Search SEDIS
| Data sets | Publications | Expeditions | Thesaurus |
u  |
|---|
| U-234 | |
|---|---|
| BT | isotopes |
| .radioactive isotopes | |
| ..U-234 | |
| BT | metals |
| .actinides | |
| ..uranium | |
| ...U-234 | |
| RT | U-234/Th-230 |
| U-238/U-234 | |
| SN | This term has multiple hierarchies. |
| U-234/Th-230 | |
|---|---|
| BT | isotopes |
| .radioactive isotopes | |
| ..U-234/Th-230 | |
| BT | metals |
| .actinides | |
| ..thorium | |
| ...U-234/Th-230 | |
| BT | metals |
| .actinides | |
| ..uranium | |
| ...U-234/Th-230 | |
| UF | Th-230/U-234 |
| RT | isotope ratios |
| Th-230 | |
| U-234 | |
| SN | This term has multiple hierarchies. |
| U-234/U-238 | |
|---|---|
| USE | U-238/U-234 |
| U-235 | |
|---|---|
| BT | isotopes |
| .radioactive isotopes | |
| ..U-235 | |
| BT | metals |
| .actinides | |
| ..uranium | |
| ...U-235 | |
| RT | U-238/U-235 |
| SN | This term has multiple hierarchies. |
| U-235/U-238 | |
|---|---|
| USE | U-238/U-235 |
| U-238 | |
|---|---|
| BT | isotopes |
| .radioactive isotopes | |
| ..U-238 | |
| BT | metals |
| .actinides | |
| ..uranium | |
| ...U-238 | |
| RT | U-238/Pb-204 |
| U-238/Th-230 | |
| U-238/Th-232 | |
| U-238/U-234 | |
| U-238/U-235 | |
| SN | This term has multiple hierarchies. |
| U-238/Pb-204 | |
|---|---|
| BT | isotopes |
| .radioactive isotopes | |
| ..U-238/Pb-204 | |
| BT | metals |
| .lead | |
| ..U-238/Pb-204 | |
| BT | metals |
| .actinides | |
| ..uranium | |
| ...U-238/Pb-204 | |
| RT | HIMU |
| Pb-204 | |
| U-238 | |
| SN | For isotopic ratio used in age determination, use U/Pb. This term has multiple hierarchies. |
| U-238/Pb-206 | |
|---|---|
| BT | isotopes |
| .radioactive isotopes | |
| ..U-238/Pb-206 | |
| BT | isotopes |
| .stable isotopes | |
| ..U-238/Pb-206 | |
| BT | metals |
| .lead | |
| ..U-238/Pb-206 | |
| BT | metals |
| .actinides | |
| ..uranium | |
| ...U-238/Pb-206 | |
| RT | isotope ratios |
| SN | As of 1989, for isotopic ratio used in age determination, use U/Pb. This term has multiple hierarchies. |
| U-238/Th-230 | |
|---|---|
| BT | isotopes |
| .radioactive isotopes | |
| ..U-238/Th-230 | |
| BT | metals |
| .actinides | |
| ..thorium | |
| ...U-238/Th-230 | |
| BT | metals |
| .actinides | |
| ..uranium | |
| ...U-238/Th-230 | |
| UF | Th-230/U-238 |
| RT | isotope ratios |
| Th-230 | |
| U-238 | |
| SN | This term has multiple hierarchies. |
| U-238/Th-232 | |
|---|---|
| BT | isotopes |
| .radioactive isotopes | |
| ..U-238/Th-232 | |
| BT | metals |
| .actinides | |
| ..thorium | |
| ...U-238/Th-232 | |
| BT | metals |
| .actinides | |
| ..uranium | |
| ...U-238/Th-232 | |
| UF | Th-232/U-238 |
| RT | Th-232 |
| U-238 | |
| SN | This term has multiple hierarchies. |
| U-238/U-234 | |
|---|---|
| BT | isotopes |
| .radioactive isotopes | |
| ..U-238/U-234 | |
| BT | metals |
| .actinides | |
| ..uranium | |
| ...U-238/U-234 | |
| UF | U-234/U-238 |
| RT | isotope ratios |
| U-234 | |
| U-238 | |
| SN | This term has multiple hierarchies. |
| U-238/U-235 | |
|---|---|
| BT | isotopes |
| .radioactive isotopes | |
| ..U-238/U-235 | |
| BT | metals |
| .actinides | |
| ..uranium | |
| ...U-238/U-235 | |
| UF | U-235/U-238 |
| RT | isotope ratios |
| U-235 | |
| U-238 | |
| SN | This term has multiple hierarchies. |
| U-stage | |
|---|---|
| USE | universal stage |
| U. S. Bureau of Land Management | |
|---|---|
| BT | government agencies |
| .U. S. Bureau of Land Management | |
| UF | BLM (U. S. Bureau of Land Management) |
| Bureau of Land Management | |
| RT | land management |
| public lands | |
| U. S. Bureau of Mines | |
|---|---|
| BT | government agencies |
| .U. S. Bureau of Mines | |
| UF | U.S. Bureau of Mines |
| USBM | |
| SN | Added to Thesaurus in 1985. |
| U. S. Department of Agriculture | |
|---|---|
| BT | government agencies |
| .U. S. Department of Agriculture | |
| UF | USDA |
| RT | agriculture |
| U. S. Department of Energy | |
|---|---|
| BT | government agencies |
| .U. S. Department of Energy | |
| UF | Department of Energy, U.S. |
| DOE | |
| U.S. Department of Energy | |
| SN | Added to Thesaurus in 1985. |
| U. S. Environmental Protection Agency | |
|---|---|
| BT | government agencies |
| .U. S. Environmental Protection Agency | |
| UF | Environmental Protection Agency, U.S. |
| EPA | |
| U.S. Environmental Protection Agency | |
| RT | Clean Air Act |
| Clean Water Act | |
| Safe Drinking Water Act | |
| Superfund | |
| SN | Added to Thesaurus in 1989. |
| U. S. Geological Survey | |
|---|---|
| BT | government agencies |
| .survey organizations | |
| ..U. S. Geological Survey | |
| UF | U.S. Geological Survey |
| United States Geological Survey | |
| RT | AMRAP |
| AMCOR | |
| RASA | |
| CRIB | |
| CUSMAP | |
| NWIS-II | |
| NAWQA | |
| USGS | |
| U. S. Nuclear Regulatory Commission | |
|---|---|
| BT | government agencies |
| .U. S. Nuclear Regulatory Commission | |
| UF | NRC |
| U.S. Nuclear Regulatory Commission | |
| SN | Added to Thesaurus in 1985. |
| U. S. Rocky Mountains | |
|---|---|
| BT | United States |
| .U. S. Rocky Mountains | |
| BT | North America |
| .Rocky Mountains | |
| ..U. S. Rocky Mountains | |
| NT | Absaroka Range |
| Big Belt Mountains | |
| Bighorn Mountains | |
| Bitterroot Range | |
| Bridger Range | |
| Flint Creek Range | |
| Gore Range | |
| Gravelly Range | |
| Laramie Mountains | |
| Little Belt Mountains | |
| Medicine Bow Mountains | |
| Owl Creek Mountains | |
| San Juan Mountains | |
| Sangre de Cristo Mountains | |
| Sawatch Range | |
| Spanish Peaks | |
| Tendoy Range | |
| Tobacco Root Mountains | |
| Uinta Mountains | |
| Wasatch Range | |
| Wet Mountains | |
| Wind River Range | |
| RT | Idaho |
| North American Cordillera | |
| Pioneer Mountains | |
| Northern Rocky Mountains | |
| Great Divide Basin | |
| Central Rocky Mountains | |
| Pikes Peak | |
| Crazy Mountains | |
| Elk Mountains | |
| Front Range | |
| Madison Range | |
| Mahogany Zone | |
| Mullen Creek-Nash Fork shear zone | |
| Mosquito Range | |
| Red Des | |
| SN | Before 1981, search Rocky Mountains AND United States. This term has multiple hierarchies. Indexed with states as applicable. Added to Thesaurus in 1981. |
| U. S. S. R. | |
|---|---|
| SN | Not a valid term for GeoRef after 1971. See USSR or Commonwealth of Independent States. Used in subfile G. |
| U. S. Virgin Islands | |
|---|---|
| BT | Caribbean region |
| .West Indies | |
| ..Antilles | |
| ...Lesser Antilles | |
| ....Virgin Islands | |
| .....U. S. Virgin Islands | |
| NT | Saint Croix |
| Saint Thomas | |
| RT | United States |
| Saint John Island | |
| SN | Virgin Islands of the United States. Before 1981, search Virgin Islands. Added to Thesaurus in 1981. |
| U.S. Bureau of Mines | |
|---|---|
| USE | U. S. Bureau of Mines |
| U.S. Department of Energy | |
|---|---|
| USE | U. S. Department of Energy |
| U.S. Environmental Protection Agency | |
|---|---|
| USE | U. S. Environmental Protection Agency |
| U.S. Exclusive Economic Zone | |
|---|---|
| USE | United States Exclusive Economic Zone |
| U.S. Geological Survey | |
|---|---|
| USE | U. S. Geological Survey |
| U.S. Nuclear Regulatory Commission | |
|---|---|
| USE | U. S. Nuclear Regulatory Commission |
| U/He | |
|---|---|
| RT | absolute age |
| helium | |
| isotope ratios | |
| uranium | |
| SN | Isotopic ratio used in age determination. |
| U/Pb | |
|---|---|
| UF | uranium-lead |
| RT | absolute age |
| Pb-210 | |
| Pb/Pb | |
| Pb/Th | |
| isotope ratios | |
| thermochronology | |
| lead | |
| uranium | |
| SN | Isotopic ratio used in age determination. |
| U/Th | |
|---|---|
| USE | Th/U |
| U/Th/Pb | |
|---|---|
| RT | absolute age |
| isotope ratios | |
| lead | |
| Th/U | |
| thorium | |
| uranium | |
| uranium disequilibrium | |
| SN | Isotopic ratio used in age determination. |
| Uaua Brazil | |
|---|---|
| BT | South America |
| .Brazil | |
| ..Bahia Brazil | |
| ...Uaua Brazil | |
| SN | Village in NE Bahia, E Brazil. |
| Ubangi-Shari | |
|---|---|
| USE | Central African Republic |
| Ube coal field | |
|---|---|
| BT | nshu |
| .Yamaguchi Japan | |
| ..Ube coal field | |
| UF | Ube Coalfield |
| RT | coal fields |
| SN | E of Shimonoseki in SW Honshu. |
| Ube Coalfield | |
|---|---|
| USE | Ube coal field |
| Uchaly Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Bashkortostan Russian Federation | |
| ...Uchaly Russian Federation | |
| SN | Village in E Bashkortostan, Southern Urals in SE European Russian Federation. Before 1993, Uchaly Russian Republic was also used. This term has multiple hierarchies. |
| Uchi Lake | |
|---|---|
| BT | Canada |
| .Eastern Canada | |
| ..Ontario | |
| ...Kenora District Ontario | |
| ....Uchi Lake | |
| SN | NW Ontario. After 1993, use Uchi Lake Ontario for the village nearby. Also search Uchi. |
| Uchur River basin | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Uchur River basin | |
| BT | Asia |
| .Uchur River basin | |
| RT | Yakutia Russian Federation |
| Khabarovsk Russian Federation | |
| SN | Central W Khabarovsk Kray and SE Yakutia in E Siberia. Before 1978, also search Uchur; Uchur River. This term has multiple hierarchies. |
| Uda River | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Uda River | |
| BT | Asia |
| .Uda River | |
| UF | Chuma River |
| RT | Irkutsk Russian Federation |
| SN | Rises in Irkutsk Oblast and flows into Angara River just above its junction with the Yenisei River in S central Siberia. Also search Uda. This term has multiple hierarchies. |
| Udachnaya Pipe | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Yakutia Russian Federation | |
| ...Udachnaya Pipe | |
| RT | Siberian Platform |
| Anabar Shield | |
| SN | Kimberlite pipe. This term has multiple hierarchies. Added to Thesaurus in 1989. |
| Udachnaya Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Yakutia Russian Federation | |
| ...Udachnaya Russian Federation | |
| SN | Village just S of the Arctic Circle in W central Yakutia. Before 1993, Udachnaya Russian Republic was also used. This term has multiple hierarchies. |
| Udaipur India | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Rajasthan India | |
| ....Udaipur India | |
| SN | City and district in S Rajasthan, NW India. |
| Udmurt Russian Federation | |
|---|---|
| USE | Udmurtia Russian Federation |
| Udmurtia Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Udmurtia Russian Federation | |
| BT | Europe |
| .Udmurtia Russian Federation | |
| UF | Udmurt Russian Federation |
| RT | Ural region |
| SN | Former Udmurt Autonomous Soviet Sovialist Republic. W of the Urals and NE of Kazan. Before 1993, Udmurtia Russian Republic was also used. This term has multiple hierarchies. |
| Udokan Mountains | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Udokan Mountains | |
| BT | Asia |
| .Udokan Mountains | |
| SN | In area where Amur Oblast, Chita Oblast and Yakutia meet NE of Lake Baikal. Also search Udokan. This term has multiple hierarchies. |
| Udokan Series | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Udokan Series | |
| RT | Russian Federation |
| Yakutia Russian Federation | |
| Amur region | |
| Chita Russian Federation | |
| SN | Paleoproterozoic. An aggregate of metamorphised sedimentary rocks including schists, phyllites, sandstones, and crystalline limestone. In NW Amur Oblast, N Chita Oblast, and S Yakutia NE of Lake Baikal. |
| Ufa Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Bashkortostan Russian Federation | |
| ...Ufa Russian Federation | |
| SN | City in Bashkortostan, Southern Urals. Before 1993, Ufa Russian Republic was also used. This term has multiple hierarchies. |
| Ufaley Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Chelyabinsk Russian Federation | |
| ...Ufaley Russian Federation | |
| UF | Nizhniy Ufaley Russian Federation |
| SN | Town in NW Chelyabinsk Oblast in the Central Urals of W Siberia. Before 1993, Ufaley Russian Republic was also used. Indexed with regions as applicable. |
| Uganda | |
|---|---|
| BT | Africa |
| .East Africa | |
| ..Uganda | |
| NT | Bukusu |
| Kakuto Uganda | |
| Moroto Mountain | |
| RT | Nile River |
| East African Rift | |
| Mount Baker | |
| Lake Albert | |
| Lake Edward | |
| Lake Victoria | |
| SN | Former British protectorate which became independent in 1962. |
| Uinta Basin | |
|---|---|
| BT | United States |
| .Uinta Basin | |
| UF | Uintah Basin |
| RT | Utah |
| Colorado | |
| SN | NW Colorado and NE Utah. Indexed with states as applicable. |
| Uinta County Wyoming | |
|---|---|
| BT | United States |
| .Wyoming | |
| ..Uinta County Wyoming | |
| RT | Moxa Arch |
| SN | Extreme SW Wyoming. |
| Uinta Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....upper Eocene | |
| ......Uinta Formation | |
| RT | Utah |
| Colorado | |
| SN | Colorado and NE Utah. Added to Thesaurus in 1985. |
| Uinta Mountain Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Uinta Mountain Group | |
| RT | Utah |
| Colorado | |
| SN | NE Utah and NW Colorado. Added to Thesaurus in 1985. |
| Uinta Mountains | |
|---|---|
| BT | United States |
| .U. S. Rocky Mountains | |
| ..Uinta Mountains | |
| RT | Utah |
| Wyoming | |
| SN | Range chiefly in NE Utah. This term has multiple hierarchies. Indexed with counties and states as applicable. |
| Uintah Basin | |
|---|---|
| USE | Uinta Basin |
| Uintah County Utah | |
|---|---|
| BT | United States |
| .Utah | |
| ..Uintah County Utah | |
| RT | Dinosaur National Monument |
| SN | NE Utah. |
| uintahite | |
|---|---|
| USE | gilsonite |
| uintaite | |
|---|---|
| USE | gilsonite |
| Uintan | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....Uintan | |
| SN | North America. Middle to upper Eocene. Above Bridgerian; below Duchesnian. Added to Thesaurus in 1989. |
| Ukrainian Carpathians | |
|---|---|
| BT | Europe |
| .Ukraine | |
| ..Ukrainian Carpathians | |
| BT | Europe |
| .Carpathians | |
| ..Ukrainian Carpathians | |
| NT | Rakhov Massif |
| UF | Soviet Carpathians |
| RT | Russian Platform |
| Eastern Carpathians | |
| SN | E extension of the Carpathians in SW Ukraine. This term has multiple hierarchies. |
| Ukrainian Shield | |
|---|---|
| BT | Europe |
| .Ukraine | |
| ..Ukrainian Shield | |
| BT | Russian Platform |
| .Ukrainian Shield | |
| UF | Volyno-Azov Massif |
| SN | Extends from the S Polesye in the NW to the Azov Sea. This term has multiple hierarchies. |
| Ukrainian Syneclise | |
|---|---|
| BT | Europe |
| .Ukrainian Syneclise | |
| BT | Russian Platform |
| .Ukrainian Syneclise | |
| RT | Ukraine |
| SN | This term has multiple hierarchies. Indexed with former Soviet republics as applicable. Added to Thesaurus in 1981. |
| Ulan Bator Mongolia | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Mongolia | |
| ...Ulan Bator Mongolia | |
| UF | Urga Mongolia |
| SN | City in N central Mongolia. |
| Ulatisian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....middle Eocene | |
| ......Ulatisian | |
| SN | North America. Above Penutian, below Narizian. |
| ulexite | |
|---|---|
| BT | borates |
| .ulexite | |
| UF | boronatrocalcite |
| natroborocalcite | |
| Ulianovsk Russian Federation | |
|---|---|
| USE | Ulyanovsk Russian Federation |
| Ulkan Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Irkutsk Russian Federation | |
| ...Ulkan Russian Federation | |
| SN | Village NW of N Lake Baikal in Irkutsk Oblast. Before 1993, Ulkan Russian Republic was also used. This term has multiple hierarchies. |
| ullmannite | |
|---|---|
| BT | sulfides |
| .ullmannite | |
| UF | nickel-antimony glance |
| RT | willyamite |
| Ulmaceae | |
|---|---|
| BT | Plantae |
| .Spermatophyta | |
| ..Angiospermae | |
| ...Dicotyledoneae | |
| ....Ulmaceae | |
| Ulmus | |
|---|---|
| BT | Plantae |
| .Spermatophyta | |
| ..Angiospermae | |
| ...Dicotyledoneae | |
| ....Ulmus | |
| SN | Genus. |
| Ulsan South Korea | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Korea | |
| ...South Korea | |
| ....Ulsan South Korea | |
| SN | Town in S South Korea. |
| Ulster | |
|---|---|
| SN | Not a valid term for GeoRef as of 1993. See Northern Ireland. |
| Ulster County New York | |
|---|---|
| BT | United States |
| .New York | |
| ..Ulster County New York | |
| NT | Shawangunk Mountains |
| SN | S New York. |
| Ultisols | |
|---|---|
| BT | soils |
| .Ultisols | |
| NT | Paleudults |
| RT | soil group |
| ultrabasic composition | |
|---|---|
| USE | ultramafic composition |
| ultrabasic rocks | |
|---|---|
| SN | Not a valid term for GeoRef. Before 1971, included use in subfiles E, G, N and B. Now use ultramafics or ultramafic composition. |
| ultrabasite | |
|---|---|
| BT | sulfides |
| .ultrabasite | |
| UF | diaphorite |
| SN | For ultramafic rocks, use ultramafics or ultramafic composition. |
| ultramafic | |
|---|---|
| SN | A valid term through 1977. After 1977, use ultramafic composition. |
| ultramafic composition | |
|---|---|
| UF | ultrabasic composition |
| RT | igneous rocks |
| composition | |
| mafic composition | |
| SN | Before 1978, search ultramafic; ultrabasic. |
| ultramafic family | |
|---|---|
| SN | As of 1981, no longer a valid term for GeoRef. Use ultramafics or peridotites as applicable. |
| ultramafic rocks | |
|---|---|
| SN | A valid term through 1976. Use ultramafics or ultramafic composition. |
| ultramafics | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..ultramafics | |
| NT | ariegite |
| augitite | |
| bronzitite | |
| chromitite | |
| clinopyroxenite | |
| diallagite | |
| eulysite | |
| garnet pyroxenite | |
| griquaite | |
| hornblendite | |
| kimberlite | |
| komatiite | |
| limburgite | |
| meimechite | |
| olivinite | |
| orthopyroxenite | |
| peridotites | |
| pyroxenite | |
| websterite | |
| RT | leucitite |
| melilitite | |
| nephelinite | |
| alpine-type features | |
| ankaramite | |
| picrite | |
| picrite porphyry | |
| ophiolite | |
| SN | Before 1981, search ultramafic family, ultramafic rocks. |
| ultrametamorphism | |
|---|---|
| BT | metamorphism |
| .ultrametamorphism | |
| ultramylonite | |
|---|---|
| BT | metamorphic rocks |
| .mylonites | |
| ..ultramylonite | |
| UF | ultramylonites |
| RT | faults |
| SN | Added to Thesaurus in 1989. |
| ultramylonites | |
|---|---|
| USE | ultramylonite |
| ultrapotassic composition | |
|---|---|
| RT | alkalic composition |
| composition | |
| potassic composition | |
| SN | Added to Thesaurus in 1995. |
| ultrasonic methods | |
|---|---|
| RT | acoustical methods |
| borehole televiewers | |
| geophysical surveys | |
| methods | |
| geophysical methods | |
| SN | Added to Thesaurus in 1985. |
| ultrastructure | |
|---|---|
| RT | paleontology |
| petrography | |
| planar deformation features | |
| SN | Before 1978, also search microstructure. Also see deformation. |
| ultraviolet light | |
|---|---|
| USE | ultraviolet radiation |
| ultraviolet radiation | |
|---|---|
| BT | electromagnetic radiation |
| .ultraviolet radiation | |
| UF | ultraviolet light |
| ultraviolet rays | |
| UV radiation | |
| ultraviolet rays | |
|---|---|
| USE | ultraviolet radiation |
| ultraviolet spectra | |
|---|---|
| BT | spectra |
| .ultraviolet spectra | |
| UF | ultraviolet spectrum |
| UV spectra | |
| RT | spectroscopy |
| dosimetry | |
| ultraviolet spectroscopy | |
| SN | Before 1978, also search ultraviolet. |
| ultraviolet spectroscopy | |
|---|---|
| BT | spectroscopy |
| .ultraviolet spectroscopy | |
| RT | chemical analysis |
| analysis | |
| ultraviolet spectra | |
| SN | Before 1978, also search spectroscopy AND ultraviolet. |
| ultraviolet spectrum | |
|---|---|
| USE | ultraviolet spectra |
| Ulu-Tau | |
|---|---|
| BT | Commonwealth of Independent States |
| .Kazakhstan | |
| ..Ulu-Tau | |
| UF | Ulutau |
| RT | Dzhezkazgan Kazakhstan |
| SN | Range W of the Kazakh Hills in Dzhezkazgan Oblast in central Kazakhstan. This term has multiple hierarchies. |
| Ulutau | |
|---|---|
| USE | Ulu-Tau |
| ulvospinel | |
|---|---|
| BT | oxides |
| .ulvospinel | |
| RT | iron oxides |
| titanium oxides | |
| spinel group | |
| Ulyanovsk Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Ulyanovsk Russian Federation | |
| BT | Europe |
| .Ulyanovsk Russian Federation | |
| UF | Simbirsk Russian Federation |
| Ulianovsk Russian Federation | |
| SN | Oblast and also city on the right bank of the Volga River S of Kazan. Before 1993, Ulyanovsk Russian Republic was also used. This term has multiple hierarchies. |
| Umanak Greenland | |
|---|---|
| BT | Arctic region |
| .Greenland | |
| ..Umanak Greenland | |
| SN | Settlement on S shore of Umanak Fjord midway up W coast. |
| umangite | |
|---|---|
| BT | selenides |
| .umangite | |
| Umaria India | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Madhya Pradesh India | |
| ....Umaria India | |
| SN | Town in NE Madhya Pradesh, central India. |
| Umatilla County Oregon | |
|---|---|
| BT | United States |
| .Oregon | |
| ..Umatilla County Oregon | |
| Umba River | |
|---|---|
| RT | Karelia |
| Karelia Russian Federation | |
| Kenya | |
| Tanzania | |
| SN | From Kenya flows into Indian Ocean just N of Tanzanian border. May also occur in Karelia Russian Federation. Also search Umba and country as applicable. Indexed with countries as applicable. |
| Umberatana Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Umberatana Group | |
| RT | South Australia |
| Australia | |
| SN | E South Australia. Added to Thesaurus in 1989. |
| Umbria Italy | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Umbria Italy | |
| NT | Perugia Italy |
| Terni Italy | |
| RT | Tiber Valley |
| SN | Autonomous region in central Italy. |
| Umbriel Satellite | |
|---|---|
| RT | satellites |
| Uranus | |
| Voyager Program | |
| SN | One of the satellites of Uranus. Before 1989, also search Umbriel AND Uranus. Added to Thesaurus in 1989. |
| Umiat Field | |
|---|---|
| BT | United States |
| .Alaska | |
| ..Northern Alaska | |
| ...Umiat Field | |
| RT | oil and gas fields |
| North Slope | |
| SN | Oil field. North Slope, N Alaska. Added to Thesaurus in 1989. |
| Umm al Qaiwain | |
|---|---|
| USE | Umm al-Qaiwain |
| Umm al-Qaiwain | |
|---|---|
| BT | Asia |
| .Arabian Peninsula | |
| ..United Arab Emirates | |
| ...Umm al-Qaiwain | |
| UF | Umm al Qaiwain |
| SN | Emirate. One of federation of 7 states at S end of Persian Gulf. |
| umohoite | |
|---|---|
| BT | molybdates |
| .umohoite | |
| Umpqua Formation | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Eocene | |
| .....Umpqua Formation | |
| RT | California |
| Oregon | |
| SN | Lower to middle Eocene. Predominantly medium-grained sandstone with some shaly and conglomerate layers. In N California and SW Oregon. |
| Umrer India | |
|---|---|
| BT | Asia |
| .Indian Peninsula | |
| ..India | |
| ...Madhya Pradesh India | |
| ....Umrer India | |
| SN | Town in central Madhya Pradesh, central India. |
| un |
|---|
| Unalaska Island | |
|---|---|
| BT | United States |
| .Alaska | |
| ..Southwestern Alaska | |
| ...Aleutian Islands | |
| ....Unalaska Island | |
| NT | Makushin |
| SN | In Fox Islands, Aleutian Islands, SW Alaska. Added to Thesaurus in 1989. |
| uncertainty | |
|---|---|
| RT | errors |
| geostatistics | |
| probability | |
| reliability | |
| statistical analysis | |
| SN | Also index specific type of analysis if applicable. Added to Thesaurus in 1998. |
| UNCLOS | |
|---|---|
| USE | Law of the Sea |
| Uncompahgre Plateau | |
|---|---|
| USE | Uncompahgre Uplift |
| Uncompahgre Uplift | |
|---|---|
| BT | United States |
| .Uncompahgre Uplift | |
| UF | Uncompahgre Plateau |
| RT | New Mexico |
| Utah | |
| Colorado | |
| Paradox Basin | |
| SN | Indexed with states as applicable. Added to Thesaurus in 1989. |
| unconfined aquifers | |
|---|---|
| BT | aquifers |
| .unconfined aquifers | |
| RT | ground water |
| shallow depth | |
| water table | |
| shallow aquifers | |
| surficial aquifers | |
| unconformities | |
|---|---|
| NT | angular unconformities |
| erosional unconformities | |
| UF | unconformity |
| RT | stratigraphy |
| hardground | |
| exhumation | |
| sequence stratigraphy | |
| lithostratigraphy | |
| stratigraphic gaps | |
| unconformity | |
|---|---|
| USE | unconformities |
| unconformity-type deposits | |
|---|---|
| RT | mineral deposits, genesis |
| uranium ores | |
| unconsolidated materia |
|---|
| unconsolidated materials | |
|---|---|
| RT | coarse-grained materials |
| compactness | |
| consolidation | |
| fines | |
| materials | |
| particulate materials | |
| sediments | |
| soil mechanics | |
| soils | |
| SN | Before 1978, search unconsolidated. |
| UNCTAD | |
|---|---|
| UF | United Nations Conference on Trade and Development |
| RT | associations |
| economics | |
| international cooperation | |
| United Nations | |
| SN | Acronym. Usually out-of-scope for GeoRef. Added to Thesaurus in 1981. |
| und |
|---|
| Unda Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Chita Russian Federation | |
| ...Unda Russian Federation | |
| SN | Village in S Chita Oblast in Transbaikalia. Before 1993, Unda Russian Republic was also used. This term has multiple hierarchies. |
| undation | |
|---|---|
| RT | crust |
| crustal thickening | |
| tectonics | |
| underclay | |
|---|---|
| UF | coal clay |
| root clay | |
| seat clay | |
| seat earth | |
| underearth | |
| RT | clay |
| fireclay | |
| coal seams | |
| underearth | |
|---|---|
| USE | underclay |
| underground | |
|---|---|
| SN | A valid term through 1977. After 1977, use underground space. |
| underground cavities | |
|---|---|
| RT | caverns |
| caves | |
| solution cavities | |
| geomorphology | |
| underground space | |
| volcanic features | |
| SN | Use solution cavities if applicable. Also see underground space for engineering geology. Added to Thesaurus in 1993. |
| underground channels | |
|---|---|
| RT | channels |
| drainage | |
| infiltration galleries | |
| irrigation | |
| ground water | |
| underground installations | |
| waterways | |
| SN | Added to Thesaurus in 1981. |
| underground disposal | |
|---|---|
| UF | underground waste disposal |
| RT | waste disposal |
| radioactive waste | |
| waste disposal sites | |
| waste management | |
| underground installations | |
| landfills | |
| far-field | |
| near-field | |
| underground storage | |
| underground storage tanks | |
| SN | Added to Thesaurus in 1985. |
| underground installations | |
|---|---|
| UF | installations, underground |
| RT | mines |
| land subsidence | |
| seismic response | |
| rock mechanics | |
| permafrost | |
| geologic hazards | |
| seepage | |
| design | |
| construction | |
| feasibility studies | |
| foundations | |
| excavations | |
| pipelines | |
| leaking underground storage tanks | |
| far-field | |
| near-field | |
| gas storage | |
| oil storage | |
| site explora | |
| SN | Used for geological studies on underground cavities (natural or otherwise), excluding tunnels. |
| underground mines | |
|---|---|
| USE | underground mining |
| underground mining | |
|---|---|
| BT | mining |
| .underground mining | |
| UF | subsurface mining |
| underground mines | |
| RT | mines |
| mining geology | |
| cut-and-fill mining | |
| longwall mining | |
| underground installations | |
| roof control | |
| SN | Added to Thesaurus in 1982. |
| Underground Research Laboratory | |
|---|---|
| RT | Lac du Bonnet Batholith |
| Pinawa Manitoba | |
| waste disposal | |
| SN | Canada's URL is located at (N50#DG15'W095#DG50'), about 10 kilometers north of Pinawa Manitoba, Whiteshell Research Area, W end of Whiteshell Provincial Park. In the Lac du Bonnet Batholith, it is site of nuclear waste disposal investigations. May occur i |
| underground space | |
|---|---|
| UF | space, underground |
| RT | land use |
| underground cavities | |
| underground installations | |
| underground storage | |
| underground storage | |
|---|---|
| UF | subsurface storage |
| RT | waste disposal |
| underground installations | |
| storage | |
| leaking underground storage tanks | |
| far-field | |
| near-field | |
| underground disposal | |
| gas storage | |
| oil storage | |
| underground storage tanks | |
| high-level waste | |
| low-level waste | |
| Stripa region | |
| underground space | |
| SN | Added to Thesaurus in 1982. |
| underground storage tanks | |
|---|---|
| RT | gas storage |
| gasoline | |
| leaking underground storage tanks | |
| oil storage | |
| petroleum products | |
| storage | |
| underground disposal | |
| underground storage | |
| waste disposal | |
| SN | Use leaking underground storage tanks if applicable. Added to Thesaurus in 1995. |
| underground streams | |
|---|---|
| RT | caverns |
| caves | |
| exsurgence | |
| hydrogeology | |
| hydrology | |
| karst | |
| resurgence | |
| springs | |
| streams | |
| tributaries | |
| geomorphology | |
| ground water | |
| unsaturated zone | |
| SN | Added to Thesaurus in 1982. |
| underground waste disposal | |
|---|---|
| USE | underground disposal |
| underground water | |
|---|---|
| USE | ground water |
| Underhill Formation | |
|---|---|
| RT | Lower Cambrian |
| Neoproterozoic | |
| Vermont | |
| SN | Indexed with ages as applicable. Added to Thesaurus in 1989. |
| underplating | |
|---|---|
| UF | subcretion |
| RT | extension tectonics |
| plate tectonics | |
| rifting | |
| accretionary wedges | |
| active margins | |
| subduction zones | |
| lithosphere | |
| continental crust | |
| oceanic crust | |
| underthrust faults | |
| SN | Used to refer to different concepts in plate tectonics: In areas of rifting and thinning of continental crust, used to describe emplacement of basaltic magma at the base of the continental crust. In oceanic subduction zones, used to refer to accretion of |
| underpressure | |
|---|---|
| RT | fluid pressure |
| hydrostatic pressure | |
| pore pressure | |
| pressure | |
| reservoir properties | |
| underthrust faults | |
|---|---|
| BT | faults |
| .underthrust faults | |
| RT | underplating |
| SN | Before 1978, search underthrust AND faults. |
| UNDP | |
|---|---|
| UF | United Nations Development Programme |
| RT | associations |
| United Nations | |
| SN | Added to Thesaurus in 1981. |
| undulatory extinction | |
|---|---|
| RT | microscope methods |
| optical extinction | |
| SN | Added to Thesaurus in 1981. |
| Ungava | |
|---|---|
| BT | Canada |
| .Ungava | |
| UF | New Quebec |
| RT | Quebec |
| Labrador | |
| New Quebec Crater | |
| SN | Region including Quebec N of Eastmain River and SW Labrador. Indexed with Labrador and/or Quebec as applicable. |
| Ungava Crater | |
|---|---|
| USE | New Quebec Crater |
| Ungulata | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Ungulata | |
| RT | Condylarthra |
| Amblypoda | |
| Artiodactyla | |
| Perissodactyla | |
| Dinocerata | |
| Litopterna | |
| Pantodonta | |
| Pyrotheria | |
| Xenungulata | |
| SN | Informal group name for the hoofed mammals. Includes Amblypoda, Artiodactyla, Condylarthra, Dinocerata, Litopterna, Pantodonta, Perissodactyla, Pyrotheria, and Xenungulata. |
| uniaxial tests | |
|---|---|
| RT | biaxial tests |
| testing | |
| triaxial tests | |
| engineering geology | |
| SN | Before 1978, search uniaxial. |
| Unicoi County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Unicoi County Tennessee | |
| UNIDO | |
|---|---|
| UF | United Nations Industrial Development Organization |
| RT | associations |
| United Nations | |
| SN | Added to Thesaurus in 1981. |
| uniformitarianism | |
|---|---|
| UF | actualism |
| RT | sedimentation |
| deposition | |
| biologic evolution | |
| stratigraphy | |
| geology | |
| catastrophism | |
| creationism | |
| history | |
| Union County Arkansas | |
|---|---|
| BT | United States |
| .Arkansas | |
| ..Union County Arkansas | |
| SN | S Arkansas. |
| Union County Florida | |
|---|---|
| BT | United States |
| .Florida | |
| ..Union County Florida | |
| SN | N Florida. |
| Union County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Union County Georgia | |
| SN | N Georgia. |
| Union County Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Union County Illinois | |
| SN | S Illinois. |
| Union County Indiana | |
|---|---|
| BT | Indiana |
| .Union County Indiana | |
| SN | E Indiana. |
| Union County Iowa | |
|---|---|
| BT | United States |
| .Iowa | |
| ..Union County Iowa | |
| SN | S Iowa. |
| Union County Kentucky | |
|---|---|
| BT | United States |
| .Kentucky | |
| ..Union County Kentucky | |
| SN | W Kentucky. |
| Union County Mississippi | |
|---|---|
| BT | United States |
| .Mississippi | |
| ..Union County Mississippi | |
| SN | N Mississippi. |
| Union County New Jersey | |
|---|---|
| BT | United States |
| .New Jersey | |
| ..Union County New Jersey | |
| RT | Watchung Mountains |
| Union County New Mexico | |
|---|---|
| BT | United States |
| .New Mexico | |
| ..Union County New Mexico | |
| RT | Pasamonte Meteorite |
| SN | Extreme NE New Mexico. |
| Union County North Carolina | |
|---|---|
| BT | United States |
| .North Carolina | |
| ..Union County North Carolina | |
| SN | S North Carolina. |
| Union County Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Union County Ohio | |
| SN | Central Ohio. |
| Union County Oregon | |
|---|---|
| BT | United States |
| .Oregon | |
| ..Union County Oregon | |
| RT | Wallowa Mountains |
| SN | NE Oregon. |
| Union County Pennsylvania | |
|---|---|
| BT | United States |
| .Pennsylvania | |
| ..Union County Pennsylvania | |
| SN | Central Pennsylvania. |
| Union County South Carolina | |
|---|---|
| BT | United States |
| .South Carolina | |
| ..Union County South Carolina | |
| SN | N South Carolina. |
| Union County South Dakota | |
|---|---|
| BT | United States |
| .South Dakota | |
| ..Union County South Dakota | |
| SN | SE South Dakota. |
| Union County Tennessee | |
|---|---|
| BT | United States |
| .Tennessee | |
| ..Union County Tennessee | |
| SN | NE Tennessee. |
| Union Islands | |
|---|---|
| USE | Tokelau |
| Union of Soviet Socialist Republics | |
|---|---|
| SN | Not a valid GeoRef index term after 1968. See USSR or Commonwealth of Independent States. |
| Union Parish Louisiana | |
|---|---|
| BT | United States |
| .Louisiana | |
| ..Union Parish Louisiana | |
| Unionidae | |
|---|---|
| BT | Invertebrata |
| .Mollusca | |
| ..Bivalvia | |
| ...Unionidae | |
| unit cell | |
|---|---|
| UF | cell, unit |
| RT | crystal structure |
| crystal systems | |
| lattice | |
| lattice parameters | |
| United Arab Emirates | |
|---|---|
| BT | Asia |
| .Arabian Peninsula | |
| ..United Arab Emirates | |
| NT | Abu Dhabi |
| Ajman | |
| Dubai | |
| Fujairah | |
| Ras al-Khaimah | |
| Sharjah | |
| Umm al-Qaiwain | |
| UF | Trucial Coast |
| Trucial Oman | |
| RT | Hanifa Formation |
| Khuff Formation | |
| Shuaiba Formation | |
| Arab Formation | |
| Middle East | |
| Near East | |
| Semail Ophiolite | |
| Thamama Group | |
| SN | Federation of 7 states which was achieved in 1972. Formerly known as Trucial States, Trucial Oman, or Trucial Coast. Not strictly equivalent to Trucial Coast, but replaces Trucial Coast. |
| United Kingdom | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| NT | Great Britain |
| Isle of Man | |
| Northern Ireland | |
| RT | Aberystwyth Grits |
| British Virgin Islands | |
| Ballantrae Complex | |
| Speeton Clay | |
| Barton Beds | |
| Barwell Meteorite | |
| Bembridge Marls | |
| British Geological Survey | |
| Skiddaw Slates | |
| London Clay | |
| Lower Greensand | |
| Sherwood Sandstone | |
| Oxford Clay | |
| Penrhyn Slate | |
| Shap Granite | |
| Upper Old | |
| SN | Comprising Great Britain and Northern Ireland. Indexed with political divisions as applicable. |
| United Nations | |
|---|---|
| RT | associations |
| International Monetary Fund | |
| UNCTAD | |
| UNDP | |
| UNIDO | |
| World Bank | |
| United Nations Conference on Trade and Development | |
|---|---|
| USE | UNCTAD |
| United Nations Convention on the Law of the Sea | |
|---|---|
| USE | Law of the Sea |
| United Nations Development Programme | |
|---|---|
| USE | UNDP |
| United Nations Industrial Development Organization | |
|---|---|
| USE | UNIDO |
| United States Exclusive Economic Z |
|---|
| United States Exclusive Economic Zone | |
|---|---|
| UF | U.S. Exclusive Economic Zone |
| RT | United States |
| ocean floors | |
| economics | |
| Gulf of Mexico | |
| North Pacific | |
| North Atlantic | |
| offshore | |
| mineral exploration | |
| exploration | |
| policy | |
| Law of the Sea | |
| Exclusive Economic Zone | |
| strategic minerals | |
| SN | Before 1985, also search EEZ or Exclusive Economic Zone AND United States. Added to Thesaurus in 1985. |
| United States Geological Survey | |
|---|---|
| USE | U. S. Geological Survey |
| units, stratigraphic | |
|---|---|
| USE | stratigraphic units |
| univariate analysis | |
|---|---|
| BT | statistical analysis |
| .univariate analysis | |
| RT | analysis |
| bivariate analysis | |
| multivariate analysis | |
| SN | Added to Thesaurus in 1989. |
| Universal Soil Loss Equation | |
|---|---|
| UF | USLE |
| RT | erosion |
| soils | |
| equations | |
| mathematical methods | |
| runoff | |
| soil erosion | |
| erodibility | |
| SN | Added to Thesaurus in 1989. |
| universal stage | |
|---|---|
| UF | Fedorov stage |
| stage, universal | |
| U-stage | |
| RT | structural analysis |
| microscope methods | |
| ore microscopy | |
| universities | |
|---|---|
| USE | academic institutions |
| University of Arizona | |
|---|---|
| RT | academic institutions |
| Arizona | |
| SN | In Tucson. |
| University of Bonn | |
|---|---|
| RT | academic institutions |
| Germany | |
| SN | In Bonn, North Rhine-Westphalia. |
| University of California | |
|---|---|
| RT | academic institutions |
| Los Alamos National Laboratory | |
| California | |
| SN | Has geoscience departments located in Berkeley, Davis, Los Angeles, Riverside, San Diego, Santa Barbara and Santa Cruz. |
| University of Cambridge | |
|---|---|
| USE | Cambridge University |
| University of Louvain | |
|---|---|
| RT | academic institutions |
| Belgium | |
| SN | In Louvain E of Brussels. |
| University of Lund | |
|---|---|
| RT | academic institutions |
| Sweden | |
| SN | In Lund, Malmohus, extreme S Sweden. |
| University of Michigan | |
|---|---|
| RT | academic institutions |
| Michigan | |
| SN | In Ann Arbor W of Detroit. |
| University of Pennsylvania | |
|---|---|
| RT | academic institutions |
| Pennsylvania | |
| SN | In Philadelphia. |
| University of Rome | |
|---|---|
| RT | academic institutions |
| Italy | |
| SN | In Rome. |
| University of Tokyo | |
|---|---|
| UF | Tokyo Imperial University |
| RT | academic institutions |
| Japan | |
| SN | In Tokyo. |
| University of Wisconsin | |
|---|---|
| RT | academic institutions |
| Wisconsin | |
| SN | Has geoscience departments located in Madison, Eau Claire, Green Bay, Wausau (Marathon County campus), Milwaukee, Oshkosh, Kenosha (Parkside campus), Platteville, River Falls, Stevens Point, Superior and Whitewater. |
| Unkar Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Unkar Group | |
| RT | Arizona |
| SN | Grand Canyon Series. Divided into (descending) Dox Sandstone, Shinumo Quartzite, Hakatai Shale, Bass Limestone, and Hotuata Conglomerate. In N Arizona. |
| unmixing | |
|---|---|
| USE | exsolution |
| unsaturated zone | |
|---|---|
| UF | non-saturated zone |
| vadose zone | |
| zone of aeration | |
| RT | soils |
| ground water | |
| hydrogeology | |
| SUTRA | |
| preferential flow | |
| capillary water | |
| saturated zone | |
| water table | |
| underground streams | |
| water regimes | |
| Green-Ampt model | |
| DRAINMOD | |
| infiltration | |
| Richards equation | |
| SN | Subsurface zone with pressure less than atmospheric. In GeoRef, it is not considered ground water. Added to Thesaurus in 1981. |
| Unst | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..United Kingdom | |
| ...Great Britain | |
| ....Scotland | |
| .....Shetland Islands | |
| ......Unst | |
| SN | Northernmost large island of the Shetland Islands. This term has multiple hierarchies. |
| unsteady flow | |
|---|---|
| UF | transient flow |
| RT | hydrology |
| hydrodynamics | |
| hydraulics | |
| fluid dynamics | |
| radial flow | |
| steady flow | |
| SN | Added to Thesaurus in 1982. |
| Unstrut River | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Unstrut River | |
| RT | Saxony-Anhalt Germany |
| Thuringia Germany | |
| SN | Tributary of the Saale River. Also search Unstrut. Indexed with states as applicable. |
| Unzen | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Japan | |
| ...Kyushu | |
| ....Nagasaki Japan | |
| .....Unzen | |
| UF | Unzen Volcano |
| RT | volcanoes |
| SN | Active volcano. In Unzen National Park, Nagasaki Prefecture on central Shimabar Peninsula E of Nagasaki. |
| Unzen Volcano | |
|---|---|
| USE | Unzen |
| Uonuma Group | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Uonuma Group | |
| RT | Lower Pleistocene |
| upper Pliocene | |
| Honshu | |
| Japan | |
| SN | Upper Pliocene to lower Pleistocene. Composed of Oguni and Tsukayama formations. In NW Honshu. Indexed with ages as applicable. |
| up#Magdalenian#Martin Formation#Mousterian#Omo Group#Osaka Grou |
|---|
| uplands | |
|---|---|
| RT | highlands |
| mesas | |
| plateaus | |
| geomorphology | |
| SN | Use more specific term if applicable. Added to Thesaurus in 1993. |
| uplifts | |
|---|---|
| RT | domes |
| epeirogeny | |
| exhumation | |
| glacial rebound | |
| isostatic rebound | |
| neotectonics | |
| raised beaches | |
| subsidence | |
| swells | |
| tectonics | |
| vertical movements | |
| upper Albian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Lower Cretaceous | |
| .....Albian | |
| ......upper Albian | |
| SN | Added to Thesaurus in 1985. |
| upper Archean | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Archean | |
| ...upper Archean | |
| NT | Amitsoq Gneiss |
| Qorqut Granite | |
| RT | Ventersdorp Supergroup |
| Fortescue Group | |
| Levack Gneiss | |
| SN | Added to Thesaurus in 1985. |
| upper atmosphere | |
|---|---|
| SN | As of 1993, no longer a valid term for GeoRef. Usually out-of-scope. |
| Upper Austria | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Austria | |
| ...Upper Austria | |
| NT | Gosau Austria |
| Linz Austria | |
| Weyer Austria | |
| RT | Salzach River |
| Salzkammergut | |
| Enns Valley | |
| North Austrian Crystallines | |
| Totes Gebirge | |
| Upper Bavaria Germany | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Bavaria Germany | |
| ....Upper Bavaria Germany | |
| NT | Berchtesgaden Germany |
| Kreuth Germany | |
| Munich Germany | |
| RT | Bavarian Alps |
| SN | An administrative division in the extreme S in which Munich, the Bavarian Alps and Salzburg Alps are located. |
| upper boundary | |
|---|---|
| SN | A valid general term through 1976. Now use stratigraphic boundary for stratigraphic meaning. |
| upper Campanian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Campanian | |
| ......upper Campanian | |
| SN | Added to Thesaurus in 1985. |
| upper Cenomanian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Cenomanian | |
| ......upper Cenomanian | |
| SN | Above Albian; below Turonian. Added to Thesaurus in 1989. |
| upper Cenozoic | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...upper Cenozoic | |
| NT | Chesapeake Group |
| Matuyama Chron | |
| RT | Quaternary |
| upper crust | |
|---|---|
| BT | crust |
| .upper crust | |
| RT | lower crust |
| middle crust | |
| crustal thickening | |
| upper Devensian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Quarternary | |
| ....Pleistocene | |
| .....Upper Pleistocene | |
| ......Devensian | |
| .......upper Devensian | |
| Upper Franconia Germany | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Bavaria Germany | |
| ....Upper Franconia Germany | |
| RT | Franconia |
| SN | Administration division in NE Bavaria. Part of old historical region of Franconia. |
| upper Gondwana | |
|---|---|
| USE | upper Gondwana System |
| upper Gondwana System | |
|---|---|
| BT | Gondwana System |
| .upper Gondwana System | |
| UF | upper Gondwana |
| RT | Mesozoic |
| Triassic | |
| Jurassic | |
| Cretaceous | |
| Lower Cretaceous | |
| Gondwana | |
| Athgarh Sandstone | |
| lower Gondwana System | |
| SN | Peninsular India. Added to Thesaurus in 1985. |
| upper Holocene | |
|---|---|
| BT | locene |
| .upper Holocene | |
| upper Liassic | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Jurassic | |
| ....Lower Jurassic | |
| .....upper Liassic | |
| NT | Toarcian |
| SN | Added to Thesaurus in 1981. |
| Upper Lusatia | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Saxony Germany | |
| ....Upper Lusatia | |
| RT | Doberlug Germany |
| Lusatia | |
| Weissenberg Germany | |
| SN | That part of Lusatia in E Germany. |
| upper Maestrichtian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Upper Cretaceous | |
| .....Senonian | |
| ......Maestrichtian | |
| .......upper Maestrichtian | |
| SN | Added to Thesaurus in 1985. |
| upper mantle | |
|---|---|
| BT | mantle |
| .upper mantle | |
| UF | outer mantle |
| RT | 410-km discontinuity |
| 670-km discontinuity | |
| asthenosphere | |
| lower crust | |
| pyrolite | |
| Sn-waves | |
| lateral heterogeneity | |
| lower mantle | |
| upper Mesozoic | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...upper Mesozoic | |
| RT | middle Mesozoic |
| Upper Mississippi Valley | |
|---|---|
| BT | United States |
| .Mississippi Valley | |
| ..Upper Mississippi Valley | |
| RT | Iowa |
| Missouri | |
| Illinois | |
| Wisconsin | |
| Minnesota | |
| SN | That part of the Mississippi Valley N of Cairo, Illinois. Indexed with states as applicable. |
| upper Neogene | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....upper Neogene | |
| RT | Pliocene |
| SN | Added to Thesaurus in 1989. |
| Upper Old |
|---|
| Upper Old Red Sandstone | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Devonian | |
| ....Upper Old Red Sandstone | |
| RT | United Kingdom |
| Great Britain | |
| SN | Represented by Nairn, Boghole, Alves-Scaat Craig, Rosebrae, Plateau, and Portishead beds; by Quartz Conglomerate; and by Farlow Sandstone. In Great Britain. |
| Upper Palatinate | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Bavaria Germany | |
| ....Upper Palatinate | |
| NT | Windischeschenbach Germany |
| UF | Oberpfalz |
| RT | Palatinate |
| SN | That part of the historical region of the Palatinate located in E Bavaria, SE Germany. |
| upper Paleocene | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....Paleocene | |
| .....upper Paleocene | |
| NT | Landenian |
| Thanetian | |
| Tiffanian | |
| RT | lower Paleocene |
| Ewekoro Formation | |
| upper Paleogene | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Paleogene | |
| ....upper Paleogene | |
| RT | Eocene |
| Oligocene | |
| SN | Added to Thesaurus in 1985. |
| upper Paleolithic | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Stone Age | |
| ....Paleolithic | |
| .....upper Paleolithic | |
| RT | Pleistocene |
| archaeology | |
| Quaternary | |
| SN | Archaeological classification. Added to Thesaurus in 1985. |
| Upper Peninsula, Michigan | |
|---|---|
| USE | Michigan Upper Peninsula |
| upper Precambrian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..upper Precambrian | |
| NT | Proterozoic |
| RT | Yudomian |
| Famatina System | |
| Porsanger Dolomite Formation | |
| Puncoviscana Formation | |
| Sparagmite Group | |
| upper Proterozoic | |
|---|---|
| USE | Neoproterozoic |
| upper Quaternary | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Quaternary | |
| ....upper Quaternary | |
| NT | Baltic Glaciation |
| Brunhes Chron | |
| Bull Lake Glaciation | |
| Pinedale Glaciation | |
| Yoldia Sea | |
| Upper Rhine | |
|---|---|
| USE | Upper Rhine Valley |
| Upper Rhine Graben | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Rhine Graben | |
| ...Upper Rhine Graben | |
| Upper Rhine Valley | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Upper Rhine Valley | |
| UF | Upper Rhine |
| RT | Baden-Wurttemberg Germany |
| Rhineland-Palatinate Germany | |
| Hesse Germany | |
| Rhine Valley | |
| SN | As of 1981, restricted to that part of the Rhine Valley between Basel and Mainz in W Germany. Before 1981, included part of France. Indexed with states as applicable. |
| upper Riphean | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Neoproterozoic | |
| ....Riphean | |
| .....upper Riphean | |
| SN | Added to Thesaurus in 1985. |
| Upper Silesia | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Poland | |
| ...Upper Silesia | |
| UF | Upper Silesian area |
| RT | Silesia |
| Lower Silesia | |
| Silesian coal basin | |
| Upper Silesian coal basin | |
| SN | The eastern part of former German Silesia plus Polish Silesia lying SE of Lower Silesia centering on Katowice and Cracow. |
| Upper Silesia coal basin | |
|---|---|
| USE | Upper Silesian coal basin |
| Upper Silesian area | |
|---|---|
| USE | Upper Silesia |
| Upper Silesian Basin | |
|---|---|
| USE | Upper Silesian coal basin |
| Upper Silesian coal basin | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Poland | |
| ...Katowice Poland | |
| ....Upper Silesian coal basin | |
| UF | Upper Silesia coal basin |
| Upper Silesian Basin | |
| Upper Silesian coal field | |
| RT | coal fields |
| Silesian coal basin | |
| Upper Silesia | |
| SN | N foot of the W Beskid Mountains in Upper Silesia. |
| Upper Silesian coal field | |
|---|---|
| USE | Upper Silesian coal basin |
| Upper Silurian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Silurian | |
| ....Upper Silurian | |
| NT | Bloomsburg Formation |
| Cayugan | |
| Ludlovian | |
| Pridolian | |
| Salina Group | |
| Wristen Formation | |
| RT | Lower Silurian |
| Keyser Limestone | |
| Middle Silurian | |
| Downtonian | |
| Rondout Formation | |
| Tura Formation | |
| Wenlock Limestone | |
| SN | Wenlockian was considered a narrower term before 1993. |
| upper Sinian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Precambrian | |
| ..Proterozoic | |
| ...Sinian | |
| ....upper Sinian | |
| SN | China. Added to Thesaurus in 1989. |
| upper Tertiary | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Tertiary | |
| ....upper Tertiary | |
| NT | Poznan Clays |
| RT | Neogene |
| Akchagylian | |
| lower Tertiary | |
| Gauss Chron | |
| Gilbert Chron | |
| Matuyama Chron | |
| middle Tertiary | |
| upper Tournaisian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Mississippian | |
| .....Tournaisian | |
| ......upper Tournaisian | |
| SN | Added to Thesaurus in 1985. |
| Upper Tunguska | |
|---|---|
| USE | Angara River |
| upper Visean | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Mississippian | |
| .....Visean | |
| ......upper Visean | |
| SN | Added to Thesaurus in 1985. |
| Upper Volta | |
|---|---|
| USE | Burkina Faso |
| upper Weichselian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Quarternary | |
| ....Pleistocene | |
| .....Upper Pleistocene | |
| ......Weichselian | |
| .......upper Weichselian | |
| NT | Allerod |
| Older Dryas | |
| Younger Dryas | |
| SN | W Europe. Added to Thesaurus in 1989. |
| upper Wisconsinan | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Quarternary | |
| ....Pleistocene | |
| .....Upper Pleistocene | |
| ......Wisconsinan | |
| .......upper Wisconsinan | |
| SN | Added to Thesaurus in 1985. |
| Upper Zaire Congo Democratic Republic | |
|---|---|
| BT | Africa |
| .Central Africa | |
| ..Congo Democratic Republic | |
| ...Upper Zaire Congo Democratic Republic | |
| NT | Kilo Congo Democratic Republic |
| UF | Haut-Zaire Congo Democratic Republic |
| RT | Lake Albert |
| SN | The province of Haut-Zaire in NW Congo Democratic Republic. Before 1998, Upper Zaire was also used. |
| Uppsala Sweden | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..Scandinavia | |
| ...Sweden | |
| ....Uppsala Sweden | |
| SN | County and city in E Sweden. |
| upright folds | |
|---|---|
| BT | folds |
| .upright folds | |
| RT | anticlines |
| anticlinoria | |
| antiform folds | |
| vertical orientation | |
| SN | Added to Thesaurus in 1993. |
| Upshur County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Upshur County Texas | |
| SN | NE Texas. |
| Upshur County West Virginia | |
|---|---|
| BT | United States |
| .West Virginia | |
| ..Upshur County West Virginia | |
| SN | Central West Virginia. |
| Upson County Georgia | |
|---|---|
| BT | United States |
| .Georgia | |
| ..Upson County Georgia | |
| Upton County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Upton County Texas | |
| SN | W Texas. |
| upwelling | |
|---|---|
| RT | contaminant plumes |
| currents | |
| downwelling | |
| mantle plumes | |
| ocean circulation | |
| ocean currents | |
| oceanography | |
| plumes | |
| sea water | |
| subsidence | |
| Urach Germany | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Germany | |
| ...Baden-Wurttemberg Germany | |
| ....Urach Germany | |
| SN | Central Baden-Wurttemberg, in the Swabian Alb. SE of Stuttgart. Also search Urach region. |
| Urach region | |
|---|---|
| SN | No longer a valid term for GeoRef. See Urach Germany. |
| Ural Mountains | |
|---|---|
| USE | Urals |
| Ural Range | |
|---|---|
| USE | Urals |
| Ural region | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Ural region | |
| UF | Urals Region |
| RT | Bashkortostan Russian Federation |
| Chelyabinsk Russian Federation | |
| Orenburg Russian Federation | |
| Sverdlovsk Russian Federation | |
| Perm Russian Federation | |
| Kurgan Russian Federation | |
| Udmurtia Russian Federation | |
| SN | A mining and industrial region on both sides of the Central Urals comprising the Chelyabinsk, Sverdlovsk, Kurgan, Orenburg, and Perm oblasts; and Bashkortostan and Udmurtia. |
| Ural River | |
|---|---|
| BT | Commonwealth of Independent States |
| .Ural River | |
| RT | Russian Federation |
| Kazakhstan | |
| SN | Rises at S end of Urals and flows into the Caspian Sea. Indexed with former Soviet republics as applicable. |
| Ural-Tau | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Ural-Tau | |
| BT | Commonwealth of Independent States |
| .Urals | |
| ..Southern Urals | |
| ...Ural-Tau | |
| SN | Low, water-divide mountain range in E Southern Urals. This term has multiple hierarchies. |
| Ural-Volga Interfluve | |
|---|---|
| USE | Volga-Ural region |
| Ural-Volga region | |
|---|---|
| USE | Volga-Ural region |
| Uralian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Carboniferous | |
| ....Upper Carboniferous | |
| .....Uralian | |
| SN | Russia. Above Gzhelian, below Sakmarian of Permian. |
| Uralian Foreland | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Uralian Foreland | |
| BT | Commonwealth of Independent States |
| .Urals | |
| ..Uralian Foreland | |
| SN | The western slope and foothills of the Urals. This term has multiple hierarchies. |
| uralitization | |
|---|---|
| BT | metasomatism |
| .uralitization | |
| RT | hydrothermal alteration |
| metamorphism | |
| Urals | |
|---|---|
| BT | Commonwealth of Independent States |
| .Urals | |
| NT | Central Urals |
| Mugodzhar Hills | |
| Northern Urals | |
| Novaya Zemlya | |
| Polar Urals | |
| Southern Urals | |
| Uralian Foreland | |
| UF | Ural Mountains |
| Ural Range | |
| RT | Russian Federation |
| Kazakhstan | |
| Eurasia | |
| Kama River | |
| SN | Mountain range extending from the Kara Sea in the N to W Kazakhstan in the S separating Europe from Asia. Indexed with ranges as applicable. |
| Urals Region | |
|---|---|
| USE | Ural region |
| uraninite | |
|---|---|
| BT | oxides |
| .uraninite | |
| RT | uranium ores |
| pitchblende | |
| uranium | |
|---|---|
| BT | metals |
| .actinides | |
| ..uranium | |
| NT | U-234 |
| U-234/Th-230 | |
| U-235 | |
| U-238 | |
| U-238/Pb-204 | |
| U-238/Pb-206 | |
| U-238/Th-230 | |
| U-238/Th-232 | |
| U-238/U-234 | |
| U-238/U-235 | |
| RT | Io/U |
| isotopes | |
| uranium ores | |
| lithophile elements | |
| HIMU | |
| U/He | |
| Th/U | |
| U/Pb | |
| U/Th/Pb | |
| uranium minerals | |
| radium | |
| uranium disequilibrium | |
| SN | Chemical element. Use uranium ores for uranium as a commodity. |
| uranium disequilibrium | |
|---|---|
| UF | uranium-series method |
| RT | absolute age |
| isotopes | |
| uranium | |
| U/Th/Pb | |
| thermal ionization mass spectroscopy | |
| uranium minerals | |
|---|---|
| RT | minerals |
| ore minerals | |
| uranium | |
| uranium ores | |
| SN | May be used under commodities (list C). |
| uranium-lead | |
|---|---|
| USE | U/Pb |
| uranium-series method | |
|---|---|
| USE | uranium disequilibrium |
| uranium-thorium | |
|---|---|
| USE | Th/U |
| uranophane | |
|---|---|
| BT | silicates |
| .orthosilicates | |
| ..nesosilicates | |
| ...uranophane | |
| RT | uranium ores |
| urban environment | |
|---|---|
| RT | ecology |
| environmental geology | |
| human ecology | |
| pollution | |
| sedimentation | |
| urbanization | |
| SN | Added to Thesaurus in 1989. |
| urban planning | |
|---|---|
| RT | environmental geology |
| land use | |
| planning | |
| regional planning | |
| urbanization | |
| Urbana Illinois | |
|---|---|
| BT | United States |
| .Illinois | |
| ..Champaign County Illinois | |
| ...Urbana Illinois | |
| SN | City in E central Illinois. |
| Urbana Ohio | |
|---|---|
| BT | United States |
| .Ohio | |
| ..Champaign County Ohio | |
| ...Urbana Ohio | |
| SN | City in W central Ohio. |
| urbanization | |
|---|---|
| RT | conservation |
| environmental geology | |
| land use | |
| rural environment | |
| urban environment | |
| urban planning | |
| ureilite | |
|---|---|
| BT | meteorites |
| .stony meteorites | |
| ..achondrites | |
| ...ureilite | |
| NT | Haveroe Meteorite |
| SN | Added to Thesaurus in 1981. |
| Urengoi Field | |
|---|---|
| USE | Urengoy Field |
| Urengoy Field | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Tyumen Russian Federation | |
| ...Yamal-Nenets Russian Federation | |
| ....Urengoy Field | |
| UF | Urengoi Field |
| RT | oil and gas fields |
| Siberian Lowland | |
| SN | West of Pur River, central Siberian Lowland. Also search Urengoy. This term has multiple hierarchies. Added to Thesaurus in 1998. |
| Urga Mongolia | |
|---|---|
| USE | Ulan Bator Mongolia |
| Urgonian | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Mesozoic | |
| ...Cretaceous | |
| ....Lower Cretaceous | |
| .....Urgonian | |
| SN | Europe. |
| Uri Switzerland | |
|---|---|
| BT | Europe |
| .Central Europe | |
| ..Switzerland | |
| ...Uri Switzerland | |
| RT | Bernese Alps |
| Oberalp Pass | |
| SN | Canton in central Switzerland. |
| Urodela | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Amphibia | |
| ....Lissamphibia | |
| .....Caudata | |
| ......Urodela | |
| SN | Order. |
| Ursidae | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Carnivora | |
| .......Fissipeda | |
| ........Ursidae | |
| NT | Ursus |
| SN | Family. |
| Ursus | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Carnivora | |
| .......Fissipeda | |
| ........Ursidae | |
| .........Ursus | |
| NT | Ursus spelaeus |
| SN | Genus. |
| Ursus spelaeus | |
|---|---|
| BT | Chordata |
| .Vertebrata | |
| ..Tetrapoda | |
| ...Mammalia | |
| ....Theria | |
| .....Eutheria | |
| ......Carnivora | |
| .......Fissipeda | |
| ........Ursidae | |
| .........Ursus | |
| ..........Ursus spelaeus | |
| SN | Species. |
| urtite | |
|---|---|
| BT | igneous rocks |
| .plutonic rocks | |
| ..gabbros | |
| ...alkali gabbros | |
| ....urtite | |
| RT | ijolite |
| melteigite | |
| Uruguay | |
|---|---|
| BT | South America |
| .Uruguay | |
| NT | Montevideo Uruguay |
| Rio Negro Uruguay | |
| RT | San Gregorio Formation |
| Tubarao Group | |
| Rio de la Plata | |
| Urup | |
|---|---|
| UF | Urup Island |
| RT | Russian Federation |
| volcanoes | |
| Kuril Islands | |
| SN | Volcanic island in S central Kuril Islands NE of Japan. Before 1993, also used for copper mining district in N Caucasus. After 1993, see Urup mining district if applicable. Indexed with Kuril Islands as applicable. |
| Urup Island | |
|---|---|
| USE | Urup |
| Urup mining district | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Northern Caucasus | |
| ...Urup mining district | |
| RT | copper ores |
| Greater Caucasus | |
| SN | Copper mining district in N Caucasus. This term has multiple hierarchies. Added to Thesaurus in 1993. |
| Usa Series | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Cambrian | |
| ....Lower Cambrian | |
| .....Usa Series | |
| RT | Russian Federation |
| SN | Includes marble plus dolomites interspersed with beds of siliceous schist. In the Kuznetsk Alatau mountain region of Kemerovo Oblast and Khakass Autonomous Oblast E of Novosibirsk. |
| USBM | |
|---|---|
| USE | U. S. Bureau of Mines |
| USDA | |
|---|---|
| USE | U. S. Department of Agriculture |
| uses | |
|---|---|
| SN | A valid term through 1976. Use applications or utilization (for natural resources or economic studies. |
| USGS | |
|---|---|
| RT | U. S. Geological Survey |
| SN | Use for documents published by the U. S. Geological Survey. For discussions about the Survey and its activities, use U. S. Geological Survey. Added to Thesaurus in 1985. |
| USLE | |
|---|---|
| USE | Universal Soil Loss Equation |
| Uspenski Kazakhstan | |
|---|---|
| USE | Uspenskiy Kazakhstan |
| Uspenskiy Kazakhstan | |
|---|---|
| BT | Commonwealth of Independent States |
| .Kazakhstan | |
| ..Karaganda Kazakhstan | |
| ...Uspenskiy Kazakhstan | |
| UF | Uspenski Kazakhstan |
| SN | Town in Karaganda Oblast in E central Kazakhstan. This term has multiple hierarchies. |
| USSR | |
|---|---|
| SN | No longer a valid term for GeoRef. As of 1993, see Commonwealth of Independent States or individual former constituent republics now represented by Armenia, Azerbaijan, Belarus, Estonia, Georgian Republic, Kazakhstan, Kyrgyzstan, Latvia, Lithuania, Moldov |
| USSR Academy of Sciences | |
|---|---|
| BT | government agencies |
| .USSR Academy of Sciences | |
| RT | Russian Federation |
| Commonwealth of Independent States | |
| SN | In Moscow. |
| UST | |
|---|---|
| SN | Not a valid term for GeoRef. Use leaking underground storage tanks if applicable. Or see underground storage tanks if applicable. |
| Ust-Kut Russian Federation | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Irkutsk Russian Federation | |
| ...Ust-Kut Russian Federation | |
| SN | Town in N central Irkutsk Oblast NW of Lake Baikal. Before 1993, Ust-Kut Russian Republic was also used. This term has multiple hierarchies. |
| Ust-Urt | |
|---|---|
| USE | Ustyurt |
| Ust-Urt Plateau | |
|---|---|
| USE | Ustyurt |
| Ust-Yenisei Basin | |
|---|---|
| BT | Commonwealth of Independent States |
| .Russian Federation | |
| ..Krasnoyarsk Russian Federation | |
| ...Taymyr Dolgan-Nenets Russian Federation | |
| ....Ust-Yenisei Basin | |
| SN | That part of the lower Yenisei Basin from Ust-Port to Yenisei Bay which constitutes a drowned river mouth or estuary. Located in NW Taymyr-Nenets National Okrug. This term has multiple hierarchies. |
| Ustica Island | |
|---|---|
| BT | Europe |
| .Southern Europe | |
| ..Italy | |
| ...Sicily Italy | |
| ....Ustica Island | |
| SN | Small island in the Tyrrhenian Sea NW of Sicily. Also search Ustica. |
| Ustron Belarus | |
|---|---|
| BT | Europe |
| .Belarus | |
| ..Ustron Belarus | |
| SN | Village in central Belarus. This term has multiple hierarchies. |
| Ustyurt | |
|---|---|
| BT | Commonwealth of Independent States |
| .Ustyurt | |
| BT | Asia |
| .Central Asia | |
| ..Ustyurt | |
| UF | Ust-Urt |
| Ust-Urt Plateau | |
| RT | Kazakhstan |
| Uzbekistan | |
| Turkmenia | |
| Barsakelmes | |
| SN | Desert plateau extending from the Caspian Sea to the Aral Sea. This term has multiple hierarchies. Indexed with former Soviet republics as applicable. |
| Usu | |
|---|---|
| BT | kkaido |
| .Usu | |
| UF | Usu Volcano |
| RT | volcanoes |
| SN | On NE Uchiura Bay in SW Hokkaido. |
| Usu Volcano | |
|---|---|
| USE | Usu |
| Usuginu Conglomerate | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Permian | |
| ....Upper Permian | |
| .....Usuginu Conglomerate | |
| RT | Honshu |
| Japan | |
| SN | Includes large boulders of limestone, compact slate, sandstone, granite, and porphyrite. In N Honshu. |
| Usuki Japan | |
|---|---|
| BT | Asia |
| .Far East | |
| ..Japan | |
| ...Kyushu | |
| ....Usuki Japan | |
| SN | Town on Bungo Strait in NE Kyushu, S Japan. |
| ut-Rhin France | |
|---|---|
| NT | Mulhouse Basin |
| Sainte-Marie-aux-Mines France | |
| Utah County Utah | |
|---|---|
| BT | United States |
| .Utah | |
| ..Utah County Utah | |
| NT | Fairfield Utah |
| Payson Utah | |
| Provo Utah | |
| RT | Jordan River |
| Jordan Valley | |
| SN | N central Utah. |
| utahite | |
|---|---|
| USE | jarosite |
| Ute Creek | |
|---|---|
| RT | Canadian River |
| New Mexico | |
| SN | Flows into the Canadian River in NE New Mexico. Also in other locations. Indexed with county or region as applicable. |
| ute-Garonne France | |
|---|---|
| NT | Toulouse France |
| ute-Loire France | |
|---|---|
| NT | Lac du Bouchet |
| Velay | |
| ute-Savoie France | |
|---|---|
| NT | Annecy France |
| Argentiere Glacier | |
| Rumilly France | |
| ute-Vienne France | |
|---|---|
| NT | Rochechouart France |
| Saint-Sylvestre Massif | |
| utes-Alpes France | |
|---|---|
| NT | Briancon France |
| utes-Pyrenees France | |
|---|---|
| NT | Gavarnie France |
| Lourdes France | |
| Utica Shale | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Paleozoic | |
| ...Ordovician | |
| ....Upper Ordovician | |
| .....Utica Shale | |
| RT | Ontario |
| New York | |
| Michigan | |
| SN | Consists of Nowadaga, Loyal Creek, Hopkinson, Holland, and Patent members. |
| utilization | |
|---|---|
| RT | consumption |
| depletion | |
| economic geology | |
| land loss | |
| land use | |
| natural resources | |
| supply | |
| water use | |
| SN | As of 1982, restricted to economic geology. As of 1995, may be used for natural resources except for land use. May be used with commodity terms (list C) or natural resources. |
| Utopia Planitia | |
|---|---|
| BT | Mars |
| .Utopia Planitia | |
| SN | Low plain. Named for classical albedo feature. |
| Utrecht Netherlands | |
|---|---|
| BT | Europe |
| .Western Europe | |
| ..Netherlands | |
| ...Utrecht Netherlands | |
| SN | Province. Also a city S of Amsterdam. |
| Uttarkashi earthquake 1991 | |
|---|---|
| BT | earthquakes |
| .Uttarkashi earthquake 1991 | |
| RT | India |
| Uttar Pradesh India | |
| Garhwal Himalayas | |
| SN | Epicenter in Garhwal Himalayas, Uttar Pradesh India. |
| UV radiation | |
|---|---|
| USE | ultraviolet radiation |
| UV spectra | |
|---|---|
| USE | ultraviolet spectra |
| Uvalde County Texas | |
|---|---|
| BT | United States |
| .Texas | |
| ..Uvalde County Texas | |
| RT | Edwards Aquifer |
| SN | SW Texas. |
| Uvalde Gravel | |
|---|---|
| BT | Chronostratigraphic Units |
| .Phanerozoic | |
| ..Cenozoic | |
| ...Neogene | |
| ....Pliocene | |
| .....Uvalde Gravel | |
| RT | Texas |
| SN | Consists almost wholly of rounded flat cobbles, boulders, and occasional limestone pebbles. In Texas. |
| uvarovite | |
|---|---|
| BT | silicates |
| .orthosilicates | |
| ..nesosilicates | |
| ...garnet group | |
| ....uvarovite | |
| UF | onvarovite |
| Uvigerina | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Rotaliina | |
| ....Buliminacea | |
| .....Uvigerinidae | |
| ......Uvigerina | |
| NT | Uvigerina peregrina |
| RT | microfossils |
| SN | Genus. Indexed with microfossils if applicable. |
| Uvigerina peregrina | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Rotaliina | |
| ....Buliminacea | |
| .....Uvigerinidae | |
| ......Uvigerina | |
| .......Uvigerina peregrina | |
| RT | microfossils |
| SN | Species. Indexed with microfossils if applicable. |
| Uvigerinidae | |
|---|---|
| BT | Invertebrata |
| .Protista | |
| ..Foraminifera | |
| ...Rotaliina | |
| ....Buliminacea | |
| .....Uvigerinidae | |
| NT | Uvigerina |
| RT | microfossils |
| SN | Family. Indexed with microfossils if applicable. |
| Uzbekistan | |
|---|---|
| BT | Asia |
| .Uzbekistan | |
| BT | Commonwealth of Independent States |
| .Uzbekistan | |
| NT | Almalyk Uzbekistan |
| Bukantau | |
| Bukhara Uzbekistan | |
| Bukhara-Khiva | |
| Chadak Uzbekistan | |
| Karshi Steppe | |
| Karshi Uzbekistan | |
| Khiva Uzbekistan | |
| Kul'dzhuktau | |
| Mubarek Uzbekistan | |
| Nura-Tau | |
| Oktyabr Uzbekistan | |
| Samarkand Uzbekistan | |
| Sokh Uzbekistan | |
| Tamdytau | |
| Tashkent Uzbekistan | |
| Ziaetdin Uzbekistan | |
| RT | Amu Darya |
| Amu Darya Basin | |
| Pamirs | |
| Surkhan Darya | |
| Aral region | |
| Central Asia | |
| Barsakelmes | |
| Chirchik River | |
| Dengizkul | |
| Fergana Basin | |
| Gazli earthquake 1976 | |
| Gazli earthquake 1984 | |
| Hissar Range | |
| Karamazar | |
| Kyzylkum | |
| Kurama Range | |
| Syr Darya | |
| Surkhan Darya basin | |
| Turan | |
| Turania | |
| SN | Republic. Formerly the Uzbek Soviet Socialist Republic. In Soviet Central Asia. This term has multiple hierarchies. |
| Uzen Field | |
|---|---|
| BT | Commonwealth of Independent States |
| .Kazakhstan | |
| ..Uzen Field | |
| RT | oil and gas fields |
| giant fields | |
| Mangyshlak Peninsula | |
| SN | Giant oilfield in S Mangyshlak area, SE Kazakhstan. This term has multiple hierarchies. |
| Uzon | |
|---|---|
| UF | Ozun |
| RT | volcanoes |
| Kamchatka Russian Federation | |
| Kamchatka Peninsula | |
| SN | Volcano. SE Kamchatka Peninsula. Before 1993, may also have been used for towns. Indexed with regions as applicable. |