Mexico | |
| ..Valencia County New Mexico | |
| ...Grants New Mexico | |
| SN | Town in W New Mexico. |
| granular materials | |
|---|---|
| RT | coarse-grained materials |
| engineering geology | |
| fine-grained materials | |
| fines | |
| granulometry | |
| materials | |
| particulate materials | |
| soil mechanics | |
| SN | Also search granular. |
| granulite facies | |
|---|---|
| BT | facies |
| .granulite facies | |
| RT | metamorphic rocks |
| granulites | |
|---|---|
| BT | metamorphic rocks |
| .granulites | |
| NT | kinzigite |
| leptite | |
| pyroxene granulite | |
| RT | eclogite |
| granulometry | |
|---|---|
| UF | grain-size analysis |
| RT | sedimentation |
| particles | |
| sediments | |
| grain size | |
| granular materials | |
| grains | |
| size distribution | |
| shape analysis | |
| Granville County North Carolina | |
|---|---|
| BT | United States |
| .North Carolina | |
| ..Granville County North Carolina | |
| NT | Oxford North Carolina |
| SN | N North Carolina. |
| grapestone | |
|---|---|
| BT | sedimentary rocks |
| .grapestone | |
| RT | textures |
| SN | Used to indicate a texture. |
| graphic display | |
|---|---|
| UF | display, graphic |
| RT | data processing |
| visualization | |
| CAD | |
| computer animation | |
| spreadsheets | |
| image analysis | |
| SN | Before 1978, also search graphic AND display. |
| graphic granite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..granites | |
| ...graphic granite | |
| RT | micropegmatite |
| pegmatite | |
| graphic methods | |
|---|---|
| RT | art |
| digital line graphs | |
| histograms | |
| image analysis | |
| methods | |
| visualization | |
| SN | Before 1978, also search graphic. |
| graphic texture | |
|---|---|
| BT | textures |
| .graphic texture | |
| RT | igneous rocks |
| SN | Before 1978, search graphic. |
| graphite | |
|---|---|
| BT | native elements |
| .graphite | |
| UF | black lead |
| RT | shungite |
| graphitization | |
| carbon | |
| chaoite | |
| diamond | |
| lonsdaleite | |
| graphite deposits | |
| SN | As of 1981, use graphite deposits for graphite as a commodity. |
| graphite deposits | |
|---|---|
| RT | graphite |
| industrial minerals | |
| refractory materials | |
| SN | Commodity. See List C. |
| graphitization | |
|---|---|
| RT | annealing |
| carbon | |
| graphite | |
| metal ores | |
| processes | |
| SN | Added to Thesaurus in 1989. |
| Graptolithina | |
|---|---|
| NT | Camaroidea |
| Dendroidea | |
| Graptoloidea | |
| Stolonoidea | |
| Tuboidea | |
| RT | Hemichordata |
| Invertebrata | |
| SN | Indexed with Hemichordata or Invertebrata as applicable. |
| Graptoloidea | |
|---|---|
| BT | Graptolithina |
| .Graptoloidea | |
| NT | Didymograptina |
| Diplograptina | |
| Glossograptina | |
| Monograptina | |
| RT | Invertebrata |
| Hemichordata | |
| SN | Indexed with Hemichordata or Invertebrata as applicable. |
| grasslands | |
|---|---|
| RT | ecology |
| herbivorous taxa | |
| prairies | |
| revegetation | |
| savannas | |
| steppes | |
| wetlands | |
| Gratiot County Michigan | |
|---|---|
| BT | United States |
| .Michigan | |
| ..Michigan Lower Peninsula | |
| ...Gratiot County Michigan | |
| SN | Central Michigan. |
| gratonite | |
|---|---|
| BT | sulfosalts |
| .sulfarsenites | |
| ..gratonite | |
| Gratz Austria | |
|---|---|
| USE | Graz Austria |
| Graubunden Switzerland | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Switzerland | |
| ...Graubunden Switzerland | |
| NT | Davos Switzerland |
| Oberhalbstein | |
| Tavetsch | |
| UF | Grisons Switzerland |
| RT | Rhaetian Alps |
| Inn Valley | |
| Bergell Massif | |
| Lepontine Alps | |
| Oberalp Pass | |
| SN | Canton in E Switzerland. |
| grauwacke | |
|---|---|
| USE | graywacke |
| Gravberg Well | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..Scandinavia | |
| ...Sweden | |
| ....Gravberg Well | |
| UF | Gravberg-1 Well |
| RT | deep drilling |
| Siljan Ring | |
| SN | Deep borehole, Siljan Ring, central Sweden. Added to Thesaurus in 1993. |
| Gravberg-1 Well | |
|---|---|
| USE | Gravberg Well |
| gravel | |
|---|---|
| BT | sediments |
| .clastic sediments | |
| ..gravel | |
| RT | breccia |
| gravel deposits | |
| sand | |
| alluvium | |
| pebbles | |
| terrigenous materials | |
| gravel-bed streams | |
| boulders | |
| cobbles | |
| carbonate sediments | |
| shingle | |
| SN | As of 1981, use gravel deposits for gravel as a commodity. |
| gravel deposits | |
|---|---|
| RT | aggregate |
| construction materials | |
| crushed stone | |
| gravel | |
| sands | |
| SN | Includes sand when sand is used as a construction material. Commodity. See List C. |
| gravel-bed rivers | |
|---|---|
| USE | gravel-bed streams |
| gravel-bed streams | |
|---|---|
| BT | streams |
| .gravel-bed streams | |
| UF | gravel-bed rivers |
| RT | sedimentation |
| geomorphology | |
| fluvial features | |
| gravel | |
| rivers | |
| sediment transport | |
| bedload | |
| stream transport | |
| braided streams | |
| SN | Indexed with fluvial features and/or braided streams if applicable. Added to Thesaurus in 1998. |
| Gravelly Range | |
|---|---|
| BT | United States |
| .U. S. Rocky Mountains | |
| ..Gravelly Range | |
| BT | United States |
| .Montana | |
| ..Gravelly Range | |
| RT | Beaverhead County Montana |
| Madison County Montana | |
| SN | SW Montana. This term has multiple hierarchies. Indexed with counties as applicable. Added to Thesaurus in 1985. |
| Graves County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Graves County Kentucky | |
| gravimetry | |
|---|---|
| USE | gravity methods |
| SN | See gravimeters for the instruments. |
| gravitation | |
|---|---|
| USE | gravity field |
| gravitational differentiation | |
|---|---|
| USE | crystal fractionation |
| gravitational gliding | |
|---|---|
| USE | gravity sliding |
| gravitational sliding | |
|---|---|
| USE | gravity sliding |
| gravity | |
|---|---|
| SN | A valid term through mid-1978. Use specific term, e.g. gravity field or gravity platforms. For gravity faults, use the term normal faults. |
| gravity anomalies | |
|---|---|
| NT | Bouguer anomalies |
| RT | anomalies |
| geophysical methods | |
| geophysical surveys | |
| gravity methods | |
| magnetic anomalies | |
| residual anomalies | |
| SN | Also search gravity methods AND anomalies. |
| gravity dams | |
|---|---|
| BT | dams |
| .gravity dams | |
| NT | earth dams |
| RT | concrete dams |
| SN | Indexed with concrete dams if applicable. |
| gravity exploration | |
|---|---|
| SN | Not a valid index term after 1971. Used in subfiles G and N. Now use gravity methods. See exploration, coal exploration, mineral exploration or petroleum exploration. |
| gravity faults | |
|---|---|
| USE | normal faults |
| gravity field | |
|---|---|
| UF | field, gravity |
| gravitation | |
| RT | Moon |
| geophysical methods | |
| geodesy | |
| Earth | |
| splines | |
| gravity field, Earth | |
|---|---|
| SN | Not a valid GeoRef index term after 1971. Used in subfiles E, G, N, T and B. |
| gravity field, Moon | |
|---|---|
| SN | Not a valid GeoRef index term after 1971. Used in subfiles G and B. |
| gravity flows | |
|---|---|
| RT | bottom features |
| flows | |
| glacial geology | |
| glacier surges | |
| glaciers | |
| gravity sliding | |
| ice movement | |
| landslides | |
| mass movements | |
| rock glaciers | |
| sedimentation | |
| slumping | |
| SN | Added to Thesaurus in 1993. |
| gravity gliding | |
|---|---|
| USE | gravity sliding |
| gravity logging | |
|---|---|
| BT | well-logging |
| .gravity logging | |
| RT | gravity methods |
| gravity profiles | |
| SN | Added to Thesaurus in 1984. |
| gravity meters | |
|---|---|
| USE | gravimeters |
| gravity methods | |
|---|---|
| BT | geophysical methods |
| .gravity methods | |
| UF | gravimetry |
| RT | Doppler effect |
| geophysical surveys | |
| Bouguer anomalies | |
| free-air anomalies | |
| gravity anomalies | |
| gravimeters | |
| inverse problem | |
| gravity survey maps | |
| gravity logging | |
| gravity profiles | |
| Gravsat | |
| variometers | |
| SN | For surveys, search with geophysical surveys and an area. For surveys, also index geophysical surveys and the area. |
| gravity platforms | |
|---|---|
| BT | marine installations |
| .gravity platforms | |
| RT | platforms |
| marine platforms | |
| SN | Used in engineering geology. |
| gravity profiles | |
|---|---|
| BT | geophysical profiles |
| .gravity profiles | |
| RT | gravity methods |
| gravity logging | |
| SN | Added to Thesaurus in 1995. |
| gravity sliding | |
|---|---|
| UF | ecoulement |
| gliding (tectonics) | |
| gravitational gliding | |
| gravitational sliding | |
| gravity gliding | |
| gravity tectonics | |
| sliding, gravity | |
| RT | tectonics |
| nappes | |
| gravity flows | |
| megabreccia | |
| crustal shortening | |
| SN | Also search sliding. |
| gravity survey maps | |
|---|---|
| BT | maps |
| .gravity survey maps | |
| RT | geophysical methods |
| geophysical surveys | |
| geophysical survey maps | |
| gravity methods | |
| SN | Also search maps AND geophysical surveys AND gravity methods with area. |
| gravity tectonics | |
|---|---|
| USE | gravity sliding |
| Gravsat | |
|---|---|
| RT | geophysical methods |
| geophysical surveys | |
| gravity methods | |
| remote sensing | |
| satellite methods | |
| SN | Added to Thesaurus in 1985. |
| gray antimony | |
|---|---|
| USE | jamesonite |
| Gray County Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..Gray County Kansas | |
| Gray County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Gray County Texas | |
| Gray desert soil | |
|---|---|
| USE | Sierozems |
| Gray earth | |
|---|---|
| USE | Sierozems |
| Gray forest soils | |
|---|---|
| BT | soils |
| .Gray forest soils | |
| UF | Grey forest soils |
| RT | soil group |
| gray hematite | |
|---|---|
| USE | specularite |
| Grayburg Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Permian | |
| ....Guadalupian | |
| .....Grayburg Formation | |
| RT | New Mexico |
| Texas | |
| SN | Guadalupian. SE New Mexico, W Texas. Added to Thesaurus in 1989. |
| Grays Harbor | |
|---|---|
| RT | Grays Harbor County Washington |
| Washington | |
| SN | Inlet of Pacific Ocean on SW coast of Grays Harbor County, Washington. Indexed with county or region as applicable. |
| Grays Harbor County Washington | |
|---|---|
| BT | United States |
| .Washington | |
| ..Grays Harbor County Washington | |
| RT | Grays Harbor |
| SN | On Pacific Ocean in W central Washington. |
| Grayson County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Grayson County Kentucky | |
| Grayson County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Grayson County Texas | |
| Grayson County Virginia | |
|---|---|
| BT | United States |
| .Virginia | |
| ..Grayson County Virginia | |
| graywac |
|---|
| graywacke | |
|---|---|
| BT | sedimentary rocks |
| .clastic rocks | |
| ..graywacke | |
| UF | grauwacke |
| greywacke | |
| RT | sandstone |
| terrigenous materials | |
| litharenite | |
| metagraywacke | |
| subgraywacke | |
| Graz Austria | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Austria | |
| ...Styria Austria | |
| ....Graz Austria | |
| UF | Gratz Austria |
| SN | City in Styrian Alps in SE Styria. |