Ru  search
USEruthenium
Ru-106  search
BTisotopes
 .radioactive isotopes
 ..Ru-106
BTmetals
 .platinum group
 ..ruthenium
 ...Ru-106
SNThis term has multiple hierarchies.
Ruanda  search
USERwanda
Ruapehu  search
BTAustralasia
 .New Zealand
 ..Ruapehu
UFRuapehu Volcano
RTvolcanoes
 North Island
 Crater Lake
SNVolcano in Tongariro National Park in S central North Island. Also index North Island.
Ruapehu Volcano  search
USERuapehu
rubblerock  search
USEbreccia
rubidium  search
BTmetals
 .alkali metals
 ..rubidium
NTRb-87/Sr-86
UFRb
RTisotopes
 lithophile elements
 K/Rb
 Rb/Sr
rubidium-strontium  search
USERb/Sr
rubies  search
RTcorundum
 gems
 sapphire
SNBefore 1982, also search ruby. Before 1993, included use when of economic value as well as for mineralogical studies. As of 1993, use corundum for the mineral. Indexed with with gems for the commodity. See List C.
Ruby Mountains  search
RTElko County Nevada
 Nevada
 Ruby Range
 White Pine County Nevada
SNRange in Elko and White Pine counties in NE Nevada. Also search Ruby Range AND Nevada. Indexed with counties or region and mountain ranges as applicable.
Ruby Range  search
RTMadison County Montana
 Ruby Mountains
 Montana
 Yukon Territory
SNN extension of Snowcrest Mountains in SW Montana, lies just W of Ruby River. Also in other locations. For the location in NE Nevada, see Ruby Mountains (Note added 1995). Indexed with counties or region and mountain ranges as applicable.
Ruda Poland  search
BTEurope
 .Central Europe
 ..Poland
 ...Katowice Poland
 ....Ruda Poland
SNTown in coal mining region in N central Katowice, S Poland.
Rudistae  search
BTInvertebrata
 .Mollusca
 ..Bivalvia
 ...Rudistae
Rudki Ukraine  search
BTEurope
 .Ukraine
 ..Rudki Ukraine
RTLvov Ukraine
SNTown in Lvov Oblast in E Ukraine. This term has multiple hierarchies. Indexed with oblast as applicable.
Rudnichny Russian Federation  search
BTCommonwealth of Independent States
 .Russian Federation
 ..Chelyabinsk Russian Federation
 ...Rudnichny Russian Federation
SNTown in W Chelyabinsk Oblast in Southern Urals of W Siberia. Before 1993, Rudichny Russian Republic was also used.
Rudny Altai  search
BTAsia
 .Rudny Altai
BTCommonwealth of Independent States
 .Rudny Altai
UFRudnyy Altai
 Rudnyy Altay
RTRussian Federation
 Kazakhstan
 Altai Mountains
 Altai Russian Federation
 Eastern Kazakhstan
SNRegion in the Altai Mountains in Vostochno Kazakhstan Oblast and in Altai Kray. This term has multiple hierarchies. Indexed with former Soviet republics as applicable.
Rudnyy Altai  search
USERudny Altai
Rudnyy Altay  search
USERudny Altai
Rudolf (Lake)  search
USELake Turkana
rudstone  search
BTsedimentary rocks
 .carbonate rocks
 ..rudstone
RTboundstone
 floatstone
 grainstone
SNAdded to Thesaurus in 1995.
Ruegen (Island)  search
USERugen Island
Rugen Island  search
BTEurope
 .Central Europe
 ..Germany
 ...Mecklenburg-Western Pomerania Germany
 ....Rugen Island
UFRuegen (Island)
SNIn the Baltic Sea just off Mecklenburg-Western Pomerania, Germany. Largest island of Germany. Also search Rugen.
Rugosa  search
BTInvertebrata
 .Coelenterata
 ..Anthozoa
 ...Zoantharia
 ....Rugosa
UFTetracorallia
RTScleractinia
 Tabulata
SNOrder.
Ruhla Germany  search
BTEurope
 .Central Europe
 ..Germany
 ...Thuringia Germany
 ....Ruhla Germany
RTThuringian Forest
SNTown in Thuringian Forest in Thuringia, central Germany.
Ruhr  search
BTEurope
 .Central Europe
 ..Germany
 ...North Rhine-Westphalia Germany
 ....Ruhr
UFRuhr Basin
 Ruhr Valley
SNMajor coal-mining and industrial region. Includes the Ruhr River valley and the Dusseldorf area to the S along the Rhine River.
Ruhr Basin  search
USERuhr
Ruhr Valley  search
USERuhr
Rum  search
USERhum
Rumania  search
USERomania
Rumilly France  search
BTute-Savoie France
 .Rumilly France
UFRumilly-Albanais France
SNTown in E France.
Rumilly-Albanais France  search
USERumilly France
Ruminantia  search
BTChordata
 .Vertebrata
 ..Tetrapoda
 ...Mammalia
 ....Theria
 .....Eutheria
 ......Artiodactyla
 .......Ruminantia
NTBovidae
 Cervidae
 Giraffidae
 Tylopoda
RThorns
SNSuborder.
Rundle Group  search
RTAlberta
 Australia
 British Columbia
 Eocene
 Lower Mississippian
 Mississippian
 Queensland Australia
 Montana
 Upper Mississippian
 Yukon Territory
SNLower Mississippian and Upper Mississippian. Alberta, British Columbia, Yukon Territory and Montana. Rundle Formation and Rundle oil shale have also been used for Eocene oil shale deposit in Queensland. Indexed with ages as applicable. Added to Thesaurus
Runnels County Texas  search
BTUnited States
 .Texas
 ..Runnels County Texas
SNW central Texas.
runoff  search
RTCREAMS
 discharge
 DRAINMOD
 hydrology
 precipitation
 retention
 rivers
 rivers and streams
 sediment yield
 storms
 stormwater
 streamflow
 streams
 surface water
 Universal Soil Loss Equation
 water balance
 water yield
 watersheds
SNBefore 1993, also search overland flow if applicable.
runout  search
USEwater yield
Rupelian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Oligocene
 .....Rupelian
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Oligocene
 .....lower Oligocene
 ......Rupelian
RTKrosno Beds
 Stampian
SNEurope. Above Tongrian, below Chattian.
rupture  search
RTdeformation
 failures
 fatigue
 faults
 fractures
 rock mechanics
 stress
 tensile strength
SNAdded to Thesaurus in 1982.
rural environment  search
RTecology
 environmental geology
 human ecology
 land use
 pollution
 urbanization
SNAdded to Thesaurus in 1995.
Rurki India  search
USERoorkee India
Rus  search
Rusca Montana Romania  search
BTEurope
 .Southern Europe
 ..Romania
 ...Rusca Montana Romania
BTEurope
 .Southern Europe
 ..Banat
 ...Rusca Montana Romania
UFRusca-Montana Romania
SNVillage in the Poiana-Rusca Mountains in Caras-Severin County in E Romania. This term has multiple hierarchies.
Rusca-Montana Romania  search
USERusca Montana Romania
Ruse Bulgaria  search
BTEurope
 .Southern Europe
 ..Bulgaria
 ...Ruse Bulgaria
SNProvince and city in N Bulgaria.
Rush County Indiana  search
BTIndiana
 .Rush County Indiana
SNE central Indiana.
Rush County Kansas  search
BTUnited States
 .Kansas
 ..Rush County Kansas
SNCentral Kansas.
Rusk County Texas  search
BTUnited States
 .Texas
 ..Rusk County Texas
SNE Texas.
Rusk County Wisconsin  search
BTUnited States
 .Wisconsin
 ..Rusk County Wisconsin
SNN Wisconsin.
Rusophycus  search
BTichnofossils
 .Rusophycus
RTTrilobita
Russell Cave  search
RTJackson County Alabama
SNNE Alabama. Indexed with county or region as applicable. Added to Thesaurus in 1981.
Russell County Alabama  search
BTUnited States
 .Alabama
 ..Russell County Alabama
SNE Alabama.
Russell County Kansas  search
BTUnited States
 .Kansas
 ..Russell County Kansas
SNCentral Kansas.
Russell County Kentucky  search
BTUnited States
 .Kentucky
 ..Russell County Kentucky
SNS Kentucky.
Russell County Ontario  search
BTCanada
 .Eastern Canada
 ..Ontario
 ...Russell County Ontario
Russell County Virginia  search
BTUnited States
 .Virginia
 ..Russell County Virginia
SNSW Virginia.
Russia  search
USERussian Federation
SNBefore 1971, included use in subfiles E, N and B for the USSR.
Russian  search
RTcatalogs
 dictionaries
 glossaries
 lexicons
SNUsed for studies about the language.
Russian Arctic  search
BTCommonwealth of Independent States
 .Russian Federation
 ..Russian Arctic
BTArctic region
 .Russian Arctic
NTNew Siberian Islands
UFSoviet Arctic
RTAsia
 Europe
 Taymyr Dolgan-Nenets Russian Federation
SNThat area N of the Arctic Circle in European Russian Federation and Siberia, and including Russian islands in the Arctic Ocean. In Siberia, arctic climatic conditions prevail far S of the Arctic Circle because of its great continental expanse. Before 1978
Russian Basin  search
USERussian Plain
Russian Far East  search
BTCommonwealth of Independent States
 .Russian Federation
 ..Russian Far East
BTAsia
 .Russian Far East
UFSiberia-Soviet Far East
 Soviet Far East
RTAmur Basin
 Baikal-Amur Railroad region
 Khabarovsk Russian Federation
 Argun River
 Amur Russian Federation
 Kamchatka Peninsula
 Primorye Russian Federation
 Far East
 Okhotsk-Chukchi
 Dzhagdy Range
 Kuril Islands
 Karymskaya Sopka
 Komsomolsk Russian Federation
 Sa
SNRegion occupying easternmost Siberia including Amur Oblast, Khabarovsk Kray, Primorye Kray, and Sakhalin Oblast. Before 1978, also search USSR AND Far East. This term has multiple hierarchies. Added to Thesaurus in 1993.
Russian Federation  search
BTCommonwealth of Independent States
 .Russian Federation
NTAbakan Russian Federation
 Allarechenskiy
 Altai Russian Federation
 Amur region
 Amur Russian Federation
 Anadyr Basin
 Anadyr Range
 Angara River
 Arkhangelsk Russian Federation
 Astrakhan Russian Federation
 Baikal Mountains
 Baikal region
 Baikal rift zone
 Baikal-Amur Railroad region
 Bashkortostan Russian Federation
 Belaya Gora Russian Federation
 Belgorod Russian Federation
 Bryansk Russian Federation
 Buryat Russian Federation
 Caucasus Foreland
 Central Urals
 Chadobets Uplift
 Chaya Massif
 Chechen-Ingush Russian Federation
 Chelyabinsk Russian Federation
 Chita Russian Federation
 Chukchi Peninsula
 Chuya Alps
 Dagestan Russian Federation
 Dzhagdy Range
 Dzhida River
 Dzhugdzhur region
 Imandra
 Irkutsk Basin
 Irkutsk Russian Federation
 Iya River
 Kabardin-Balkar Russian Federation
 Kaliningrad Russian Federation
 Kalmyk Russian Federation
 Kama River
 Kamchatka Russian Federation
 Kamenka River
 Kansk-Achinsk Basin
 Karelia Russian Federation
 Karymskaya Sopka
 Kemerovo Russian Federation
 Khabarovsk Russian Federation
 Khamar-Daban Range
 Khatanga Basin
 Khibiny Mountains
 Kiya River
 Kodar Range
 Kola Peninsula
 Kolyma River
 Kolyma River basin
 Kolyma Uplift
 Komi Russian Federation
 Kommunar Russian Federation
 Komsomolsk Russian Federation
 Kostroma Russian Federation
 Krasnodar Russian Federation
 Krasnoyarsk Russian Federation
 Kuban
 Kuma Basin
 Kurgan Russian Federation
 Kursk magnetic anomaly
 Kursk Russian Federation
 Kuznetsk Alatau
 Kuznetsk Basin
 Lake Baikal
 Lake Ladoga
 Lake Onega
 Lena Basin
 Lena River
 Leningrad Oblast Russian Federation
 Lower Tunguska River
 Magadan Russian Federation
 Malgobek Russian Federation
 Mama River
 Mariinsk Russian Federation
 Maya River basin
 Maymecha-Kotuy
 Megion Field
 Mezen River basin
 Minusinsk Basin
 Mirnyy Russian Federation
 Moneron Island
 Moscow Basin
 Moscow Russian Federation
 Moscow Syneclise
 Moskva River
 Murmansk Russian Federation
 Nayba River basin
 Nizhniy Novgorod Russian Federation
 North Ossetia Russian Federation
 Northern Caucasus
 Northern Dvina River
 Northern Urals
 Novgorod Russian Federation
 Novosibirsk Russian Federation
 Ob River
 Oka River
 Okhotsk region
 Okhotsk-Chukchi
 Okhotsk-Chukchi volcanic belt
 Olekma River
 Olekma-Vitim Highlands
 Omolon Block
 Omolon River
 Omsk Russian Federation
 Orenburg Russian Federation
 Orlov Russian Federation
 Ozernoye Russian Federation
 Pachelma Russian Federation
 Patom Plateau
 Pechora Basin
 Pechora River
 Penzhina Bay
 Perm Russian Federation
 Polar Urals
 Popigay Structure
 Primorye Russian Federation
 Pskov Russian Federation
 Rostov Russian Federation
 Russian Arctic
 Russian Far East
 Russian Fennoscandia
 Russian Pacific region
 Ryazan Russian Federation
 Sadon Russian Federation
 Sakhalin Russian Federation
 Sakmara Zone
 Salair Ridge
 Samara Russian Federation
 Saratov Russian Federation
 Sette-Daban Range
 Severnaya Zemlya
 Siberian Platform
 Sikhote-Alin Range
 Smolensk Russian Federation
 Stanovoy Range
 Stavropol Russian Federation
 Stony Tunguska River
 Suchan Basin
 Sverdlovsk Russian Federation
 Tagil Basin
 Tambov Russian Federation
 Tatar Arch
 Tatar Russian Federation
 Tatar Strait
 Tataria
 Timan Ridge
 Timan-Pechora region
 Tomsk Russian Federation
 Transbaikalia
 Tula Russian Federation
 Tunguska Basin
 Tunguska River
 Tunguska Syneclise
 Turukhan River
 Tuva Russian Federation
 Tver Russian Federation
 Tyrny-Auz Russian Federation
 Tyumen Russian Federation
 Uchur River basin
 Uda River
 Udmurtia Russian Federation
 Udokan Mountains
 Ulyanovsk Russian Federation
 Ural region
 Ural-Tau
 Uralian Foreland
 Valdai
 Verkhoyansk region
 Vilyuy River
 Vilyuy River basin
 Vitim River
 Vladimir Russian Federation
 Vodino Russian Federation
 Volga region
 Volga River
 Volga-Don region
 Volga-Urals
 Volgograd Russian Federation
 Vologda Russian Federation
 Voronezh Russian Federation
 Vyatka River
 Vyatka Russian Federation
 Vyatka-Kama Interfluve
 Vychegda River
 Western Transbaikalia
 Wrangel Island
 Yakutia Russian Federation
 Yaroslavl Russian Federation
 Yenisei River
 Yudoma River
 Yuryuzan Russian Federation
 Zeya River
UFRussia
 Russian Republic
RTAsia
 Arctic Coastal Plain
 Arctic Ocean
 Altai-Sayan region
 Amur Basin
 Amur River
 Argun River
 Baltic Glaciation
 Baltic region
 Astrakhan Arch
 Azov region
 Baikalian Phase
 Baltic Plain
 Baltica
 Baltic Shield
 Barabash Suite
 Baskunchak Series
 Bazhenov Formation
 c
SNFormerly the Russian Soviet Federated Socialist Republic (RSFSR) or Russian Republic in Europe and Asia. Before 1993, Russian Republic was also used. Indexed with Asia and/or Europe as applicable. Added to Thesaurus in 1993.
Russian Fennoscandia  search
BTCommonwealth of Independent States
 .Russian Federation
 ..Russian Fennoscandia
BTRussian Platform
 .Russian Fennoscandia
BTEurope
 .Fennoscandia
 ..Russian Fennoscandia
UFSoviet Fennoscandia
SNRegion of Russian Federation in Fennoscandia. This term has multiple hierarchies. Added to Thesaurus in 1993.
Russian Pacific region  search
BTCommonwealth of Independent States
 .Russian Federation
 ..Russian Pacific region
BTAsia
 .Russian Pacific region
NTKamchatka Peninsula
 Koryak Range
 Kuril Islands
UFSoviet Pacific region
RTSiberia
 Pacific Coast
 Pacific region
 Sakhalin Russian Federation
SNIncludes Kamchatka Peninsula, Kuril Islands and Sakhalin. This term has multiple hierarchies. Added to Thesaurus in 1993.
Russian Plain  search
BTEurope
 .Russian Plain
UFEast European Plain
 Russian Basin
RTRussian Federation
 Ukraine
 Moldavia
 Estonia
 Latvia
 Lithuania
 Russian Platform
 Belarus
 Moldova
SNComprises most of the former European USSR W of the Urals and is bordered on the S by the Carpathians, the Crimean Mountains and the Caucasus. Indexed with former Soviet republics as applicable.
Russian Platform  search
NTBaltic Plain
 Dnieper-Donets Basin
 Franz Josef Land
 Moscow-Pechora Syneclise
 Russian Fennoscandia
 Timan Ridge
 Ukrainian Shield
 Ukrainian Syneclise
 Voronezh-Volga Anteclise
UFEast European Platform
RTRussian Federation
 Crimea Ukraine
 Ukraine
 Moldavia
 Latvia
 Laurussia
 Russian Plain
 Transcarpathia Ukraine
 Ukrainian Carpathians
 Tsarev Meteorite
SNAncient platform of Precambrian crystalline rocks overlain by sedimentary deposits of the Russian or East European Plain. Before 1993, USSR was a broader term. Indexed with Europe or Asia and former Soviet republics as applicable.
Russian Republic  search
USERussian Federation
SNAs of 1993, no longer a valid term for GeoRef.
Rustler Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Permian
 ....Rustler Formation
RTNew Mexico
 Texas
 Culebra Dolomite Member
SNW Texas and SE New Mexico. Added to Thesaurus in 1985.
ruthenium  search
BTmetals
 .platinum group
 ..ruthenium
NTRu-106
UFRu
RTruthenium ores
SNChemical element. As of 1985, use ruthenium ores for ruthenium as a commodity.
ruthenium ores  search
BTmetal ores
 .ruthenium ores
RTplatinum ores
 ruthenium
SNBefore 1985, also search (ruthenium OR Ru) AND (deposit OR deposits OR ore OR ores OR economic) in the basic index. Commodity. See List C.
Rutherford County North Carolina  search
BTUnited States
 .North Carolina
 ..Rutherford County North Carolina
Rutherford County Tennessee  search
BTUnited States
 .Tennessee
 ..Rutherford County Tennessee
rutile  search
BToxides
 .rutile
RTheavy minerals
 anatase
 brookite
 titanium oxides
 rutile structure
rutile structure  search
RTrutile
Rutland County Vermont  search
BTUnited States
 .Vermont
 ..Rutland County Vermont
NTBrandon Vermont
 Castleton Vermont
 Rutland Vermont
SNSW Vermont. Before 1974, Rutland County was also a county in England that is presently a part of Leicestershire.
Rutland Vermont  search
BTUnited States
 .Vermont
 ..Rutland County Vermont
 ...Rutland Vermont
SNCity in W central Vermont.