Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
Fr  | |
|---|---|
| USE | francium |
| Fra Mauro | |
|---|---|
| BT | Moon |
| .Fra Mauro | |
| UF | Fra Mauro crater |
| Fra Mauro Formation | |
| Fra Mauro crater | |
|---|---|
| USE | Fra Mauro |
| Fra Mauro Formation | |
|---|---|
| USE | Fra Mauro |
| fractal analysis | |
|---|---|
| USE | fractals |
| fractal dimensions | |
|---|---|
| USE | fractals |
| fractal geometry | |
|---|---|
| USE | fractals |
| fractals | |
|---|---|
| UF | fractal analysis |
| fractal dimensions | |
| fractal geometry | |
| RT | mathematical geology |
| mathematical methods | |
| self-organization | |
| chaos | |
| power law | |
| self-similarity | |
| SN | Added to Thesaurus in 1989. |
| fractional crystallization | |
|---|---|
| RT | chemical fractionation |
| crystal fractionation | |
| crystal zoning | |
| crystallization | |
| magmas | |
| magmatic differentiation | |
| reaction rims | |
| segregation | |
| SN | Crystallization during which early-formed crystals are prevented from equilibrating with the liquid from which they grew. Results in series of residual liquids of more extreme compositions than occur with equilibrium crystallization. Also referred to as f |
| fractionation | |
|---|---|
| SN | No longer a valid term for GeoRef. From 1985-1997 used for isotope fractionation only. Now see isotope fractionation. Use fractional crystallization for fractionation of magmas; use chemical fractionation for other geochemical fractionation. |
| fracture cleavage | |
|---|---|
| BT | foliation |
| .fracture cleavage | |
| RT | fractures |
| cleavage | |
| joints | |
| fracture strength | |
|---|---|
| UF | breaking strength |
| fracture stress | |
| RT | deformation |
| yield strength | |
| strength | |
| elastic limit | |
| ductile deformation | |
| fracture stress | |
|---|---|
| USE | fracture strength |
| fracture zones | |
|---|---|
| UF | zones, fracture |
| RT | ocean floors |
| faults | |
| plate tectonics | |
| transform faults | |
| sea-floor spreading | |
| segmentation | |
| mid-ocean ridges | |
| fractures | |
| fractured materials | |
|---|---|
| RT | fractures |
| fracturing | |
| hydraulic fracturing | |
| materials | |
| preferential flow | |
| rock mechanics | |
| SN | Added to Thesaurus in 1985. |
| fracturing | |
|---|---|
| RT | fractured materials |
| hydraulic fracturing | |
| naturally fractured reservoirs | |
| SN | Term is used for natural fracturing, and not for artificially induced fracturing. |
| fragipans | |
|---|---|
| BT | soils |
| .fragipans | |
| fragmentation | |
|---|---|
| RT | fragments |
| processes | |
| SN | Used as a general term. |
| fragmentograms | |
|---|---|
| RT | chemical analysis |
| chromatograms | |
| gas chromatograms | |
| mass spectra | |
| spectroscopy | |
| SN | Added to Thesaurus in 1995. |
| fragments | |
|---|---|
| RT | clastic rocks |
| clasts | |
| fragmentation | |
| particles | |
| Fram Strait | |
|---|---|
| BT | Arctic Ocean |
| .Fram Strait | |
| RT | Greenland |
| Svalbard | |
| Leg 151 | |
| ODP Site 909 | |
| Norwegian Sea | |
| ODP Site 908 | |
| SN | Connects N Norwegian Sea with central Arctic Ocean between NE Greenland and W Svalbard. Indexed with Norwegian Sea if applicable. Added to Thesaurus in 1993. |
| framboidal pyrite | |
|---|---|
| USE | framboidal texture |
| framboidal texture | |
|---|---|
| BT | textures |
| .framboidal texture | |
| UF | framboidal pyrite |
| framboids | |
| RT | pyrite |
| SN | Before 1978, search framboidal. |
| framboids | |
|---|---|
| USE | framboidal texture |
| framework silicates | |
|---|---|
| BT | silicates |
| .framework silicates | |
| NT | cancrinite |
| chkalovite | |
| danburite | |
| feldspar group | |
| genthelvite | |
| helvite | |
| karpinskyite | |
| leifite | |
| leucite | |
| nepheline group | |
| pollucite | |
| pseudoleucite | |
| reedmergnerite | |
| scapolite group | |
| silica minerals | |
| sodalite group | |
| wenkite | |
| zeolite group | |
| UF | tectosilicates |
| SN | Before 1981, maskelynite was included as a narrower term. |
| Franche-Comte | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...Franche-Comte | |
| RT | Doubs France |
| Jura France | |
| SN | Historical region on the Swiss border S and SW of Alsace. |
| Francis Creek Shale | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Francis Creek Shale | |
| RT | Illinois |
| Desmoinesian | |
| SN | W and central Illinois. |
| Franciscan Complex | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Franciscan Complex | |
| UF | Franciscan Formation |
| RT | Jurassic |
| Cretaceous | |
| California | |
| Calera Limestone | |
| SN | Upper Jurassic to Upper Cretaceous. W California. The Franciscan Complex includes the Corral Hollow Shales, Oakridge Sandstone, and Del Puerto Keratophyre. Indexed with age as applicable. Added to Thesaurus in 1993. |
| Franciscan Formation | |
|---|---|
| USE | Franciscan Complex |
| francium | |
|---|---|
| BT | metals |
| .alkali metals | |
| ..francium | |
| UF | Fr |
| francolite | |
|---|---|
| BT | phosphates |
| .francolite | |
| RT | apatite |
| Franconia | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Franconia | |
| UF | Franken |
| RT | Bavaria Germany |
| Baden-Wurttemberg Germany | |
| Hesse Germany | |
| Middle Franconia | |
| Upper Franconia Germany | |
| SN | Former duchy of S central Germany. Indexed with states as applicable. |
| Franconia Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Cambrian | |
| ....Upper Cambrian | |
| .....Franconia Formation | |
| RT | Illinois |
| Wisconsin | |
| Minnesota | |
| SN | Includes Woodhill, Birkmose, Tomah, Reno and Mazomanie members. N Illinois, SE Minnesota, and SW Wisconsin. Indexed with states as applicable. |
| Franconian Alb | |
|---|---|
| USE | Franconian Jura |
| Franconian Forest | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Bavaria Germany | |
| ....Franconian Forest | |
| RT | Thuringian Forest |
| SN | S outlier of the Thuringian Forest. |
| Franconian Jura | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Bavaria Germany | |
| ....Franconian Jura | |
| UF | Franconian Alb |
| RT | Middle Franconia |
| SN | Plateau in central Bavaria. A northern continuation of the Swabian Alb. |
| Franken | |
|---|---|
| USE | Franconia |
| Frankenberg Germany | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Frankenberg Germany | |
| RT | Saxony Germany |
| Hesse Germany | |
| SN | City in Saxony, E Germany also a city in Hesse. Indexed with states as applicable. |
| Frankfurt Bezirk | |
|---|---|
| SN | No longer a valid term for GeoRef. District in E East Germany. Before 1981, search Frankfurt AND East Germany. As of 1993, see Brandenburg Germany. |
| Frankfurt Germany | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Frankfurt Germany | |
| RT | Brandenburg Germany |
| Hesse Germany | |
| SN | City. Frankfurt am Main in Hesse and Frankfurt an der Oder in Brandenburg. Before 1993, Frankfurt am Main was used with West Germany and Frankfurt an der Oder was used with East Germany. Indexed with states as applicable. |
| Frankfurt Stade | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Quarternary | |
| ....Pleistocene | |
| .....Upper Pleistocene | |
| ......Weichselian | |
| .......Frankfurt Stade | |
| SN | Europe. |
| Franklin County Alabama | |
|---|---|
| BT | United States |
| .Alabama | |
| ..Franklin County Alabama | |
| SN | NW Alabama. |
| Franklin County Arkansas | |
|---|---|
| BT | United States |
| .Arkansas | |
| ..Franklin County Arkansas | |
| SN | NW Arkansas. |
| Franklin County Florida | |
|---|---|
| BT | United States |
| .Florida | |
| ..Franklin County Florida | |
| NT | Apalachicola Bay |
| Apalachicola Florida | |
| SN | NW Florida. |
| Franklin County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Franklin County Georgia | |
| SN | NE Georgia. |
| Franklin County Idaho | |
|---|---|
| BT | United States |
| .Idaho | |
| ..Franklin County Idaho | |
| NT | Oxford Idaho |
| SN | SE Idaho. |
| Franklin County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Franklin County Illinois | |
| SN | S Illinois. |
| Franklin County Indiana | |
|---|---|
| BT | Indiana |
| .Franklin County Indiana | |
| SN | SE Indiana. |
| Franklin County Iowa | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Franklin County Iowa | |
| SN | N central Iowa. |
| Franklin County Kansas | |
|---|---|
| BT | United States |
| .Kansas | |
| ..Franklin County Kansas | |
| SN | E Kansas. |
| Franklin County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Franklin County Kentucky | |
| SN | N central Kentucky. |
| Franklin County Maine | |
|---|---|
| BT | United States |
| .Maine | |
| ..Franklin County Maine | |
| RT | Rangeley Lakes |
| SN | W Maine. |
| Franklin County Massachusetts | |
|---|---|
| BT | United States |
| .Massachusetts | |
| ..Franklin County Massachusetts | |
| SN | NW Massachusetts. |
| Franklin County Mississippi | |
|---|---|
| BT | United States |
| .Mississippi | |
| ..Franklin County Mississippi | |
| SN | SW Mississippi. |
| Franklin County Missouri | |
|---|---|
| BT | United States |
| .Missouri | |
| ..Franklin County Missouri | |
| SN | E central Missouri. |
| Franklin County Nebraska | |
|---|---|
| BT | United States |
| .Nebraska | |
| ..Franklin County Nebraska | |
| SN | S Nebraska. |
| Franklin County New York | |
|---|---|
| BT | United States |
| .New York | |
| ..Franklin County New York | |
| RT | Saint Lawrence Lowlands |
| Saint Lawrence River | |
| Saint Lawrence Valley | |
| SN | NE New York. |
| Franklin County North Carolina | |
|---|---|
| BT | United States |
| .North Carolina | |
| ..Franklin County North Carolina | |
| SN | N central North Carolina. |
| Franklin County Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Franklin County Ohio | |
| NT | Columbus Ohio |
| SN | Central Ohio. |
| Franklin County Pennsylvania | |
|---|---|
| BT | United States |
| .Pennsylvania | |
| ..Franklin County Pennsylvania | |
| NT | Waynesboro Pennsylvania |
| SN | S Pennsylvania. |
| Franklin County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Franklin County Tennessee | |
| SN | S Tennessee. |
| Franklin County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Franklin County Texas | |
| SN | NE Texas. |
| Franklin County Vermont | |
|---|---|
| BT | United States |
| .Vermont | |
| ..Franklin County Vermont | |
| SN | NW Vermont. |
| Franklin County Virginia | |
|---|---|
| BT | United States |
| .Virginia | |
| ..Franklin County Virginia | |
| SN | S Virginia. |
| Franklin County Washington | |
|---|---|
| BT | United States |
| .Washington | |
| ..Franklin County Washington | |
| RT | Hanford Reservation |
| SN | SW Washington. |
| Franklin District Northwest Territories | |
|---|---|
| BT | Canada |
| .Northwest Territories | |
| ..Franklin District Northwest Territories | |
| NT | Arctic Archipelago |
| Baffin Island | |
| Boothia Peninsula | |
| Lancaster Sound | |
| Queen Elizabeth Islands | |
| Somerset Island | |
| UF | District of Franklin |
| RT | Eastern Canada |
| Western Canada | |
| Prince of Wales Island | |
| Banks Island | |
| Bathurst Island | |
| Victoria Island | |
| Cumberland Peninsula | |
| Read Bay Formation | |
| Otto Fjord | |
| Eureka Sound Formation | |
| Melville Island | |
| Melville Peninsula | |
| Peel Sound Formation | |
| SN | Northernmost district in Northwest Territories. |
| Franklin Mountains | |
|---|---|
| RT | Northwest Territories |
| Rocky Mountains | |
| Texas | |
| Vinton Canyon | |
| SN | Mackenzie District in Canada, and N of El Paso in the United States. Indexed with Northwest Territories and/or Texas as applicable. |
| Franklin Parish Louisiana | |
|---|---|
| BT | United States |
| .Louisiana | |
| ..Franklin Parish Louisiana | |
| franklinite | |
|---|---|
| BT | oxides |
| .franklinite | |
| RT | iron oxides |
| manganese minerals | |
| iron minerals | |
| Franz Josef Land | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Arkhangelsk Russian Federation | |
| ...Franz Josef Land | |
| BT | Russian Platform |
| .Franz Josef Land | |
| SN | Archipelago in Arctic Ocean. Part of Arkhangelsk Oblast. This term has multiple hierarchies. |
| Fraser Range | |
|---|---|
| BT | Australasia |
| .Australia | |
| ..Western Australia | |
| ...Fraser Range | |
| SN | SE of Kalgoorlie in S central Western Australia. |
| Fraser River | |
|---|---|
| RT | British Columbia |
| Fraser River delta | |
| SN | S central and SW British Columbia. Flows into Strait of Georgia S of Vancouver. May also occur in other locations. Indexed with British Columbia if applicable. |
| Fraser River delta | |
|---|---|
| BT | Canada |
| .Western Canada | |
| ..British Columbia | |
| ...Fraser River delta | |
| RT | Fraser River |
| SN | S British Columbia. Added to Thesaurus in 1989. |
| Frasnian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Devonian | |
| ....Upper Devonian | |
| .....Frasnian | |
| NT | Leduc Formation |
| RT | Greenland Gap Group |
| SN | Europe. Above Givetian, below Famennian. |
| Fraunhofer line discriminators | |
|---|---|
| RT | chemical analysis |
| instruments | |
| luminescence | |
| remote sensing | |
| SN | Added to Thesaurus in 1985. |
| Freda Sandstone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Mesoproterozoic | |
| ....Freda Sandstone | |
| RT | Wisconsin |
| Michigan | |
| Oronto Group | |
| SN | N Michigan and N Wisconsin. In Oronto Group. Overlies Nonesuch Shale; underlies Orienta Sandstone. Added to Thesaurus in 1989. |
| Frederick County Maryland | |
|---|---|
| BT | United States |
| .Maryland | |
| ..Frederick County Maryland | |
| SN | N Maryland. |
| Frederick County Virginia | |
|---|---|
| BT | United States |
| .Virginia | |
| ..Frederick County Virginia | |
| SN | N Virginia. Also search Winchester Virginia if applicable. |
| Fredericksburg Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Lower Cretaceous | |
| .....Fredericksburg Group | |
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Comanchean | |
| .....Fredericksburg Group | |
| RT | New Mexico |
| Oklahoma | |
| Texas | |
| Comanche Peak Limestone | |
| Edwards Formation | |
| SN | Comprises Finlay Limestone, Kiamichi Formation, Edwards Limestone, Paluxy Sand, Walnut Formation, Comanche Peak Limestone, Goodland Formation. S Oklahoma and Texas. This term has multiple hierarchies. |
| Fredericton New Brunswick | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Maritime Provinces | |
| ...New Brunswick | |
| ....Fredericton New Brunswick | |
| SN | SW New Brunswick. |
| Frederikshaab | |
|---|---|
| USE | Frederikshab Greenland |
| Frederikshab Greenland | |
|---|---|
| BT | Arctic region |
| .Greenland | |
| ..Frederikshab Greenland | |
| UF | Frederikshaab |
| SN | Settlement on Davis Strait in extreme SW Greenland. |
| free energy | |
|---|---|
| UF | Gibbs free energy |
| Helmholtz free energy | |
| RT | geochemistry |
| energy | |
| phase equilibria | |
| Kirchhoff integral | |
| thermodynamic properties | |
| free oscillations | |
|---|---|
| UF | free vibrations |
| RT | Earth |
| oscillations | |
| Free State South Africa | |
|---|---|
| BT | Africa |
| .Southern Africa | |
| ..South Africa | |
| ...Free State South Africa | |
| NT | Vredefort Dome |
| UF | Orange Free State South Africa |
| RT | Witwatersrand Supergroup |
| Orange River | |
| Klerksdorp Field | |
| Vaal River | |
| Witwatersrand | |
| SN | Province in E central South Africa. Before 1994, Orange Free State was used. |
| free vibrations | |
|---|---|
| USE | free oscillations |
| free-air anomalies | |
|---|---|
| RT | anomalies |
| Bouguer anomalies | |
| gravity methods | |
| SN | Before 1978, search free-air. |
| Freeborn County Minnesota | |
|---|---|
| BT | United States |
| .Minnesota | |
| ..Freeborn County Minnesota | |
| Freeport Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Pennsylvanian | |
| .....Freeport Formation | |
| RT | Pennsylvania |
| Allegheny Group | |
| SN | In Allegheny Group. Added to Thesaurus in 1985. |
| Freestone County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Freestone County Texas | |
| RT | Oakwood Dome |
| SN | E central Texas. |
| freeze-and-thaw action | |
|---|---|
| USE | frost action |
| freeze-thaw action | |
|---|---|
| USE | frost action |
| freezing | |
|---|---|
| RT | frost action |
| permafrost | |
| thawing | |
| SN | Added to Thesaurus in 1981. |
| Freiberg Germany | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Saxony Germany | |
| ....Freiberg Germany | |
| SN | City in Saxony, E Germany. |
| freibergite | |
|---|---|
| BT | sulfosalts |
| .sulfantimonites | |
| ..freibergite | |
| RT | silver ores |
| tetrahedrite | |
| SN | Steel gray variety of tetrahedrite containing silver. |
| Freiburg Germany | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Baden-Wurttemberg Germany | |
| ....Freiburg Germany | |
| UF | Freiburg im Breisgau |
| SN | City in Baden-Wurttemberg, SW Germany. |
| Freiburg im Breisgau | |
|---|---|
| USE | Freiburg Germany |
| freieslebenite | |
|---|---|
| BT | sulfosalts |
| .sulfantimonites | |
| ..freieslebenite | |
| Freites Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Miocene | |
| .....Freites Formation | |
| RT | Venezuela |
| Carapita Formation | |
| SN | Located in the states of Anzoategui and Monagas, N Venezuela. Added to Thesaurus in 1989. |
| Fremont County Colorado | |
|---|---|
| BT | United States |
| .Colorado | |
| ..Fremont County Colorado | |
| NT | Canon City Colorado |
| RT | Wet Mountains |
| SN | S central Colorado. |
| Fremont County Idaho | |
|---|---|
| BT | United States |
| .Idaho | |
| ..Fremont County Idaho | |
| RT | Yellowstone National Park |
| SN | E Idaho. |
| Fremont County Iowa | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Fremont County Iowa | |
| SN | Extreme SW Iowa. |
| Fremont County Wyoming | |
|---|---|
| BT | United States |
| .Wyoming | |
| ..Fremont County Wyoming | |
| RT | Wind River |
| Bighorn River | |
| Great Divide Basin | |
| Lost Soldier Field | |
| Gas Hills | |
| Granite Mountains | |
| Owl Creek Mountains | |
| Wind River basin | |
| Wind River Indian Reservation | |
| SN | W central Wyoming. |
| Fremouw Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Triassic | |
| ....Fremouw Formation | |
| RT | Antarctica |
| Queen Maud Range | |
| Ross Dependency | |
| Ross Ice Shelf | |
| Beardmore Glacier | |
| SN | Beardmore Glacier area near the Ross Ice Shelf at N end of Queen Maud Range in Ross Dependency. |
| French | |
|---|---|
| RT | catalogs |
| dictionaries | |
| glossaries | |
| lexicons | |
| SN | Used for studies about the language. |
| French Alps | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...French Alps | |
| BT | Europe |
| .Alps | |
| ..French Alps | |
| RT | Aiguilles Rouges |
| Graian Alps | |
| SN | This term has multiple hierarchies. Added to Thesaurus in 1981. |
| French Coast | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...French Coast | |
| SN | Along British Channel and Bay of Biscay on the Atlantic Ocean side and the Mediterranean Sea on the S. |
| French colonial possessions | |
|---|---|
| SN | Not a valid GeoRef index term after 1968. The variant form French territories was also used. |
| French Equatorial Africa | |
|---|---|
| SN | Not a valid GeoRef index term after 1959. Now index countries (Central African Republic, Chad, Congo, Gabon) as applicable. |
| French Guiana | |
|---|---|
| BT | South America |
| .French Guiana | |
| RT | Guiana Basin |
| Guyana Shield | |
| Guianas | |
| SN | Republic on NE South American coast. |
| French Indochina | |
|---|---|
| USE | Indochina |
| French Mid-Ocean Undersea Study | |
|---|---|
| USE | FAMOUS |
| French Polynesia | |
|---|---|
| BT | Oceania |
| .Polynesia | |
| ..French Polynesia | |
| NT | Austral Islands |
| Marquesas Islands | |
| Society Islands | |
| Tuamotu Islands | |
| RT | East Pacific Ocean Islands |
| Pacific Ocean | |
| SN | French overseas territory in S Pacific Ocean. Includes Marquesas, Society, Gambier, Tubuai, and Tuamotu islands. |
| French Pyrenees | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..France | |
| ...French Pyrenees | |
| BT | Europe |
| .Pyrenees | |
| ..French Pyrenees | |
| RT | Castillon Massif |
| Corbieres | |
| North Pyrenean Fault | |
| Querigut Massif | |
| SN | This term has multiple hierarchies. |
| French Somaliland | |
|---|---|
| USE | Djibouti |
| French West Africa | |
|---|---|
| SN | Not a valid GeoRef index term after 1959. Now index countries (Benin, Guinea, Ivory Coast, Mali, Mauritania, Niger, Senegal) as applicable. |
| Frenchman Springs Member | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Miocene | |
| .....Frenchman Springs Member | |
| RT | Washington |
| Oregon | |
| Columbia River Basalt Group | |
| Wanapum Basalt | |
| SN | Of Wanapum Basalt, which is part of the Columbia River Basalt Group. S and central Washington and NW Oregon. Added to Thesaurus in 1989. |
| frequency | |
|---|---|
| RT | broad-band spectra |
| Doppler effect | |
| frequency domain analysis | |
| frequency sounding | |
| periodicity | |
| recurrence interval | |
| seismic coherency | |
| SN | Used as a general term. |
| frequency distribution | |
|---|---|
| SN | Not a valid term for GeoRef. For statistical frequency distribution, use statistical distribution. For seismology or geophysical methods, use frequency. |
| frequency domain analysis | |
|---|---|
| RT | analysis |
| elastic waves | |
| electromagnetic methods | |
| frequency | |
| geophysical methods | |
| seismic coherency | |
| seismic methods | |
| seismology | |
| time domain analysis | |
| SN | Added to Thesaurus in 1985. |
| frequency sounding | |
|---|---|
| RT | deep sounding |
| frequency | |
| geophysical methods | |
| geophysical surveys | |
| sounding | |
| SN | Added to Thesaurus in 1982. |
| fresh-water environment | |
|---|---|
| RT | aquatic environment |
| brackish-water environment | |
| deep-water environment | |
| depositional environment | |
| ecology | |
| fluvial environment | |
| fresh water | |
| fresh-water sedimentation | |
| paleoecology | |
| sedimentation | |
| terrestrial environment | |
| SN | Before 1978, search fresh-water or fresh water. |
| fresh-water sedimentation | |
|---|---|
| BT | sedimentation |
| .fresh-water sedimentation | |
| RT | fresh-water environment |
| SN | Added to Thesaurus in 1981. |
| freshwater | |
|---|---|
| USE | fresh water |
| Fresno California | |
|---|---|
| BT | United States |
| .California | |
| ..Fresno County California | |
| ...Fresno California | |
| SN | City in central California. |
| Fresno County California | |
|---|---|
| BT | United States |
| .California | |
| ..Fresno County California | |
| NT | Coalinga California |
| Fresno California | |
| RT | Kesterson Reservoir |
| SN | In the San Joaquin Valley of central California. |
| Freyja Montes | |
|---|---|
| BT | Venus |
| .Freyja Montes | |
| SN | Mountains. |
| friction | |
|---|---|
| RT | friction angles |
| mechanical properties | |
| physical properties | |
| SN | Used as a general term. |
| friction angles | |
|---|---|
| RT | friction |
| shear strength | |
| slope stability | |
| soil mechanics | |
| SN | Added to Thesaurus in 1985. |
| Friendly Islands | |
|---|---|
| USE | Tonga |
| fringing reefs | |
|---|---|
| BT | reefs |
| .fringing reefs | |
| UF | shore reef |
| RT | barrier reefs |
| platform reefs | |
| Frio County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Frio County Texas | |
| SN | SW Texas. |
| Frio Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Oligocene | |
| .....Frio Formation | |
| RT | Louisiana |
| Texas | |
| SN | Consists of dark to very dark, varicolored shales and silty shales and massive to thin-bedded strata of sand and silty sand. Subsurface. |
| Friuli earthquake 1976 | |
|---|---|
| BT | earthquakes |
| .Friuli earthquake 1976 | |
| RT | Italy |
| Friuli-Venezia Giulia Italy | |
| SN | Epicenter in Friuli-Venezia Giulia, NE Italy. Added to Thesaurus in 1985. |
| Friuli-Venezia Giulia Italy | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Friuli-Venezia Giulia Italy | |
| NT | Tarvisio Italy |
| Trieste Italy | |
| RT | Carnic Alps |
| Friuli earthquake 1976 | |
| Tagliamento Valley | |
| Venetia | |
| SN | Autonomous region in NE Italy. |
| Frobisher Bay | |
|---|---|
| BT | Atlantic Ocean |
| .North Atlantic | |
| ..Frobisher Bay | |
| RT | Baffin Island |
| SN | Off SE Baffin Island, Arctic Canada. Added to Thesaurus in 1985. |
| Front Range | |
|---|---|
| RT | Colorado |
| Laramie Mountains | |
| Medicine Bow Mountains | |
| Pikes Peak | |
| Rocky Mountain National Park | |
| U. S. Rocky Mountains | |
| SN | A range of Rocky Mountains in N central Colorado. May also occur in other locations. Search in combination with state or province. Indexed with counties and Colorado and U. S. Rocky Mountains as applicable. |
| Front Range urban corridor | |
|---|---|
| BT | United States |
| .Colorado | |
| ..Front Range urban corridor | |
| Frontenac County Ontario | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Ontario | |
| ...Frontenac County Ontario | |
| Frontenac County Quebec | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Quebec | |
| ...Frontenac County Quebec | |
| Frontier County Nebraska | |
|---|---|
| BT | United States |
| .Nebraska | |
| ..Frontier County Nebraska | |
| Frontier Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Frontier Formation | |
| RT | Idaho |
| Utah | |
| Wyoming | |
| Montana | |
| Colorado | |
| Colorado Group | |
| Mancos Shale | |
| Tununk Member | |
| Wall Creek Member | |
| SN | In Colorado Group or Mancos Shale. S Montana, and W Wyoming, Colorado, Idaho, Utah. |
| froodite | |
|---|---|
| BT | bismuthides |
| .froodite | |
| Frosinone Italy | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Latium Italy | |
| ....Frosinone Italy | |
| SN | Town and province in the Apennines SE of Rome. |
| frost bursting | |
|---|---|
| USE | congelifraction |
| frost churning | |
|---|---|
| USE | cryoturbation |
| frost features | |
|---|---|
| BT | sedimentary structures |
| .bedding plane irregularities | |
| ..frost features | |
| UF | features, frost |
| RT | fossil ice wedges |
| frost heaving | |
|---|---|
| UF | heaving, frost |
| RT | permafrost |
| congelifraction | |
| cryoturbation | |
| patterned ground | |
| palsas | |
| frost shattering | |
|---|---|
| USE | congelifraction |
| frost splitting | |
|---|---|
| USE | congelifraction |
| frost stirring | |
|---|---|
| USE | cryoturbation |
| frost weathering | |
|---|---|
| USE | congelifraction |
| frost wedging | |
|---|---|
| USE | congelifraction |
| frozen ground | |
|---|---|
| UF | gelisol |
| ground, frozen | |
| merzlota | |
| taele | |
| tele | |
| tjaele | |
| RT | engineering geology |
| soils | |
| permafrost | |
| taliks | |
| soil mechanics | |
| frost action | |
| periglacial features | |
| ground ice | |
| palsas | |
| ice | |
| SN | Includes use in engineering geology. |
| Fruitland Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Fruitland Formation | |
| RT | New Mexico |
| Colorado | |
| SN | N New Mexico and SW Colorado. Added to Thesaurus in 1985. |
| fruits | |
|---|---|
| RT | soils |
| yields | |
| Frunze | |
|---|---|
| SN | No longer a valid term for GeoRef. See Bishkek Kyrgyzstan. |
| frustules | |
|---|---|
| RT | diatoms |
| SN | Refers to morphology of diatoms. |