ro  search
road log  search
UFlog, road
RTmaps
 guidebook
 field trips
road materials  search
SNNot a valid GeoRef index term after 1970. See construction materials; gravel deposits; aggregate; asphalt; cement materials.
Road River Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Road River Formation
RTOrdovician
 Silurian
 Lower Devonian
 Alaska
 British Columbia
 Yukon Territory
 Upper Cambrian
 Northwest Territories
SNIndexed with ages as applicable. Added to Thesaurus in 1989.
road tests  search
RTengineering geology
 highways
 testing
SNAdded to Thesaurus in 1981.
Roadian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Permian
 ....Guadalupian
 .....Roadian
Roadless Area Review & Evaluation, Phase II  search
USERARE II regions
roads  search
SNNot a valid term for GeoRef. See highways.
Roan Supergroup  search
BTChronostratigraphic Units
 .Precambrian
 ..Roan Supergroup
RTSouth Carolina
 North Carolina
 Georgia
 Tennessee
SNInterlayered with Carolina Gneiss in Spruce Pine District. N Georgia, W North Carolina, NW South Carolina, and E Tennessee.
Roane County Tennessee  search
BTUnited States
 .Tennessee
 ..Roane County Tennessee
RTOak Ridge National Laboratory
SNE Tennessee.
Roane County West Virginia  search
BTUnited States
 .West Virginia
 ..Roane County West Virginia
RTGranny Creek Field
SNW West Virginia.
Roanoke County Virginia  search
BTUnited States
 .Virginia
 ..Roanoke County Virginia
RTRoanoke Virginia
SNSW Virginia. Also search Roanoke Virginia and/or Salem Virginia if applicable.
Roanoke Virginia  search
BTUnited States
 .Virginia
 ..Roanoke Virginia
RTRoanoke County Virginia
SNCity on Roanoke River in but independent of Roanoke County, SW Virginia. Indexed with Roanoke County Virginia for adjacent areas if applicable.
Roaring Brook Valley  search
RTHartford County Connecticut
 New York
 Tolland County Connecticut
SNValley in Hartford County and another in Tolland County, Connecticut. Also occurs in the Adirondacks of NE New York and in other locations. Indexed with counties as applicable.
robbery  search
USEstream capture
Robertinacea  search
BTInvertebrata
 .Protista
 ..Foraminifera
 ...Rotaliina
 ....Robertinacea
RTmicrofossils
SNSuperfamily. Indexed with microfossils if applicable.
Roberts County South Dakota  search
BTUnited States
 .South Dakota
 ..Roberts County South Dakota
Roberts County Texas  search
BTUnited States
 .Texas
 ..Roberts County Texas
Roberts Mountain Allochthon  search
USERoberts Mountains Allochthon
Roberts Mountains  search
RTEureka County Nevada
SNEureka County in central Nevada. Indexed with county or region as applicable.
Roberts Mountains Allochthon  search
BTUnited States
 .Nevada
 ..Roberts Mountains Allochthon
UFRoberts Mountain Allochthon
RTElko County Nevada
 Eureka County Nevada
SNCentral Nevada. Indexed with county or counties as applicable. Added to Thesaurus in 1989.
Roberts Mountains Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Silurian
 ....Middle Silurian
 .....Roberts Mountains Formation
RTUtah
 Nevada
SNUnderlies Rabbit Hill Formation. E Nevada, and W Utah.
Robertson Bay Group  search
RTAntarctica
 Cambrian
 Neoproterozoic
 Ordovician
 Victoria Land
SNN Victoria Land. Neoproterozoic to Ordovician. Indexed with ages as applicable. Added to Thesaurus in 1989.
Robertson County Kentucky  search
BTUnited States
 .Kentucky
 ..Robertson County Kentucky
Robertson County Tennessee  search
BTUnited States
 .Tennessee
 ..Robertson County Tennessee
Robertson County Texas  search
BTUnited States
 .Texas
 ..Robertson County Texas
Robeson County North Carolina  search
BTUnited States
 .North Carolina
 ..Robeson County North Carolina
Robles Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Robles Formation
RTWest Indies
 Puerto Rico
Roca Formation  search
RTArgentina
 Council Grove Group
 Danian
 K-T boundary
 Kansas
 Maestrichtian
 Nebraska
 Oklahoma
 Wolfcampian
SNK-T age (Maestrichtian-Danian) or Paleocene of Argentina. Also a Wolfcampian member of the Council Grove Group in NE Kansas, SE Nebraska, and N Oklahoma. Indexed with age or ages as applicable.
Roccamonfina  search
BTEurope
 .Southern Europe
 ..Italy
 ...Campania Italy
 ....Roccamonfina
RTvolcanoes
SNVolcano in NW Campania, S Italy.
Rochechouart France  search
BTute-Vienne France
 .Rochechouart France
RTimpact features
SNTown in Haute-Vienne, W central France.
Rochester Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Silurian
 ....Middle Silurian
 .....Rochester Formation
RTOntario
 Pennsylvania
 New York
 Maryland
 West Virginia
 Clinton Group
 Keefer Sandstone
SNIncludes Keefer Sandstone Member, Decew Waterlime Bed.
Rochester New York  search
BTUnited States
 .New York
 ..Monroe County New York
 ...Rochester New York
SNCity on S Lake Ontario in W New York.
rock bursts  search
UFbursts, rock
 rockbursts
RTmining geology
 geologic hazards
rock carvings  search
USEpetroglyphs
Rock County Minnesota  search
BTUnited States
 .Minnesota
 ..Rock County Minnesota
Rock County Nebraska  search
BTUnited States
 .Nebraska
 ..Rock County Nebraska
Rock County Wisconsin  search
BTUnited States
 .Wisconsin
 ..Rock County Wisconsin
Rock Creek Park  search
BTUnited States
 .Rock Creek Park
RTDistrict of Columbia
 Montgomery County Maryland
SNAlso search Rock Creek. Indexed with county and/or region as applicable.
rock creep  search
USEcreep
rock crystal  search
USEquartz crystal
rock descriptions  search
SNNot a valid GeoRef index term after 1970. See igneous rocks; metamorphic rocks; sedimentary rocks.
Rock Eval  search
USERock-Eval
rock failure  search
USEfailures
rock glaciers  search
BTglaciers
 .rock glaciers
RTglacial geology
 permafrost
 gravity flows
 boulders
 frost action
 ice
Rock Island County Illinois  search
BTUnited States
 .Illinois
 ..Rock Island County Illinois
NTRock Island Illinois
SNNW Illinois.
Rock Island Illinois  search
BTUnited States
 .Illinois
 ..Rock Island County Illinois
 ...Rock Island Illinois
SNCity on Mississippi River in NW Illinois.
Rock Lake Shale Member  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Pennsylvanian
 .....Upper Pennsylvanian
 ......Missourian
 .......Rock Lake Shale Member
RTMissouri
 Nebraska
 Kansas
 Stanton Formation
SNOf Stanton Limestone. E Kansas, NW Missouri, and SE Nebraska.
rock masses  search
RTrock mechanics
SNUsed in engineering to characterize material which includes a volume of earth (rock, soil, water, and air-filled voids) and its discontinuities.
rock mecha  search
rock mechanics  search
RTacoustical emissions
 asperities
 Atterberg limits
 biaxial tests
 boundary conditions
 brittle materials
 brittleness
 case studies
 cohesive materials
 competent materials
 compressive strength
 congelifraction
 constitutive equations
 cracks
 cryoturbation
 dams
 defo
SNUsed for geotechnical studies.
rock pressure  search
USElithostatic pressure
rock salt  search
USEhalite
rock slides  search
USErockslides
rock slip  search
USErockslides
Rock Springs Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Upper Cretaceous
 .....Rock Springs Formation
RTUtah
 Wyoming
 Mesaverde Group
 Hilliard Shale
SNIn Mesaverde Group. Includes McCourt Tongue and Glades coal bed. NE Utah and SW Wyoming. Added to Thesaurus in 1989.
Rock Springs Uplift  search
BTUnited States
 .Wyoming
 ..Rock Springs Uplift
RTRocky Mountains
 Sweetwater County Wyoming
 Rock Springs Wyoming
SNSW Wyoming. Added to Thesaurus in 1985.
Rock Springs Wyoming  search
BTUnited States
 .Wyoming
 ..Sweetwater County Wyoming
 ...Rock Springs Wyoming
RTRock Springs Uplift
SNCity in SW Wyoming.
rock varn  search
rock varnish  search
UFdesert varnish
RTexposure age
 iron oxides
 weathering
 arid environment
 deserts
 manganese oxides
 weathering crust
 cation-ratio dating
 chemical weathering
SNAdded to Thesaurus in 1995.
Rock-Eval  search
UFRock Eval
RTchemical analysis
 instruments
 hydrocarbons
 petroleum
 kerogen
 pyrolysis
SNPyrolysis. Standard screening method in petroleum geochemistry. As of 1993, for discussion of instruments and analysis. Added to Thesaurus in 1993.
rock-stratigraphy  search
USElithostratigraphy
rock-water interaction  search
USEwater-rock interaction
rock-water interface  search
USEwater-rock interaction
Rockall Bank  search
BTAtlantic Ocean
 .North Atlantic
 ..Rockall Bank
RTDSDP Site 117
 ODP Site 980
 ODP Site 981
 ODP Site 982
SNAbout 225 miles W of the Hebrides.
Rockall Plateau  search
BTAtlantic Ocean
 .North Atlantic
 ..Rockall Plateau
UFRockall Rise
RTLeg 48
 Leg 12
 DSDP Site 116
 DSDP Site 117
 DSDP Site 403
 DSDP Site 404
 DSDP Site 405
 DSDP Site 406
 DSDP Site 552
 Leg 81
 DSDP Site 553
 DSDP Site 554
 DSDP Site 555
SNRise or submarine plateau just N of Rockall Bank W of the Hebrides.
Rockall Rise  search
USERockall Plateau
Rockall Trench  search
USERockall Trough
Rockall Trough  search
BTAtlantic Ocean
 .North Atlantic
 ..Rockall Trough
UFRockall Trench
RTDSDP Site 610
SNSE of Rockall Bank W of the Hebrides.
Rockbridge County Virginia  search
BTUnited States
 .Virginia
 ..Rockbridge County Virginia
SNW Virginia. Also search Buena Vista Virginia and/or Lexington Virginia if applicable.
rockbridgeite  search
BTphosphates
 .rockbridgeite
rockbursts  search
USErock bursts
Rockcastle County Kentucky  search
BTUnited States
 .Kentucky
 ..Rockcastle County Kentucky
Rockdale County Georgia  search
BTUnited States
 .Georgia
 ..Rockdale County Georgia
rockfalls  search
BTmass movements
 .rockfalls
RTslope stability
 geomorphology
rockfill dams  search
BTdams
 .rockfill dams
SNAdded to Thesaurus in 1982.
Rockhampton Australia  search
BTAustralasia
 .Australia
 ..Queensland Australia
 ...Rockhampton Australia
SNCity in E Queensland.
Rockingham County New Hampshire  search
BTw Hampshire
 .Rockingham County New Hampshire
RTGreat Bay
SNSE New Hampshire.
Rockingham County North Carolina  search
BTUnited States
 .North Carolina
 ..Rockingham County North Carolina
SNN North Carolina.
Rockingham County Virginia  search
BTUnited States
 .Virginia
 ..Rockingham County Virginia
SNNW Virginia. Also search Harrisonburg Virginia if applicable.
Rockland County New York  search
BTUnited States
 .New York
 ..Rockland County New York
SNSE New York.
Rocknest Formation  search
RTAustralia
 Northwest Territories
 Paleoproterozoic
 Western Australia
SNPaleoproterozoic of Northwest Territories. May also occur in Western Australia. Indexed with age as applicable. Added to Thesaurus in 1989.
rocks  search
RTaggregate
 bedrock
 cap rocks
 carbonate rocks
 chemically precipitated rocks
 country rocks
 crystalline rocks
 extrusive rocks
 fluid inclusions
 host rocks
 hypabyssal rocks
 inclusions
 metaigneous rocks
 metamorphic rocks
 metaplutonic rocks
 metasedimentary rocks
rocks and ores  search
SNUsed in subfile G. See metal ores; rocks; igneous rocks; metamorphic rocks; sedimentary rocks; crystalline rocks; mineral resources.
rockslides  search
BTmass movements
 .rockslides
UFrock slides
 rock slip
RTgeomorphology
 landslides
Rockwall County Texas  search
BTUnited States
 .Texas
 ..Rockwall County Texas
Rockwood Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Silurian
 ....Rockwood Formation
RTGeorgia
 Tennessee
SNLower and Middle Silurian. Underlies Hancock Limestone; overlies Sequatchie Formation. E Tennessee and NW Georgia.
Rocky Flats Plant  search
BTUnited States
 .Colorado
 ..Rocky Flats Plant
RTBoulder County Colorado
 nuclear facilities
 Jefferson County Colorado
 Superfund
SNEnvironmental technology site. Formerly a plutonium processing site. Chiefly in Jefferson County, between Boulder and Golden, north-central Colorado. Indexed with Jefferson County Colorado and/or Boulder County Colorado as applicable. Added to Thesaurus i
Rocky Mountain Arsenal  search
BTUnited States
 .Colorado
 ..Adams County Colorado
 ...Rocky Mountain Arsenal
SNNE central Colorado. Added to Thesaurus in 1985.
Rocky Mountain foreland  search
USERocky Mountains foreland
Rocky Mountain National Park  search
BTUnited States
 .Colorado
 ..Rocky Mountain National Park
RTnational parks
 Grand County Colorado
 Boulder County Colorado
 Front Range
 Larimer County Colorado
SNN Colorado, in Boulder, Grand and Larimer counties. Indexed with counties as applicable. Added to Thesaurus in 1989.
Rocky Mountain Trench  search
BTNorth America
 .Rocky Mountain Trench
RTMontana
 British Columbia
 Yukon Territory
 Rocky Mountains
 Northern Rocky Mountains
SNA trough in the Northern Rockies, E of the interior plateau of British Columbia, between a series of parallel ranges extending WNW from Montana to the headwaters of the Yukon River. Indexed with British Columbia, Washington, and/or Yukon Territory as appl
Rocky Mountains  search
BTNorth America
 .Rocky Mountains
NTCanadian Rocky Mountains
 Central Rocky Mountains
 Northern Rocky Mountains
 Selkirk Mountains
 Southern Rocky Mountains
 U. S. Rocky Mountains
RTCanada
 Alaska
 North American Cordillera
 Canadian Cordillera
 Disturbed Belt
 Cariboo Mountains
 Colorado Lineament
 Laramide Orogeny
 Franklin Mountains
 Madison Range
 Mackenzie Mountains
 Rocky Mountain Trench
 Rock Springs Uplift
 Rocky Mountains foreland
 Semino
SNMountain system in W North America extending from N Alaska to the Mexican frontier. Indexed with Alaska, and countries as applicable.
Rocky Mountains foreland  search
BTNorth America
 .Rocky Mountains foreland
UFRocky Mountain foreland
RTRocky Mountains
SNAdded to Thesaurus in 1981.
Rocroi France  search
BTEurope
 .Western Europe
 ..France
 ...Ardennes France
 ....Rocroi France
UFRocroy France
RTArdennes
SNTown in N France.
Rocroy France  search
USERocroi France
Rodentia  search
BTChordata
 .Vertebrata
 ..Tetrapoda
 ...Mammalia
 ....Theria
 .....Eutheria
 ......Rodentia
NTCastoridae
 Caviomorpha
 Hystricomorpha
 Myomorpha
 Sciuromorpha
SNOrder.
Rodessa Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Lower Cretaceous
 .....Rodessa Formation
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Comanchean
 .....Rodessa Formation
RTLouisiana
 Mississippi
 Texas
 Trinity Group
 Arkansas
SNIn Trinity Group. This term has multiple hierarchies. Added to Thesaurus in 1989.
Rodez Pass  search
USERodez Trough
Rodez Trough  search
BTEurope
 .Western Europe
 ..France
 ...Rodez Trough
UFRodez Pass
RTAveyron France
 Haute-Garonne France
 Tarn France
SNBetween Segala Plateau in S and Causse du Comtal in N. Also search Rodez. Indexed with departments as applicable.
rodingite  search
BTigneous rocks
 .plutonic rocks
 ..gabbros
 ...rodingite
Rodinia  search
BTChronostratigraphic Units
 .Precambrian
 ..Proterozoic
 ...Neoproterozoic
 ....Rodinia
RTplate tectonics
 supercontinents
SNSupercontinent assembled during the Grenvillian Orogeny. Indexed with countries and continents as applicable.
Rodna Mountains  search
BTEurope
 .Southern Europe
 ..Romania
 ...Transylvania
 ....Rodna Mountains
UFRodnei Mountains
RTCarpathians
 Transylvanian Alps
SNRange of the Carpathians along border between Maramures and Cluj Counties in N Transylvania.
Rodna Romania  search
BTEurope
 .Southern Europe
 ..Romania
 ...Transylvania
 ....Rodna Romania
SNVillage in NE Cluj County in NE Transylvania.
Rodnei Mountains  search
USERodna Mountains
Rodrigues Island  search
USERodriguez Island
Rodrigues triple junction  search
USERodriguez triple junction
Rodriguez Island  search
BTIndian Ocean Islands
 .Mascarene Islands
 ..Rodriguez Island
UFRodrigues Island
SNA dependency of Mauritius in the Mascarene Islands about 500 miles E of Madagascar.
Rodriguez triple junction  search
BTIndian Ocean
 .Rodriguez triple junction
UFRodrigues triple junction
RTSouthwest Indian Ridge
 Southeast Indian Ridge
 Central Indian Ridge
 triple junctions
SNSpreading center near 70#DGE 25#DG30'S in the south-central Indian Ocean. Junction of the Central Indian Ridge, Southeast Indian Ridge, and Southwest Indian Ridge. Indexed with Southeast Indian Ridge, Southwest Indian Ridge, and/or Central Indian Ridge as
roedderite  search
BTsilicates
 .ring silicates
 ..roedderite
RTmeteorites
SNMeteorite mineral.
roemerite  search
BTsulfates
 .roemerite
Roermond earthquake 1992  search
BTearthquakes
 .Roermond earthquake 1992
RTNetherlands
 Limburg
 Limburg Netherlands
SNEpicenter in Limburg, SW Netherlands.
roestone  search
USEoolite
Rogaland Norway  search
BTEurope
 .Western Europe
 ..Scandinavia
 ...Norway
 ....Rogaland Norway
NTSandnes Norway
 Sogndal Norway
 Stavanger Norway
SNCounty in SW Norway.
Roger Mills County Oklahoma  search
BTUnited States
 .Oklahoma
 ..Roger Mills County Oklahoma
Rogers County Oklahoma  search
BTUnited States
 .Oklahoma
 ..Rogers County Oklahoma
roggianite  search
BTsilicates
 .orthosilicates
 ..sorosilicates
 ...roggianite
Rogue River  search
BTUnited States
 .Oregon
 ..Rogue River
SNSW Oregon. Also search Rogue.
Rokko Mountains  search
BTogo Japan
 .Rokko Mountains
SNNE of Kobe in Hyogo Prefecture, central Honshu.
Rolette County North Dakota  search
BTUnited States
 .North Dakota
 ..Rolette County North Dakota
roll orebodies  search
USEroll-type deposits
roll-type deposits  search
UFore rolls
 roll orebodies
RTmineral deposits, genesis
 uranium ores
Roma Italy  search
USERome Italy
Romagna  search
BTEurope
 .Southern Europe
 ..Italy
 ...Emilia-Romagna Italy
 ....Romagna
SNHistorical region in N central Italy on the Adriatic Sea.
Romanche Deep  search
USERomanche Trench
Romanche fracture zone  search
BTAtlantic Ocean
 .Romanche fracture zone
RTNorth Atlantic
 South Atlantic
 Mid-Atlantic Ridge
 Equatorial Atlantic
SNCuts across the Mid-Atlantic Ridge between the bulge of South America and Liberia. Indexed with Mid-Atlantic Ridge and/or ocean areas as applicable.
Romanche Gap  search
USERomanche Trench
Romanche Trench  search
BTAtlantic Ocean
 .Romanche Trench
UFRomanche Deep
 Romanche Gap
RTNorth Atlantic
 South Atlantic
 Mid-Atlantic Ridge
 Equatorial Atlantic
SNExtends in a NW-SE direction to the SW of the Romanche fracture zone between bulge of South America and Liberia. Indexed with Mid-Atlantic Ridge and/or ocean areas as applicable.
Romania  search
BTEurope
 .Southern Europe
 ..Romania
NTAltin-Tepe
 Apuseni Mountains
 Arad Romania
 Arges River
 Babadag Lake basin
 Bacau Romania
 Bicaz Valley
 Bistrita Mountains
 Bistrita Valley
 Bucegi Mountains
 Constanta Romania
 Dacian Basin
 Delinesti Romania
 Fagaras Mountains
 Getic Nappe
 Gutii Mountains
 Haghimas Syncline
 Iacobeni Romania
 Jiu River valley
 Mehadia Romania
 Mehedinti Plateau
 Moldava Valley
 Moldavian Platform
 Moldova Noua Romania
 Olt River
 Olt River valley
 Paring Mountains
 Piatra-Neamt Romania
 Rarau Massif
 Resita Romania
 Romanian Dobruja
 Romanian Pannonian Basin
 Romanian Plain
 Rusca Montana Romania
 Sasca-Montana Romania
 Semenic Mountains
 Severin
 Suceava Romania
 Sulina Romania
 Svinita Romania
 Teleajen Valley
 Transylvania
 Transylvanian Alps
 Trotus Valley
 Tulcea Romania
 Vrancea
 Walachia
 Zarand Basin
UFRoumania
 Rumania
RTBalkan Peninsula
 Banat
 Carpathians
 Black Sea region
 Bukovina
 Carpathian Foredeep
 Carpathian Foreland
 Da
Romania Plain  search
USERomanian Plain
Romanian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Neogene
 ....Pliocene
 .....upper Pliocene
 ......Romanian
SNProvincial series, Europe.
Romanian Dobruja  search
BTEurope
 .Southern Europe
 ..Romania
 ...Romanian Dobruja
BTEurope
 .Southern Europe
 ..Dobruja Basin
 ...Romanian Dobruja
UFDobrogea
RTAltin-Tepe
 Babadag Lake basin
 Constanta Romania
 Mangalia Romania
 Sulina Romania
 Tulcea Romania
SNRegion on the Black Sea. Before 1981, search Dobruja AND Romania. This term has multiple hierarchies. Added to Thesaurus in 1982.
Romanian Pannonian Basin  search
BTEurope
 .Pannonian Basin
 ..Romanian Pannonian Basin
BTEurope
 .Southern Europe
 ..Romania
 ...Romanian Pannonian Basin
SNThis term has multiple hierarchies. Added to Thesaurus in 1982.
Romanian Plain  search
BTEurope
 .Southern Europe
 ..Romania
 ...Romanian Plain
UFRomania Plain
RTMoldavia
 Walachia
 Siret River
SNArea between the Transylvanian Alps on the N, and the Danube River on the S and E. Indexed with regions as applicable.
Romashkino Field  search
BTCommonwealth of Independent States
 .Russian Federation
 ..Orenburg Russian Federation
 ...Romashkino Field
RToil and gas fields
SNOrenburg Oblast in Southern Urals. Before 1978, also search Romashkino; Romashkino oil field. This term has multiple hierarchies.
Rome Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Cambrian
 ....Lower Cambrian
 .....Rome Formation
RTVirginia
 Alabama
 North Carolina
 Georgia
 Tennessee
 Chilhowee Group
SNNamed for exposures south of Rome, Georgia.
Rome Italy  search
BTEurope
 .Southern Europe
 ..Italy
 ...Latium Italy
 ....Rome Italy
UFRoma Italy
SNProvince including the city on the Tiber River.
Rome Trough  search
RTAppalachian Basin
 Georgia
 Kentucky
 Southern Appalachians
 Tennessee
 United States
 West Virginia
SNS Appalachians from Georgia to West Virginia. Indexed with states or region as applicable. Added to Thesaurus in 1985.
Ronda Massif  search
USESerrania de Ronda
Ronda Sierra  search
USESerrania de Ronda
Ronda, Serrania de  search
USESerrania de Ronda
Rondonia Brazil  search
BTSouth America
 .Brazil
 ..Rondonia Brazil
UFGuapore Brazil
SNState in W Brazil on Bolivian border.
Rondout Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Rondout Formation
RTLower Devonian
 Pennsylvania
 New York
 Upper Silurian
SNUpper Silurian and Lower Devonian. New York and Pennsylvania. Includes Fuyk Sandstone Member. Indexed with ages as applicable.
ronian  search
NTGowganda Formation
 Onaping Formation
 Signal Hill Formation
Ronne Ice Shelf  search
BTAntarctica
 .Ronne Ice Shelf
RTWeddell Sea
 Filchner Ice Shelf
SNAdjacent to Weddell Sea and Filchner Ice Shelf. Added to Thesaurus in 1989.
roof control  search
RTmines
 mining geology
 underground mining
SNAdded to Thesaurus in 1985.
Rooks County Kansas  search
BTUnited States
 .Kansas
 ..Rooks County Kansas
SNNW central Kansas.
Roorkee India  search
BTAsia
 .Indian Peninsula
 ..India
 ...Uttar Pradesh India
 ....Roorkee India
UFRurki India
SNTown in N Uttar Pradesh.
Roosevelt County Montana  search
BTUnited States
 .Montana
 ..Roosevelt County Montana
SNNE Montana.
Roosevelt County New Mexico  search
BTUnited States
 .New Mexico
 ..Roosevelt County New Mexico
SNE New Mexico.
Roosevelt Hot Springs  search
USERoosevelt Hot Springs KGRA
Roosevelt Hot Springs KGRA  search
BTUnited States
 .Utah
 ..Beaver County Utah
 ...Roosevelt Hot Springs KGRA
UFKGRA, Roosevelt Hot Springs
 Roosevelt Hot Springs
RTgeothermal fields
SNKnown Geothermal Resources Area. SW Utah, in Beaver County. Added to Thesaurus in 1981.
root casts  search
USErhizoliths
root clay  search
USEunderclay
Root River  search
RTFillmore County Minnesota
 Houston County Minnesota
 Mackenzie District Northwest Territories
 Minnesota
 Northwest Territories
 Racine County Wisconsin
 Waukesha County Wisconsin
 Wisconsin
SNRiver in Fillmore and Houston counties, extreme SE Minnesota. Also in Waukesha and Racine counties, extreme SE Wisconsin. Also in SW Mackenzie District, Northwest Territories. Indexed with states and counties; or province as applicable. Added to Thesaurus
roots  search
RTflowers
 fossil wood
 fossils
 paleobotany
 Plantae
 rhizoliths
 vegetation
 wood
SNAdded to Thesaurus in 1985.
roquesite  search
BTsulfides
 .roquesite
Roraima Brazil  search
BTSouth America
 .Brazil
 ..Roraima Brazil
SNState in N Brazil.
Roraima Formation  search
RTBrazil
 Guyana
 South America
 Venezuela
SNTentatively dated from Paleoproterozoic to as young as Miocene. In the Pacaraima Mountains. Indexed with age or ages as applicable.
Ros River valley  search
BTEurope
 .Ukraine
 ..Ros River valley
SNW central Ukraine. Also search Ros; Ros River. This term has multiple hierarchies.
Rosario Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Upper Cretaceous
 .....Rosario Formation
RTCampanian
 Mexico
 Baja California
 Maestrichtian
 Point Loma Formation
Roscommon County Michigan  search
BTUnited States
 .Michigan
 ..Michigan Lower Peninsula
 ...Roscommon County Michigan
SNN central Michigan.
ROSE  search
USERivera Ocean Seismic Experiment
Rose Canyon Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Eocene
 .....Rose Canyon Formation
RTCalifornia
SNLower and middle Eocene. Overlies Torrey Sand; underlies Poway Conglomerate. S California. Type section in San Diego County.
Rose Hill Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Silurian
 ....Middle Silurian
 .....Rose Hill Formation
RTVirginia
 Pennsylvania
 Maryland
 Clinton Group
SNIn Clinton Group. Maryland, Pennsylvania and N Virginia. Added to Thesaurus in 1985.
Rose Run Sandstone  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...lower Paleozoic
 ....Rose Run Sandstone
RTLower Ordovician
 Kentucky
 Ohio
 West Virginia
 Upper Cambrian
 Beekmantown Group
 Knox Group
SNIn Knox Group or Beekmantown Group. Upper Cambrian to Lower Ordovician. S Ohio, N Kentucky, and West Virginia. Indexed with age as applicable. Added to Thesaurus in 1995.
Roseau County Minnesota  search
BTUnited States
 .Minnesota
 ..Roseau County Minnesota
Rosebery Australia  search
BTAustralasia
 .Australia
 ..Tasmania Australia
 ...Rosebery Australia
SNVillage in W Tasmania.
Rosebud County Montana  search
BTUnited States
 .Montana
 ..Rosebud County Montana
SNE central Montana.
Rosetown Saskatchewan  search
BTCanada
 .Western Canada
 ..Saskatchewan
 ...Rosetown Saskatchewan
SNTown in SW Saskatchewan.
Rosia Romania  search
BTEurope
 .Southern Europe
 ..Romania
 ...Transylvania
 ....Bihor Romania
 .....Rosia Romania
SNVillage 25 miles SE of Oradea in Bihor County in W Transylvania.
Rosidae  search
BTPlantae
 .Spermatophyta
 ..Angiospermae
 ...Dicotyledoneae
 ....Rosidae
Ross Barrier  search
USERoss Ice Shelf
Ross County Ohio  search
BTUnited States
 .Ohio
 ..Ross County Ohio
Ross Dependency  search
BTAntarctica
 .Ross Dependency
RTBeacon Supergroup
 Beacon Valley
 Buckley Formation
 Beardmore Glacier
 Coalsack Bluff
 Fremouw Formation
 LEW 88516
 Lewis Cliff Meteorites
 Wright Valley
SNSection lying S of 60#DG S and between 160#DG E and 150#DG W extending to the South Pole. Placed under jurisdiction of New Zealand in 1923 by act of British Parliament. Also search Ross and Antarctica.
Ross Formation  search
RTAntarctica
 Devonian
 Lower Devonian
 Middle Devonian
 Mississippi
 New Zealand
 Tasmania Australia
 Tennessee
 Triassic
SNLower Devonian and Middle Devonian. W Tennessee and Mississippi. Also cited in Antarctica, Tasmania (Ross Sandstone, Triassic), and New Zealand. Indexed with ages and locations as applicable. Added to Thesaurus in 1993.
Ross Ice Shelf  search
BTAntarctica
 .Ross Ice Shelf
UFRoss Barrier
RTBeacon Supergroup
 Queen Maud Range
 Beardmore Glacier
 Coalsack Bluff
 Fremouw Formation
 LEW 88516
 Lewis Cliff Meteorites
 Ross Sea
 Ross Island
 McMurdo Ice Shelf
 Shackleton Glacier
SNCovers S part of Ross Sea between Marie Byrd Land and Victoria Land with its S end at the foot of Queen Maud Range on the edge of the Antarctic continent. Also search Ross and Antarctica.
Ross Island  search
BTAntarctica
 .Ross Island
RTRoss Ice Shelf
 Mount Erebus
 Hut Point Peninsula
SNIn Ross Sea at W end of Ross Ice Shelf separated from Victoria Land by McMurdo Sound. Also search Ross and Antarctica.
Ross Orogeny  search
RTAntarctica
 Cambrian
 Neoproterozoic
 Ordovician
 orogeny
 Pan-African Orogeny
 Queen Maud Land
 tectonics
 Victoria Land
SN?Cambrian-Ordovician. May have begun in the Neoproterozoic. In Transantarctic Mountains, S Victoria Land and Queen Maud Land, Antarctica. Indexed with ages as applicable. Added to Thesaurus in 1995.
Ross Sea  search
BTAntarctic Ocean
 .Ross Sea
RTPacific Ocean
 Leg 28
 Ross Ice Shelf
 DSDP Site 270
 DSDP Site 271
 DSDP Site 272
 DSDP Site 273
 DSDP Site 274
 Terra Nova Bay
 Victoria Land Basin
SNArm of S Pacific Ocean just N of Ross Ice Shelf between Victoria Land and Edward VII Peninsula. Also search Ross and Antarctic Ocean.
Ross-shire Scotland  search
BTghland region Scotland
 .Ross-shire Scotland
SNA separate county until the 17th century but became part of Ross and Cromarty County in N Scotland. In 1974, became part of Highland region.
Rosses Granite  search
BTEurope
 .Western Europe
 ..Ireland
 ...Donegal Ireland
 ....Rosses Granite
SNIn Rosses ring complex.
Rossland British Columbia  search
BTCanada
 .Western Canada
 ..British Columbia
 ...Rossland British Columbia
SNCity in SE British Columbia.
Rostock Bezirk  search
SNNo longer a valid term for GeoRef. District in N East Germany. See Mecklenburg-Western Pomerania Germany.
Rostov Russian Federation  search
BTCommonwealth of Independent States
 .Russian Federation
 ..Rostov Russian Federation
BTEurope
 .Rostov Russian Federation
NTAzov Russian Federation
 Rostov-na-Donu Russian Federation
SNOblast in Black Sea region, Russian Federation. Before 1993, Rostov Russian Republic was also used. This term has multiple hierarchies.
Rostov-na-Donu Russian Federation  search
BTCommonwealth of Independent States
 .Russian Federation
 ..Rostov Russian Federation
 ...Rostov-na-Donu Russian Federation
RTDon River
SNCity in Rostov (oblast). Before 1993, Rostov-na-Donu Russian Republic was also used. This term has multiple hierarchies.
Rostroconchia  search
BTInvertebrata
 .Mollusca
 ..Rostroconchia
Rotalia  search
BTInvertebrata
 .Protista
 ..Foraminifera
 ...Rotaliina
 ....Rotaliacea
 .....Rotalia
RTmicrofossils
SNGenus. Indexed with microfossils if applicable.
Rotaliacea  search
BTInvertebrata
 .Protista
 ..Foraminifera
 ...Rotaliina
 ....Rotaliacea
NTAmmonia
 Elphidium
 Heterostegina
 Miogypsinidae
 Nummulitidae
 Rotalia
RTmicrofossils
SNIndexed with microfossils if applicable.
Rotaliina  search
BTInvertebrata
 .Protista
 ..Foraminifera
 ...Rotaliina
NTBuliminacea
 Carterinacea
 Cassidulinacea
 Discorbacea
 Globigerinacea
 Lagenidae
 Nodosariacea
 Orbitoidacea
 Robertinacea
 Rotaliacea
 Spirillinacea
RTmicrofossils
SNIndexed with microfossils if applicable.
Rotalipora  search
BTInvertebrata
 .Protista
 ..Foraminifera
 ...Rotaliina
 ....Globigerinacea
 .....Rotalipora
RTmicrofossils
SNGenus. Indexed with microfossils if applicable.
rotation  search
RTEarth
 length of day
 motions
 plate rotation
 torque
SNSee plate rotation.
rotational wave  search
USES-waves
Rotliegendes  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Permian
 ....Rotliegendes
RTLower Permian
 Autunian
 Middle Permian
 Leman Sandstone Formation
 Saxonian
SNEurope. Below Zechstein.
Rotterdam Netherlands  search
BTEurope
 .Western Europe
 ..Netherlands
 ...Rotterdam Netherlands
SNSouth Holland Province, SW Netherlands.
Rottleberode Germany  search
BTEurope
 .Central Europe
 ..Germany
 ...Saxony-Anhalt Germany
 ....Rottleberode Germany
SNVillage in Saxony-Anhalt, E Germany.
Rouen France  search
BTEurope
 .Western Europe
 ..France
 ...Seine-Maritime France
 ....Rouen France
SNCity on the Seine River in S Seine-Maritime, N France.
Rouergue  search
BTEurope
 .Western Europe
 ..France
 ...Rouergue
RTAveyron France
 Tarn-et-Garonne France
SNAncient province. Primarily in Aveyron Department in S central France. Indexed with departments as applicable.
Rough Creek fault zone  search
BTUnited States
 .Kentucky
 ..Rough Creek fault zone
SNW Kentucky.
roughness  search
RThydraulics
 permeability
 reservoir rocks
Roumania  search
USERomania
Round Mountain  search
RTNye County Nevada
SNLocation of gold deposits in Nye County, S central Nevada. Also in numerous other locations. Indexed with state or region as applicable.
rounding  search
RTparticles
 pebbles
 roundness
 sand
 sedimentary rocks
 sorting
roundness  search
RTparticles
 rounding
 sediments
 shape analysis
 sphericity
Roussillon  search
BTEurope
 .Western Europe
 ..France
 ...Roussillon
RTPyrenees-Orientales France
SNRegion and former province roughly coextensive with Pyrenees-Orientales Department on the Spanish border.
Routt County Colorado  search
BTUnited States
 .Colorado
 ..Routt County Colorado
RTYampa River
 Steamboat Springs
SNNW Colorado.
Rouville County Quebec  search
BTCanada
 .Eastern Canada
 ..Quebec
 ...Rouville County Quebec
Rouyn Quebec  search
BTCanada
 .Eastern Canada
 ..Quebec
 ...Temiscamingue County Quebec
 ....Rouyn Quebec
SNMining city in SW Quebec near N Ontario border.
Rowan County Kentucky  search
BTUnited States
 .Kentucky
 ..Rowan County Kentucky
SNNE Kentucky.
Rowan County North Carolina  search
BTUnited States
 .North Carolina
 ..Rowan County North Carolina
SNW central North Carolina.
Rowne  search
SNNot a valid term for GeoRef. Use Zloty Stok Poland if applicable.
Roxana Silt  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Quarternary
 ....Pleistocene
 .....Roxana Silt
RTKentucky
 Illinois
SNSW Illinois and W Kentucky. Added to Thesaurus in 1989.
Roxbury Conglomerate  search
RTBoston Bay Group
 Lower Cambrian
 Massachusetts
 Neoproterozoic
SNIn Boston Bay Group. E Massachusetts. Previously thought to be Devonian or Carboniferous in age. Includes Brookline, Squantum and Dorchester members. Indexed with ages as applicable. Added to Thesaurus in 1989.
Roy Group  search
BTChronostratigraphic Units
 .Precambrian
 ..Archean
 ...Roy Group
RTQuebec
SNAdded to Thesaurus in 1989.
Royal Creek  search
BTCanada
 .Western Canada
 ..Yukon Territory
 ...Royal Creek
Rozdol Ukraine  search
BTEurope
 .Ukraine
 ..Rozdol Ukraine
RTLvov Ukraine
SNTown in Lvov Oblast in E Ukraine. This term has multiple hierarchies. Indexed with oblast as applicable.
rozenite  search
BTsulfates
 .rozenite
Roztocze  search
BTEurope
 .Roztocze
UFTomaszow-Lvov Ridge
RTPoland
 Ukraine
 Lvov Ukraine
SNMountain range. Indexed with Poland and/or Ukraine as applicable.