Br  search
USEbromine
Braarudosphaeridae  search
BTPlantae
 .algae
 ..nannofossils
 ...Braarudosphaeridae
RTmicrofossils
SNIndexed with microfossils if applicable.
Brabant Belgium  search
BTEurope
 .Western Europe
 ..Belgium
 ...Brabant Belgium
NTBrussels Belgium
 Louvain Belgium
SNProvince in central Belgium.
Brabant Massif  search
BTEurope
 .Western Europe
 ..Belgium
 ...Brabant Massif
Brachiopoda  search
BTInvertebrata
 .Brachiopoda
NTArticulata
 Inarticulata
RTreef builders
Brachiopterygii  search
BTChordata
 .Vertebrata
 ..Pisces
 ...Osteichthyes
 ....Brachiopterygii
Brachyura  search
BTInvertebrata
 .Arthropoda
 ..Mandibulata
 ...Crustacea
 ....Malacostraca
 .....Brachyura
SNSuborder.
Bracken County Kentucky  search
BTUnited States
 .Kentucky
 ..Bracken County Kentucky
brackish water  search
RTbrackish-water environment
 ecology
 hydrochemistry
 paleosalinity
 salinity
 salt lakes
 salt water
 sea water
 water
SNBefore 1978, also search brackish.
brackish-water environment  search
RTaquatic environment
 brackish water
 deep-water environment
 depositional environment
 ecology
 fresh-water environment
 salinity
 salt marshes
 swamps
 tidal flats
SNBefore 1978, also search brackish or brackish water.
Bracklesham Beds  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Bracklesham Beds
RTEngland
SNAdded to Thesaurus in 1989.
Brad Romania  search
BTEurope
 .Southern Europe
 ..Romania
 ...Transylvania
 ....Brad Romania
SNTown in Hunedoara County in W Romania.
Bradford County Florida  search
BTUnited States
 .Florida
 ..Bradford County Florida
SNN Florida.
Bradford County Pennsylvania  search
BTUnited States
 .Pennsylvania
 ..Bradford County Pennsylvania
RTChemung River
SNNE Pennsylvania.
Bradley County Arkansas  search
BTUnited States
 .Arkansas
 ..Bradley County Arkansas
Bradley County Tennessee  search
BTUnited States
 .Tennessee
 ..Bradley County Tennessee
Bradyodonti  search
BTChordata
 .Vertebrata
 ..Pisces
 ...Chondrichthyes
 ....Elasmobranchii
 .....Bradyodonti
Braganca Portugal  search
BTEurope
 .Southern Europe
 ..Iberian Peninsula
 ...Portugal
 ....Braganca Portugal
RTTras-os-Montes
SNDistrict in NE Portugal. Also a city.
Brahmaputra River  search
BTAsia
 .Brahmaputra River
RTIndian Peninsula
 India
 China
 Bangladesh
 Xizang China
SNRises in the Kailas Range of SW Xizang; it flows E across S Xizang, then S, SW, and again S through Bangladesh where it becomes the Jamuna River which merges with the Ganges River in the Ganges-Brahmaputra Delta on the Bay of Bengal. Indexed with Xizang C
braided channels  search
USEbraided streams
braided streams  search
BTstreams
 .braided streams
UFanastomosing streams
 braided channels
RTsedimentation
 geomorphology
 fluvial features
 gravel-bed streams
 channels
SNIndexed with fluvial features as applicable.
Braila Romania  search
BTEurope
 .Southern Europe
 ..Romania
 ...Walachia
 ....Braila Romania
SNCity and county in NE Walachia.
brain cases  search
USEcraniums
braincases  search
USEcraniums
brains  search
USEskulls
Brallier Shale  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Devonian
 ....Upper Devonian
 .....Brallier Shale
RTVirginia
 Pennsylvania
 West Virginia
SNIn Susquehanna Group. Central Pennsylvania, Virginia and West Virginia. Added to Thesaurus in 1985.
Bramsche Germany  search
BTEurope
 .Central Europe
 ..Germany
 ...Lower Saxony Germany
 ....Bramsche Germany
SNTown in SW Lower Saxony.
Branch County Michigan  search
BTUnited States
 .Michigan
 ..Michigan Lower Peninsula
 ...Branch County Michigan
Branchiopoda  search
BTInvertebrata
 .Arthropoda
 ..Mandibulata
 ...Crustacea
 ....Branchiopoda
NTCladocera
UFConchostraca
Brandenburg Germany  search
BTEurope
 .Central Europe
 ..Germany
 ...Brandenburg Germany
NTBerlin Germany
 Cottbus Germany
 Doberlug Germany
 Potsdam Germany
RTNorth German Plain
 Frankfurt Germany
 Oder Valley
SNState in NE Germany. Before 1993, used as region. Includes the town on the Havel River.
Brandenburg Stade  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Quarternary
 ....Pleistocene
 .....Upper Pleistocene
 ......Weichselian
 .......Brandenburg Stade
SNEurope. Before 1978, also search Brandenburg.
Brandon  search
RTEngland
 Warwickshire England
SNRegion in Warwickshire, central England. After 1992, see Brandon Manitoba for city in SW Manitoba. Before 1989, also included use for the town in Vermont; now use specific city-state term when applicable. Indexed with Warwickshire England or regions as ap
Brandon Manitoba  search
BTCanada
 .Western Canada
 ..Manitoba
 ...Brandon Manitoba
SNCity in SW Manitoba.
Brandon Stade  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Quarternary
 ....Pleistocene
 .....Upper Pleistocene
 ......Weichselian
 .......Brandon Stade
SNEurope. Before 1978, also search Brandon.
Brandon Vermont  search
BTUnited States
 .Vermont
 ..Rutland County Vermont
 ...Brandon Vermont
SNTown in W Vermont.
brannerite  search
BToxides
 .brannerite
RTuranium ores
Bransfield Strait  search
BTAntarctic Ocean
 .Bransfield Strait
RTBellingshausen Sea
 Weddell Sea
SNAntarctic Ocean between South Shetland Islands and Antarctic Peninsula, Antarctica. Connects Weddell Sea on the Atlantic Ocean side with Bellingshausen Sea, Pacific Ocean side. Added to Thesaurus in 1993.
Brant County Ontario  search
BTCanada
 .Eastern Canada
 ..Ontario
 ...Brant County Ontario
Brantley County Georgia  search
BTUnited States
 .Georgia
 ..Brantley County Georgia
Brasov Romania  search
BTEurope
 .Southern Europe
 ..Romania
 ...Transylvania
 ....Brasov Romania
NTHoghiz Romania
SNCity and county in SE Transylvania. From 1950-1960, the city was named Stalin.
Brassfield Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Silurian
 ....Lower Silurian
 .....Brassfield Formation
RTKentucky
 Illinois
 Indiana
 Ohio
 Tennessee
 Arkansas
SNConsidered to consist of lower dolomitic limestone, including Whitfieldella bed, and Plum Creek Clay Member above. In central N Arkansas, S Indiana, SW Illinois, central Kentucky, SW Ohio, and S Tennessee.
Bratislava Slovakia  search
BTEurope
 .Central Europe
 ..Slovakia
 ...Bratislava Slovakia
SNCity and region on the Danube River in SW Slovakia. Before 1995, Bratislava Czechoslovakia was also used.
braunite  search
BTsilicates
 .orthosilicates
 ..nesosilicates
 ...braunite
RTmanganese ores
Braunschweig Germany  search
USEBrunswick Germany
Bravais lattice  search
USElattice
bravoite  search
BTsulfides
 .bravoite
RTpyrite
Brawley Fault  search
BTUnited States
 .California
 ..Imperial County California
 ...Brawley Fault
UFBrawley seismic zone
SNS California. Added to Thesaurus in 1989.
Brawley seismic zone  search
USEBrawley Fault
Braxton County West Virginia  search
BTUnited States
 .West Virginia
 ..Braxton County West Virginia
Brazil  search
BTSouth America
 .Brazil
NTAcre Brazil
 Alagoas Brazil
 Amapa Brazil
 Amazonas Brazil
 Araripe Basin
 Bahia Brazil
 Borborema
 Brazilian Shield
 Ceara Brazil
 Espirito Santo Brazil
 Goias Brazil
 Maranhao Basin
 Maranhao Brazil
 Mato Grosso Brazil
 Minas Gerais Brazil
 Para Brazil
 Paraiba Brazil
 Parana Brazil
 Parnaiba Basin
 Pelotas Basin
 Pernambuco Brazil
 Piaui Brazil
 Recife-Joao Pessoa
 Rio de Janeiro Brazil
 Rio Grande do Norte Brazil
 Rio Grande do Sul Brazil
 Rondonia Brazil
 Roraima Brazil
 Santa Catarina Brazil
 Sao Francisco Basin
 Sao Francisco Craton
 Sao Paulo Brazil
 Sergipe Brazil
 Sergipe-Alagoas Basin
 Serra do Espinhaco
 Serra do Mar
 Tocantins River region
RTAcungui Group
 Altiplano
 Amazon Basin
 Amazon River
 Areado Formation
 Colorado River
 Barreiras Formation
 Bambui Group
 Bauru Formation
 Botucatu Formation
 Estrada Nova Formation
 Guiana Basin
 Guyana Shield
 Irati Formation
 Itarare Subgroup
 Minas Series
 Parana Ba
Brazil Basin  search
BTAtlantic Ocean
 .South Atlantic
 ..Brazil Basin
RTAntarctic Bottom Water
 DSDP Site 515
 Vema Channel
 Leg 39
 DSDP Site 19
 DSDP Site 20
 DSDP Site 21
 DSDP Site 23
 DSDP Site 24
 DSDP Site 355
 Leg 3
 Leg 72
SNIn SW Atlantic. Added to Thesaurus in 1989.
Brazilian Cycle  search
RTcycles
 tectonics
SNTectonic cycle. Added to Thesaurus in 1989.
Brazilian Shield  search
BTSouth America
 .Brazil
 ..Brazilian Shield
UFAmazonian Shield
RTParana Brazil
 Sao Paulo Brazil
 Minas Gerais Brazil
 Bahia Brazil
 Para Brazil
 Maranhao Brazil
 Mato Grosso Brazil
 Goias Brazil
 Santa Catarina Brazil
SNThe Brazilian uplands of N central, E central, and S Brazil. Indexed with states as applicable.
Brazoria County Texas  search
BTUnited States
 .Texas
 ..Brazoria County Texas
NTPleasant Bayou
SNOn Gulf of Mexico in SE Texas.
Brazos County Texas  search
BTUnited States
 .Texas
 ..Brazos County Texas
RTIola Field
SNE central Texas.
Brazos River  search
BTUnited States
 .Texas
 ..Brazos River
SNCentral Texas.
Brazzaville Congo  search
BTAfrica
 .Central Africa
 ..Congo
 ...Brazzaville Congo
SNCity on the Congo River across from Kinshasa.
break (knickpoint)  search
USEknickpoints
breakers  search
USEbreaking waves
breaking strength  search
USEfracture strength
breaking waves  search
BTocean waves
 .breaking waves
UFbreakers
RTwaves
SNBefore 1978, also search waves AND breaking.
breakouts  search
USEborehole breakouts
breakthrough curves  search
RTconcentration
 ground water
 preferential flow
 soils
 solute transport
 solutes
 tracers
SNMeasure solute concentration of fluids entering a soil column.
breakwaters  search
BTmarine installations
 .breakwaters
UFwater-break
RTengineering geology
 shorelines
 tombolos
Breathitt County Kentucky  search
BTUnited States
 .Kentucky
 ..Breathitt County Kentucky
SNE central Kentucky.
Breathitt Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Pennsylvanian
 .....Middle Pennsylvanian
 ......Breathitt Formation
RTKentucky
 Pottsville Group
SNIn Pottsville Group. In SE Kentucky.
breccia  search
BTsedimentary rocks
 .clastic rocks
 ..breccia
NTtectonic breccia
 volcanic breccia
UFrubblerock
RTtectonics
 faults
 agglomerate
 conglomerate
 gravel
 structural analysis
 sediments
 EET 87521
 terrigenous materials
 meteor craters
 breccia pipes
 brecciation
 gouge
 lunar breccia
 megabreccia
 microbreccia
 shear zones
 slickensides
 suevite
SNAs of 1981, use lunar breccia for breccia on the Moon.
breccia pipes  search
BTintrusions
 .pipes
 ..breccia pipes
RTvolcanism
 breccia
 volcanoes
 volcanic rocks
 diatremes
 plugs
 volcanic breccia
brecciation  search
RTbreccia
 processes
Breckinridge County Kentucky  search
BTUnited States
 .Kentucky
 ..Breckinridge County Kentucky
Brecknock (shire)  search
USEBrecknockshire Wales
Brecknockshire Wales  search
BTEurope
 .Western Europe
 ..United Kingdom
 ...Great Britain
 ....Wales
 .....Powys Wales
 ......Brecknockshire Wales
UFBrecknock (shire)
 Breconshire Wales
SNFormer county SE Wales. As of April 1974, part of Powys. Before 1993, also search Brecon.
Breconshire Wales  search
USEBrecknockshire Wales
Breidamerkurjokull  search
BTEurope
 .Western Europe
 ..Iceland
 ...Breidamerkurjokull
SNGlacier.
Bremen Germany  search
BTEurope
 .Central Europe
 ..Germany
 ...Lower Saxony Germany
 ....Bremen Germany
RTWeser River
SNCity state in NW Germany.
Bremer County Iowa  search
BTUnited States
 .Iowa
 ..Bremer County Iowa
Brenham Texas  search
BTUnited States
 .Texas
 ..Washington County Texas
 ...Brenham Texas
SNCity in SE central Texas.
Brent Crater  search
BTCanada
 .Eastern Canada
 ..Ontario
 ...Nipissing District Ontario
 ....Brent Crater
RTimpact features
SNMeteor crater at Brent in Algonquin Provincial Park E of Georgian Bay.
Brent Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Jurassic
 ....Middle Jurassic
 .....Bajocian
 ......Brent Group
RTBroom Formation
 Etive Formation
 Rannoch Formation
 Ness Formation
 North Sea
 Tarbert Formation
SNAdded to Thesaurus in 1989.
Brescia Italy  search
BTEurope
 .Southern Europe
 ..Italy
 ...Lombardy Italy
 ....Brescia Italy
SNCity and province in E Lombardy.
Breslau Poland  search
USEWroclaw Poland
Brest Basin  search
BTEurope
 .Brest Basin
RTPoland
 Ukraine
 Belarus
SNNamed after city of Brest in SW Belarus. Indexed with Poland and former Soviet republics as applicable.
Brest Belarus  search
BTEurope
 .Belarus
 ..Brest Belarus
SNCity in SW Belarus. This term has multiple hierarchies.
Brest France  search
BTEurope
 .Western Europe
 ..France
 ...Finistere France
 ....Brest France
SNCity on the Atlantic in W France.
Brevard County Florida  search
BTUnited States
 .Florida
 ..Brevard County Florida
NTCape Canaveral
SNOn the Atlantic Ocean in central Florida.
Brevard fault zone  search
USEBrevard Zone
Brevard Zone  search
BTUnited States
 .Brevard Zone
UFBrevard fault zone
RTSouth Carolina
 Appalachians
 Alabama
 North Carolina
 West Virginia
 Georgia
 Southern Appalachians
SNS and Central Appalachians. Indexed with Appalachians and states as applicable.
Brewster County Texas  search
BTUnited States
 .Texas
 ..Brewster County Texas
NTBig Bend National Park
 Mule Ear Diatreme
 Terlingua Texas
RTRattlesnake Mountain
 Christmas Mountains
 Davis Mountains
 Glass Mountains
SNExtreme SW Texas.
Brezno Slovakia  search
BTEurope
 .Central Europe
 ..Slovakia
 ...Brezno Slovakia
SNTown in central Slovakia. Before 1995, Brezno Czechoslovakia was also used.
Briancon France  search
BTutes-Alpes France
 .Briancon France
SNTown in SE France.
Briancon Zone  search
USEBrianconnais Zone
Brianconnais Zone  search
BTEurope
 .Brianconnais Zone
UFBriancon Zone
 Brianconnaise Zone
RTMesozoic
 Jurassic
 Cretaceous
 Tertiary
 Paleocene
 Eocene
 Permian
 Italy
 France
 Alps
SNSE France and NW Italy. Indexed with countries as applicable.
Brianconnaise Zone  search
USEBrianconnais Zone
briartite  search
BTsulfides
 .briartite
brick clays  search
SNNot a valid term for GeoRef. Use clays.
brides  search
NTInner Hebrides
 Outer Hebrides
Bridge Creek Limestone Member  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Upper Cretaceous
 .....Bridge Creek Limestone Member
RTColorado
 Kansas
 Greenhorn Limestone
SNOf Greenhorn Limestone. SE Colorado and W Kansas. Added to Thesaurus in 1989.
Bridger Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Eocene
 .....Bridger Formation
RTUtah
 Wyoming
 Colorado
SNMiddle and upper? Eocene. SW Wyoming, NW Colorado and NE Utah. Added to Thesaurus in 1985.
Bridger Range  search
BTUnited States
 .U. S. Rocky Mountains
 ..Bridger Range
BTUnited States
 .Montana
 ..Bridger Range
RTMeagher County Montana
 Gallatin County Montana
 Park County Montana
SNSW Montana. This term has multiple hierarchies. Indexed with counties as applicable. Added to Thesaurus in 1985.
Bridgerian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Eocene
 .....Bridgerian
SNNorth America.
bridges  search
RTabutments
 engineering geology
 foundations
 geomorphology
 highways
 natural curiosities
SNRestricted; used for the man-made structures. For the naturally occurring, archlike features, use natural curiosities.
brief report  search
USEreport
Brigham Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Cambrian
 ....Brigham Group
RTIdaho
 Utah
 Washington
SNLower and Middle Cambrian. SE Idaho, NE Utah and NE Washington. Added to Thesaurus in 1989.
Bright Angel Shale  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Cambrian
 ....Middle Cambrian
 .....Bright Angel Shale
RTCalifornia
 Nevada
 Arizona
SNN Arizona, SE California and S Nevada. Added to Thesaurus in 1985.
bright spots  search
SNNot a valid term for GeoRef. As of 1993, use hydrocarbon indicators if applicable.
brightness  search
UFluminance
RTproperties
 remote sensing
 albedo
 reflectance
 optical properties
 luminescence
 surface properties
SNAdded to Thesaurus in 1995.
Brillouin spectra  search
BTspectra
 .Brillouin spectra
RTspectroscopy
 acoustical methods
 crystallography
 wave dispersion
 vibrational spectra
 thermal analysis data
 vibration
SNData from Brillouin spectroscopy. Also search Brillouin scattering if applicable. Added to Thesaurus in 1995.
BRIM  search
UFBlack River-Matheson Program
RTOntario
 Cochrane District Ontario
 programs
SNAcronym for program in Cochrane District, Ontario. Added to Thesaurus in 1989.
Brindisi Italy  search
BTEurope
 .Southern Europe
 ..Italy
 ...Apulia Italy
 ....Brindisi Italy
SNCity and province on the S Adriatic Sea.
brine  search
USEbrines
brines  search
UFbrine
RThydrochemistry
 geothermal systems
 salt lakes
 salt water
 sea water
 bromine
 bromine deposits
 desalinization
 geothermal energy
 iodine
 iodine deposits
 mineral waters
 salt
 salt-water intrusion
 thermal waters
Brioverian  search
BTChronostratigraphic Units
 .Precambrian
 ..Proterozoic
 ...Neoproterozoic
 ....Brioverian
SNEurope.
Brisbane Australia  search
BTAustralasia
 .Australia
 ..Queensland Australia
 ...Brisbane Australia
SNCity in extreme SE Queensland.
Briscoe County Texas  search
BTUnited States
 .Texas
 ..Briscoe County Texas
Bristol Bay  search
BTPacific Ocean
 .North Pacific
 ..Bering Sea
 ...Bristol Bay
BTPacific Ocean
 .North Pacific
 ..Northeast Pacific
 ...Bristol Bay
SNBetween SW Alaskan mainland and Alaska Peninsula. This term has multiple hierarchies.
Bristol Channel  search
BTEurope
 .Western Europe
 ..United Kingdom
 ...Great Britain
 ....Bristol Channel
RTEngland
 Wales
 Swansea Bay
SNArm of Atlantic Ocean. Indexed with England and/or Wales.
Bristol County Massachusetts  search
BTUnited States
 .Massachusetts
 ..Bristol County Massachusetts
Bristol County Rhode Island  search
BTUnited States
 .Rhode Island
 ..Bristol County Rhode Island
Bristol England  search
BTEurope
 .Western Europe
 ..United Kingdom
 ...Great Britain
 ....England
 .....Avon England
 ......Bristol England
RTGloucestershire England
SNCity on the Bristol Channel in SW central England.
britholite  search
BTphosphates
 .britholite
BTsilicates
 .orthosilicates
 ..britholite
SNThis term has multiple hierarchies.
British Columbia  search
BTCanada
 .Western Canada
 ..British Columbia
NTAlbert Canyon British Columbia
 Alice Arm British Columbia
 Atlin British Columbia
 Bowser Basin
 Cariboo Mountains
 Crowsnest Pass
 Dogtooth Mountains
 Endako British Columbia
 Esplanade Range
 Fernie Basin
 Fraser River delta
 Guichon Creek Batholith
 Hope British Columbia
 Kamloops British Columbia
 Kimberley British Columbia
 Kootenay Lake
 Manning Park
 Mount Meager
 Omineca Mountains
 Pinchi Lake
 Prince Rupert British Columbia
 Princeton British Columbia
 Queen Charlotte Islands
 Queen Charlotte Sound
 Revelstoke British Columbia
 Rossland British Columbia
 Saanich Inlet
 Salmo British Columbia
 Sifton Basin
 Skeena Mountains
 Slocan mining camp
 Smithers British Columbia
 Sustut Basin
 Tofino Basin
 Topley Intrusions
 Tulameen coal area
 Vancouver British Columbia
 Vancouver Island
 Ware British Columbia
RTAlexander Terrane
 Altyn Limestone
 Banff Formation
 Aldridge Formation
 Belt Basin
 Belt Sup
British Geological Survey  search
BTgovernment agencies
 .survey organizations
 ..British Geological Survey
RTUnited Kingdom
British Guiana  search
USEGuyana
British Honduras  search
USEBelize
British Institutes Reflection Profiling Syndicate  search
USEBIRPS
British Museum  search
UFBM (NH)
 Natural History Museum of London
RTEngland
 museums
SNIncludes the natural history museum. Added to Thesaurus in 1985.
British North Borneo  search
USESabah Malaysia
British Somaliland  search
USESomali Republic
British Virgin Islands  search
BTCaribbean region
 .West Indies
 ..Antilles
 ...Lesser Antilles
 ....Virgin Islands
 .....British Virgin Islands
NTAnegada Island
RTUnited Kingdom
SNVirgin Islands excluding those of the United States. Before 1978, also search Virgin Islands for British Virgin Islands.
Brittany  search
BTEurope
 .Western Europe
 ..France
 ...Brittany
RTFinistere France
 Cotes-du-Nord France
 Morbihan France
SNRegion and former province occupying peninsula between English Channel and Bay of Biscay.
brittle deformation  search
BTdeformation
 .brittle deformation
UFbrittle fracture
RTtectonics
 structural analysis
 anelasticity
 fractures
 brittle materials
 brittleness
 cataclasis
SNAdded to Thesaurus in 1985.
brittle fracture  search
USEbrittle deformation
brittle materials  search
RTbrittle deformation
 brittleness
 deformation
 materials
 rock mechanics
SNAdded to Thesaurus in 1989.
brittleness  search
RTbrittle deformation
 brittle materials
 deformation
 mechanical properties
 rigidity
 rock mechanics
 strain
 stress
SNAdded to Thesaurus in 1989.
Brive Basin  search
BTEurope
 .Western Europe
 ..France
 ...Brive Basin
UFBrive-la-Gaillarde Basin
RTCorreze France
SNS central France. Also search Brive or Brive-la-Gaillarde if applicable. Indexed with Correze France if applicable.
Brive-la-Gaillarde Basin  search
USEBrive Basin
Brno Czech Republic  search
BTEurope
 .Central Europe
 ..Czech Republic
 ...Moravia
 ....Brno Czech Republic
SNCity in S central Moravia. Before 1995, Brno Czechoslovakia was also used.
Broach India  search
BTAsia
 .Indian Peninsula
 ..India
 ...Gujarat India
 ....Broach India
UFBharuch India
SNCity and district in SE Gujarat, W India.
broad band spectra  search
USEbroad-band spectra
broad-band spectra  search
UFbroad band spectra
 broadband spectra
RTTERRAscope
 spectra
 satellite methods
 electromagnetic methods
 frequency
SNAdded to Thesaurus in 1993.
broadband spectra  search
USEbroad-band spectra
Broadlands  search
RTgeothermal fields
 North Island
 New Zealand
 Taupo volcanic zone
 Wairakei
SNGeothermal field. Central North Island, New Zealand. Indexed with North Island and New Zealand as applicable.
Broadwater County Montana  search
BTUnited States
 .Montana
 ..Broadwater County Montana
RTBig Belt Mountains
SNW central Montana.
brochantite  search
BTsulfates
 .brochantite
Brocken Massif  search
BTEurope
 .Central Europe
 ..Germany
 ...Brocken Massif
RTSaxony-Anhalt Germany
 Harz Mountains
SNIn Harz Mountains in central Germany.
Brockman Iron Formation  search
BTChronostratigraphic Units
 .Precambrian
 ..Brockman Iron Formation
RTAustralia
 Western Australia
 Wittenoom Gorge
SNWittenoom Gorge area in NW Western Australia.
Broegger Peninsula  search
USEBrogger Peninsula
Brogger Peninsula  search
BTArctic region
 .Svalbard
 ..Spitsbergen
 ...Spitsbergen Island
 ....Brogger Peninsula
UFBroegger Peninsula
 Broggerhalvoya
SNOn the Island of Spitsbergen.
Broggerhalvoya  search
USEBrogger Peninsula
Broken Bay  search
BTAustralasia
 .Australia
 ..New South Wales Australia
 ...Broken Bay
RTSouthwest Pacific
SNInlet of Pacific Ocean, N of Sydney, E New South Wales.
Broken Hill  search
RTBroken Hill Block
 metal ores
 New South Wales Australia
SNCity and metals mining center in W New South Wales. As of 1993, use Broken Hill Australia for the city. Indexed with state or region as applicable.
Broken Hill Block  search
BTAustralasia
 .Australia
 ..Broken Hill Block
RTSouth Australia
 New South Wales Australia
 Broken Hill
SNStructural unit, W New South Wales and E South Australia. Indexed with states as applicable. Added to Thesaurus in 1985.
Broken Hill Mine  search
RTbase metals
 Cape Province region
 lead-zinc deposits
 metal ores
 mines
 New South Wales Australia
 Northern Cape Province South Africa
 South Africa
 Zambia
SNMetal ore mine in Broken Hill area, New South Wales. Also base metals mine in Aggeneys, Northern Cape Province, South Africa. Also lead-zinc deposits in Kabwe, Zambia. Before 1993, also search Broken Hill and region and commodity. Indexed with countries a
Broken Ridge  search
RTDSDP Site 255
 Indian Ocean
 Iron County Utah
 Leg 121
 Leg 26
 ODP Site 752
 ODP Site 753
 ODP Site 754
 ODP Site 755
 Wah Wah Mountains
SNSE Indian Ocean. Also ridge in Wah Wah Mountains of Iron County Utah. Search in combination with Indian Ocean or Utah as applicable. Indexed with Indian Ocean or Iron County Utah if applicable. Added to Thesaurus in 1995.
Broken River Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Broken River Formation
RTSilurian
 Devonian
 Queensland Australia
 Australia
SNSilurian and Devonian. NE Queensland. Indexed with ages as applicable.
Brome County Quebec  search
BTCanada
 .Eastern Canada
 ..Quebec
 ...Brome County Quebec
bromellite  search
BToxides
 .bromellite
Bromide Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Ordovician
 ....Middle Ordovician
 .....Bromide Formation
RTOklahoma
 Simpson Group
SNIn Simpson Group. Added to Thesaurus in 1985.
bromide ion  search
BThalogens
 .bromine
 ..bromide ion
RTions
 bromides
SNBefore 1978, search bromide. Added to Thesaurus in 1993.
bromides  search
BThalides
 .bromides
RTbromide ion
SNBefore 1981, also search bromide.
bromine  search
BThalogens
 .bromine
NTbromide ion
UFBr
RTbrines
 bromine deposits
 salt
SNChemical element. Use bromine deposits for bromine as a commodity.
bromine deposits  search
RTbrines
 bromine
 salt
SNCommodity. See List C.
bromlite  search
USEalstonite
Bronson Hill Anticlinorium  search
BTUnited States
 .Bronson Hill Anticlinorium
RTMassachusetts
 New Hampshire
SNIn S New Hampshire and N central Massachusetts. Indexed with states as applicable.
Bronx County New York  search
BTUnited States
 .New York
 ..Bronx County New York
Bronze Age  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Bronze Age
RTHolocene
 archaeology
 Quaternary
SNArchaeological classification. Added to Thesaurus in 1985.
bronzite  search
USEenstatite
bronzitite  search
BTigneous rocks
 .plutonic rocks
 ..ultramafics
 ...bronzitite
RTpyroxenite
Brooke County West Virginia  search
BTUnited States
 .West Virginia
 ..Brooke County West Virginia
Brookings County South Dakota  search
BTUnited States
 .South Dakota
 ..Brookings County South Dakota
brookite  search
BToxides
 .brookite
RTanatase
 rutile
 titanium oxides
Brooks County Georgia  search
BTUnited States
 .Georgia
 ..Brooks County Georgia
Brooks County Texas  search
BTUnited States
 .Texas
 ..Brooks County Texas
Brooks Range  search
BTUnited States
 .Alaska
 ..Northern Alaska
 ...Brooks Range
NTDe Long Mountains
 Endicott Mountains
 Sadlerochit Mountains
SNBetween Yukon River and Arctic Ocean in N central Alaska. At one time, was considered part of Rocky Mountains.
Broom Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Jurassic
 ....Middle Jurassic
 .....Bajocian
 ......Broom Formation
RTAalenian
 Brent Group
 North Sea
SNAt the base of the Brent Group. North Sea region. Added to Thesaurus in 1995.
Broome County New York  search
BTUnited States
 .New York
 ..Broome County New York
NTBinghamton New York
SNS New York.
Brothers fault zone  search
BTUnited States
 .Oregon
 ..Brothers fault zone
RTCascade Range
SNCascade Range, central Oregon. Indexed with counties as applicable. Added to Thesaurus in 1985.
Broward County Florida  search
BTUnited States
 .Florida
 ..Broward County Florida
RTBiscayne Aquifer
SNOn the Atlantic Ocean in S Florida.
brown algae  search
USEPhaeophyta
brown coal  search
SNAs of 1981, no longer a valid term for GeoRef. Use lignite.
Brown County Illinois  search
BTUnited States
 .Illinois
 ..Brown County Illinois
NTVersailles Illinois
SNW Illinois.
Brown County Indiana  search
BTIndiana
 .Brown County Indiana
SNS central Indiana.
Brown County Kansas  search
BTUnited States
 .Kansas
 ..Brown County Kansas
SNNE Kansas.
Brown County Minnesota  search
BTUnited States
 .Minnesota
 ..Brown County Minnesota
NTNew Ulm Minnesota
SNS Minnesota.
Brown County Nebraska  search
BTUnited States
 .Nebraska
 ..Brown County Nebraska
Brown County Ohio  search
BTUnited States
 .Ohio
 ..Brown County Ohio
Brown County South Dakota  search
BTUnited States
 .South Dakota
 ..Brown County South Dakota
Brown County Texas  search
BTUnited States
 .Texas
 ..Brown County Texas
Brown County Wisconsin  search
BTUnited States
 .Wisconsin
 ..Brown County Wisconsin
NTGreen Bay Wisconsin
SNE Wisconsin.
Brown forest soils  search
BTsoils
 .Brown forest soils
RTsoil group
 Intrazonal soils
brown mica  search
USEphlogopite
Brown soils  search
BTsoils
 .Brown soils
RTsoil group
 Zonal soils
Browns Park Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Neogene
 ....Browns Park Formation
RTPliocene
 Miocene
 Utah
 Wyoming
 Colorado
SNMiocene? NE Utah, NW Colorado and S Wyoming. Added to Thesaurus in 1985.
Browse Basin  search
RTIndian Ocean
 Timor Sea
 Western Australia
SNContinental shelf off N Western Australia. Indexed with land or ocean regions as applicable. Added to Thesaurus in 1985.
Bruce County Ontario  search
BTCanada
 .Eastern Canada
 ..Ontario
 ...Bruce County Ontario
Bruce Peninsula  search
BTCanada
 .Eastern Canada
 ..Ontario
 ...Bruce Peninsula
UFSaugeen Peninsula
RTNiagara Escarpment
SNPeninsula of SE Ontario, Canada. Extends N between Lake Huron and Georgian Bay. Added to Thesaurus in 1981.
brucite  search
BToxides
 .brucite
brucite marble  search
BTmetamorphic rocks
 .marbles
 ..brucite marble
Bruderheim Meteorite  search
BTmeteorites
 .stony meteorites
 ..chondrites
 ...L chondrites
 ....Bruderheim Meteorite
RTAlberta
SNOlivine-hypersthene chondrite named for village NE of Edmonton in central Alberta.
Bruederheim  search
SNNot a valid term for GeoRef. See Bruderheim Meteorite.
Brule County South Dakota  search
BTUnited States
 .South Dakota
 ..Brule County South Dakota
Brule Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Oligocene
 .....Brule Formation
RTWyoming
 Colorado
 Nebraska
 South Dakota
 White River Group
 lower Oligocene
 middle Oligocene
SNIn White River Group. Lower and middle Oligocene. Previously considered lower Oligocene. In NE Colorado, W Nebraska, W South Dakota, and E Wyoming. Indexed with lower Oligocene and/or middle Oligocene as applicable.
Brunei  search
BTMalay Archipelago
 .Borneo
 ..Brunei
RTASEAN
 East Malaysia
SNSultanate formerly under British protection which gained independence and joined the Commonwealth in 1984. Found in NE part of Borneo. This term has multiple hierarchies.
Brunhes Chron  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Quaternary
 ....upper Quaternary
 .....Brunhes Chron
UFBrunhes Epoch
 Brunhes Normal
RTpaleomagnetism
 reversals
SNGeochronologic division based on magnetostratigraphic normal polarity unit. Extends to the present. Formerly designated the Brunhes Epoch. Added to Thesaurus in 1998.
Brunhes Epoch  search
USEBrunhes Chron
Brunhes Normal  search
USEBrunhes Chron
Brunswick  search
SNNo longer a valid term for GeoRef. As of 1993, see Brunswick Germany for the city in Lower Saxony, Germany. As of 1989, for the city in Georgia, use Brunswick Georgia.
Brunswick County North Carolina  search
BTUnited States
 .North Carolina
 ..Brunswick County North Carolina
Brunswick County Virginia  search
BTUnited States
 .Virginia
 ..Brunswick County Virginia
SNS Virginia.
Brunswick Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Brunswick Formation
RTUpper Triassic
 Lower Jurassic
 Pennsylvania
 New Jersey
 Newark Supergroup
 Passaic Formation
SNIn Newark Supergroup. New Jersey and SE Pennsylvania. Indexed with ages as applicable. Added to Thesaurus in 1989.
Brunswick Georgia  search
BTUnited States
 .Georgia
 ..Glynn County Georgia
 ...Brunswick Georgia
SNCity in SE Georgia.
Brunswick Germany  search
BTEurope
 .Central Europe
 ..Germany
 ...Lower Saxony Germany
 ....Brunswick Germany
UFBraunschweig Germany
SNCity in Lower Saxony, Germany.
brushite  search
BTphosphates
 .brushite
Brushy Basin Shale Member  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Jurassic
 ....Upper Jurassic
 .....Brushy Basin Shale Member
RTNew Mexico
 Utah
 Colorado
 Arizona
 Morrison Formation
SNMember of Morrison Formation. SE Utah, NE Arizona, SW Colorado and NW New Mexico. Added to Thesaurus in 1985.
Brushy Canyon Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Permian
 ....Guadalupian
 .....Brushy Canyon Formation
RTNew Mexico
 Delaware Mountain Group
 Delaware Basin
 Permian Basin
SNIn the Delaware Mountain Group, Delaware Basin, W Texas and New Mexico. Not to be confused with the Upper Jurassic Brushy Canyon Member, Mariposa Formation of California.
Brussels Belgium  search
BTEurope
 .Western Europe
 ..Belgium
 ...Brabant Belgium
 ....Brussels Belgium
UFBruxelles Belgium
SNCity in central Belgium.
Bruxelles Belgium  search
USEBrussels Belgium
Bryan County Georgia  search
BTUnited States
 .Georgia
 ..Bryan County Georgia
SNSE Georgia.
Bryan County Oklahoma  search
BTUnited States
 .Oklahoma
 ..Bryan County Oklahoma
SNS Oklahoma.
Bryansk Russian Federation  search
BTCommonwealth of Independent States
 .Russian Federation
 ..Bryansk Russian Federation
BTEurope
 .Bryansk Russian Federation
SNCity and oblast SW of Moscow in W Russian Federation. Before 1993, Bryansk Russian Republic was also used. This term has multiple hierarchies.
Bryophyta  search
BTPlantae
 .Bryophyta
NTHepaticae
 Musci
RTthallophytes
 mud mounds
Bryozoa  search
BTInvertebrata
 .Bryozoa
NTCheilostomata
 Cryptostomata
 Ctenostomata
 Cystoporata
 Trepostomata
UFEctoprocta
 Polyzoa
RTacanthopores
 Cyclostomata
 reef builders
SNPhylum.