D  search
D-J Basin  search
USEDenver Basin
D-region  search
SNAs of 1993, no longer a valid term for GeoRef. Usually out-of-scope. Used with ionosphere.
D/H  search
BTisotopes
 .stable isotopes
 ..D/H
BThydrogen
 .D/H
RTisotope ratios
 tracers
 deuterium
SNThis term has multiple hierarchies.
Da  search
Da Hinggan Ling  search
BTAsia
 .Far East
 ..China
 ...Da Hinggan Ling
UFDaxinganling
 Great Khingan Range
 Greater Khingan Mountains
 Khingan Range
RTInner Mongolia China
 Heilongjiang China
SNMountainous system in N Inner Mongolia extending into NW Heilongjiang Province. Before 1993, also search Khingan; Da Hingan Ling. Indexed with provinces as applicable. Added to Thesaurus in 1993.
Da Lat  search
USEDalat Vietnam
Da-ching Field  search
USEDaqing Field
Dabie Mountains  search
BTAsia
 .Far East
 ..China
 ...Dabie Mountains
RTAnhui China
 Henan China
 Hubei China
SNSouth-central China, W Hubei, SE Anhui, SW Henan. Before 1993, also search Dabieshan and Dabie Shan. Added to Thesaurus in 1993.
dac  search
Dachang Deposit  search
BTAsia
 .Far East
 ..China
 ...Guangxi China
 ....Dachang Deposit
RTpolymetallic ores
 gold ores
 antimony ores
 tin ores
SNNandan County, NW Guangxi. Added to Thesaurus in 1993.
Dacht-e-Nawar  search
USEDasht-i-Nawar
Dacian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Neogene
 ....Pliocene
 .....Dacian
SNEurope.
Dacian Basin  search
BTEurope
 .Southern Europe
 ..Romania
 ...Dacian Basin
SNRegion roughly covering modern Romania.
dacite porphyry  search
BTigneous rocks
 .volcanic rocks
 ..dacites
 ...dacite porphyry
RTporphyry
dacites  search
BTigneous rocks
 .volcanic rocks
 ..dacites
NTdacite porphyry
RTdacitic composition
 metadacite
dacitic composition  search
RTcomposition
 dacites
 igneous rocks
SNBefore 1982, also search dacitic. Added to Thesaurus in 1982.
Dacryoconarida  search
BTproblematic fossils
 .Dacryoconarida
RTMollusca
SNOrder.
Dactylioceratidae  search
BTInvertebrata
 .Mollusca
 ..Cephalopoda
 ...Tetrabranchiata
 ....Ammonoidea
 .....Dactylioceratidae
Dade County Florida  search
BTUnited States
 .Florida
 ..Dade County Florida
NTBiscayne Bay
 Miami Florida
RTFlorida Keys
 Biscayne Aquifer
SNS Florida.
Dade County Georgia  search
BTUnited States
 .Georgia
 ..Dade County Georgia
SNExtreme NW Georgia.
Dade County Missouri  search
BTUnited States
 .Missouri
 ..Dade County Missouri
SNSW Missouri.
Dadoxylon  search
BTPlantae
 .Spermatophyta
 ..Gymnospermae
 ...Dadoxylon
RTConiferales
 Cordaitales
 Ginkgoales
 Glossopteris
SNGenus.
Dagestan Russian Federation  search
BTCommonwealth of Independent States
 .Russian Federation
 ..Dagestan Russian Federation
BTEurope
 .Dagestan Russian Federation
NTMakhachkala Russian Federation
UFDaghestan Russian Federation
RTNorthern Caucasus
SNFormer Autonomous Soviet Socialist Republic on W shore of Caspian Sea. Before 1993, Dagestan Russian Republic was also used. This term has multiple hierarchies.
Daggett County Utah  search
BTUnited States
 .Utah
 ..Daggett County Utah
SNNE Utah.
Daghestan Russian Federation  search
USEDagestan Russian Federation
dahllite  search
BTcarbonates
 .dahllite
BTphosphates
 .dahllite
RTcarbonate apatite
SNThis term has multiple hierarchies.
Dahomey  search
USEBenin
Daiichi-Kashima Seamount  search
USEKashima Seamount
Daiiti-Kashima Seamount  search
USEKashima Seamount
daily variation  search
USEdiurnal variations
Daito Ridge  search
BTPacific Ocean
 .North Pacific
 ..Northwest Pacific
 ...Philippine Sea
 ....Daito Ridge
RTDSDP Site 445
SNNW Philippine Sea. This term has multiple hierarchies. Added to Thesaurus in 1981.
Dakar Senegal  search
BTAfrica
 .West Africa
 ..Senegal
 ...Dakar Senegal
SNCity on the Atlantic Ocean.
Dakhla Oasis  search
BTAfrica
 .North Africa
 ..Egypt
 ...Dakhla Oasis
RTWestern Desert
SNOasis in Western Desert of central Egypt. Added to Thesaurus in 1989.
Dakhla Shale  search
RTEgypt
 lower Tertiary
 Upper Cretaceous
SNUpper Cretaceous to lower Tertiary. Indexed with ages as applicable. Added to Thesaurus in 1989.
Dakota Aquifer  search
BTNorth America
 .Dakota Aquifer
RTUnited States
 Western Interior
SNCovers a large area in the Western Interior from Kansas to parts of Canada.
Dakota County Minnesota  search
BTUnited States
 .Minnesota
 ..Dakota County Minnesota
Dakota County Nebraska  search
BTUnited States
 .Nebraska
 ..Dakota County Nebraska
Dakota Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Dakota Formation
RTNew Mexico
 Wyoming
 Montana
 Oklahoma
 Colorado
 Nebraska
 North Dakota
 Minnesota
 Kansas
 South Dakota
 Moxa Arch
 Mesa Rica Sandstone
SNE Colorado, NE New Mexico, North Dakota, Kansas, Minnesota, SE Montana, Nebraska, South Dakota, W Oklahoma, E Wyoming.
Dalarna  search
BTEurope
 .Western Europe
 ..Scandinavia
 ...Sweden
 ....Dalarna
UFDalarne
 Dalecarlia
SNRegion in W central Sweden.
Dalarne  search
USEDalarna
Dalat Vietnam  search
BTAsia
 .Far East
 ..Vietnam
 ...Dalat Vietnam
UFDa Lat
SNTown NE of Saigon (Ho Chi Minh City), S Vietnam.
Dale County Alabama  search
BTUnited States
 .Alabama
 ..Dale County Alabama
Dalecarlia  search
USEDalarna
Dalgaranga  search
BTAustralasia
 .Australia
 ..Western Australia
 ...Dalgaranga
RTimpact features
 mesosiderite
SNRegion. West-central Western Australia. Also mesosiderite meteorite and meteor crater. As of 1993, use Dalgaranga Australia for the town. Use Dalgaranga Meteorite for the meteorite.
dalgo County Texas  search
NTMcAllen Ranch Field
dalgo Mexico  search
NTPachuca Mexico
Dalhart Basin  search
BTUnited States
 .Texas
 ..Dalhart Basin
SNTexas Panhandle. Added to Thesaurus in 1985.
Dallam County Texas  search
BTUnited States
 .Texas
 ..Dallam County Texas
Dallas County Alabama  search
BTUnited States
 .Alabama
 ..Dallas County Alabama
SNS central Alabama.
Dallas County Arkansas  search
BTUnited States
 .Arkansas
 ..Dallas County Arkansas
SNS central Arkansas.
Dallas County Iowa  search
BTUnited States
 .Iowa
 ..Dallas County Iowa
SNCentral Iowa.
Dallas County Missouri  search
BTUnited States
 .Missouri
 ..Dallas County Missouri
SNSW central Missouri.
Dallas County Texas  search
BTUnited States
 .Texas
 ..Dallas County Texas
NTDallas Texas
SNN Texas.
Dallas Texas  search
BTUnited States
 .Texas
 ..Dallas County Texas
 ...Dallas Texas
SNCity in NE central Texas.
Dalmatia  search
BTEurope
 .Southern Europe
 ..Dalmatia
RTCroatia
 Montenegro
 Yugoslavia
 Adriatic Sea
 Mediterranean region
 Bosnia-Herzegovina
 Karst region
 Split Croatia
SNRegion, including many islands, which extends along the Adriatic Sea from Zadar on the N to near the Albanian border on the S. Sometimes the name is applied to most of the Croatian coast. Also index republics or regions as applicable.
Dalradian  search
UFDalradian Supergroup
RTPrecambrian
 Cambrian
 Silurian
 Devonian
 Scotland
 Ballachulish Complex
 Ireland
SNIreland and Scotland. Indexed with ages as applicable.
Dalradian Supergroup  search
USEDalradian
Dalslandian Orogeny  search
USESveconorwegian Orogeny
dam sites  search
USEdams
damage  search
RTcatastrophes
 corrosion
 destruction
 earthquakes
 effects
 engineering geology
 fires
 formation damage
 geochemistry
 geologic hazards
 landslides
SNUsed for damage resulting from natural phenomena. Also see degradation. Added to Thesaurus in 1981.
damage, radiation  search
USEradiation damage
Damara Orogeny  search
RTlower Paleozoic
 Namibia
 Neoproterozoic
 orogeny
 South Africa
 Southern Africa
 tectonics
SNNeoproterozoic to lower Paleozoic. Southern Africa. Indexed with age or ages as applicable. Added to Thesaurus in 1993.
Damara System  search
BTChronostratigraphic Units
 .Precambrian
 ..Proterozoic
 ...Damara System
RTNamibia
SNIncludes Khomas Series, Marble Series, and Quartzite Series, Chuos Tillite, and Otavi Series. In W Damaraland region. NW of Walvis Bay.
Damascus Syria  search
BTAsia
 .Middle East
 ..Syria
 ...Damascus Syria
SNCity in SW Syria.
Damkohler number  search
USEReynolds number
Damodar Valley  search
BTAsia
 .Indian Peninsula
 ..India
 ...Damodar Valley
RTBihar India
 West Bengal India
SNRiver valley. Indexed with states as applicable.
Dampier Ridge  search
BTPacific Ocean
 .South Pacific
 ..Southwest Pacific
 ...Tasman Sea
 ....Dampier Ridge
SNNE of Sidney in N Tasman Sea. This term has multiple hierarchies.
damping  search
USEattenuation
dams  search
NTarch dams
 concrete dams
 gravity dams
 natural dams
 rockfill dams
 tailings dams
UFdam sites
 damsites
RTland subsidence
 abutments
 embankments
 slope stability
 seismic response
 engineering geology
 rock mechanics
 reservoirs
 design
 construction
 foundations
 riprap
 geomembranes
 geotextiles
 ground-water dams
 grouting
 reinforced materials
 site exploration
 soil mech
damsites  search
USEdams
Damuda Series  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Permian
 ....Damuda Series
RTIndia
 Bihar India
 Madhya Pradesh India
 Barakar Stage
 Karharbari Stage
 Raniganj Formation
SNForms middle part of lower Gondwanas. Subdivided into three stages: Raniganj (series), Ironstone shales, and lower Damudas, afterwards called Barakars.
Dan River basin  search
BTUnited States
 .Dan River basin
RTVirginia
 North Carolina
SNIndexed with states as applicable.
Danakil  search
USEAfar
Danakil Depression  search
danburite  search
BTsilicates
 .framework silicates
 ..danburite
Dane County Wisconsin  search
BTUnited States
 .Wisconsin
 ..Dane County Wisconsin
NTLake Mendota
 Madison Wisconsin
SNS Wisconsin.
Dangerous Islands  search
USETuamotu Islands
Danian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Paleocene
 .....Danian
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Paleocene
 .....lower Paleocene
 ......Danian
NTNiniyur Group
RTRoca Formation
 Ekofisk Formation
SNEurope. Above Maestrichtian (Cretaceous), below Montian.
Daniel's Harbour Newfoundland  search
BTCanada
 .Eastern Canada
 ..Newfoundland
 ...Newfoundland Island
 ....Daniel's Harbour Newfoundland
SNVillage on upper Gulf of Saint Lawrence in NW Newfoundland.
Daniels County Montana  search
BTUnited States
 .Montana
 ..Daniels County Montana
Dankalia  search
USEAfar
Danube Delta  search
BTEurope
 .Danube Delta
UFDanube River delta
RTRomania
 Ukraine
SNOn the Black Sea primarily in Romania. Indexed with Romania and/or Ukraine as applicable.
Danube Plain  search
BTEurope
 .Southern Europe
 ..Danube Plain
RTRomania
 Bulgaria
 Walachia
SNCovers the Walachian Plain and the N Bulgaria lowlands. Also search Danube. Indexed with countries as applicable.
Danube River  search
BTEurope
 .Danube River
UFDonau River
 Duna River
 Dunai River
 Dunarea River
 Dunau River
RTYugoslavia
 Serbia
 Austria
 Germany
 Romania
 Ukraine
 Bulgaria
 Hungary
 Slovakia
 Kostolac
SNFlows E from the Black Forest and turns S just N of Budapest. It then flows S, SE, N, and finally E into the Black Sea. Also search Danube. Indexed with countries as applicable.
Danube River delta  search
USEDanube Delta
Danube Stade  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Quarternary
 ....Pleistocene
 .....Lower Pleistocene
 ......Danube Stade
UFDanube Stage
SNAdded to Thesaurus in 1982.
Danube Stage  search
USEDanube Stade
Danube Valley  search
BTEurope
 .Danube Valley
RTYugoslavia
 Serbia
 Austria
 Germany
 Romania
 Ukraine
 Bulgaria
 Hungary
 Slovakia
 Kostolac
SNRiver valley. Also search Danube. Indexed with countries as applicable.
Danville Virginia  search
BTUnited States
 .Virginia
 ..Danville Virginia
RTPittsylvania County Virginia
SNCity on the North Carolina border in S Virginia. Indexed with Pittsylvania County Virginia for adjacent areas if applicable.
Danzig Poland  search
USEGdansk Poland
Daonella  search
BTInvertebrata
 .Mollusca
 ..Bivalvia
 ...Pteriina
 ....Pectinacea
 .....Daonella
Daqing Field  search
BTilongjiang China
 .Daqing Field
UFDa-ching Field
RToil and gas fields
SNOil field, Heilongjiang, NE China. Added to Thesaurus in 1985.
Darasun Russian Federation  search
BTCommonwealth of Independent States
 .Russian Federation
 ..Chita Russian Federation
 ...Darasun Russian Federation
SNTown in S central Chita Oblast, N of Mongolia. Before 1993, Darasun Russian Republic was also used. This term has multiple hierarchies.
Darcy's law  search
RTaquifers
 fluid phase
 gases
 Green-Ampt model
 ground water
 hydraulic head
 hydrodynamics
 permeability
 petroleum
 porosity
 reservoir properties
Dare County North Carolina  search
BTUnited States
 .North Carolina
 ..Dare County North Carolina
NTCape Hatteras
 Duck North Carolina
SNNE North Carolina.
Darfur  search
BTAfrica
 .East Africa
 ..Sudan
 ...Darfur
UFDarfur Sudan
SNRegion in W Sudan. A large former province.
Darfur Sudan  search
USEDarfur
Darien  search
BTCentral America
 .Panama
 ..Darien
SNE part of isthmus between Gulf of Darien on E and Gulf of San Miguel on W.
Darjeeling India  search
BTAsia
 .Indian Peninsula
 ..India
 ...West Bengal India
 ....Darjeeling India
UFDarjiling India
SNTown, hill station, and district near Sikkim border in extreme N West Bengal, E India.
Darjiling India  search
USEDarjeeling India
Darke County Ohio  search
BTUnited States
 .Ohio
 ..Darke County Ohio
Darling Downs  search
BTAustralasia
 .Australia
 ..Queensland Australia
 ...Darling Downs
SNTableland in SE Queensland.
Darling Range  search
BTAustralasia
 .Australia
 ..Western Australia
 ...Darling Range
SNIn SW Western Australia.
Darlington County South Carolina  search
BTUnited States
 .South Carolina
 ..Darlington County South Carolina
Darmstadt Germany  search
BTsse Germany
 .Darmstadt Germany
SNCity in S Hesse.
Darriwilian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Ordovician
 ....Middle Ordovician
 .....Darriwilian
Dartmoor  search
BTEurope
 .Western Europe
 ..United Kingdom
 ...Great Britain
 ....England
 .....Devonshire England
 ......Dartmoor
SNTableland in Devonshire, SW England.
Darvaz  search
BTAsia
 .Tajikistan
 ..Darvaz
BTAsia
 .Central Asia
 ..Pamirs
 ...Darvaz
UFKaganovich Peak
SNPeak in the W Pamirs in central Tajikistan. This term has multiple hierarchies.
Darvaza Range  search
BTAsia
 .Tajikistan
 ..Darvaza Range
RTPamirs
 Alai Range
SNBranch of Alai Range N of Afghanistan in S central Tajikistan. This term has multiple hierarchies. Indexed with mountains as applicable.
Darvaza Turkmenia  search
BTAsia
 .Turkmenia
 ..Ashkhabad Turkmenia
 ...Darvaza Turkmenia
SNTown in Ashkhabad Oblast in S Turkmenia. This term has multiple hierarchies.
Darvel Bay  search
BTAsia
 .Far East
 ..Malaysia
 ...East Malaysia
 ....Sabah Malaysia
 .....Darvel Bay
RTCelebes Sea
SNInlet of Celebes Sea in Sabah in East Malaysia. This term has multiple hierarchies.
Darwin glass  search
BTtektites
 .Darwin glass
UFqueenstownite
RTglasses
 impactite
Darwin, Charles  search
UFCharles Darwin
RTbiography
 Darwinism
SNAdded to Thesaurus in 1985.
Darwinism  search
RTbiologic evolution
 Darwin, Charles
 life origin
 natural selection
 paleoecology
 paleontology
SNTheory on origin of species; evolution is the result of variation and survival of the fittest by natural selection. Added to Thesaurus in 1989.
Darwinula  search
BTInvertebrata
 .Arthropoda
 ..Mandibulata
 ...Crustacea
 ....Ostracoda
 .....Podocopida
 ......Darwinula
RTmicrofossils
SNIndexed with microfossils if applicable.
Dashkesan Azerbaijan  search
BTEurope
 .Azerbaijan
 ..Dashkesan Azerbaijan
SNCity in W Azerbaijan. This term has multiple hierarchies.
Dasht-e Bayaz  search
USEDasht-e-Bayaz
Dasht-e-Bayaz  search
BTAsia
 .Middle East
 ..Iran
 ...Dasht-e-Bayaz
UFDasht-e Bayaz
RTearthquakes
SNRegion in NE part of country. Locale of earthquake in 1968.
Dasht-e-Lut Basin  search
USELut Desert
Dasht-e-Nawar  search
USEDasht-i-Nawar
Dasht-i-Lut  search
USELut Desert
Dasht-i-Nawar  search
BTAsia
 .Indian Peninsula
 ..Afghanistan
 ...Dasht-i-Nawar
UFDacht-e-Nawar
 Dasht-e-Nawar
SNVolcanic region in central Afghanistan.
Dastakert Armenia  search
BTEurope
 .Armenia
 ..Dastakert Armenia
SNVillage in S Armenia. This term has multiple hierarchies.
Dasycladaceae  search
BTPlantae
 .algae
 ..Chlorophyta
 ...Chlorophyceae
 ....Dasycladaceae
RTmicrofossils
SNIndexed with microfossils if applicable.
data  search
RTdata acquisition
 data bases
 data processing
 data retrieval
 DTA data
 electron microscopy data
 electron probe data
 ion probe data
 mineral data
 neutron activation analysis data
 neutron diffraction data
 neutron probe data
 new data
 SEM data
 SHRIMP data
 spatial
SNUsed as a general term. Before 1975 also search analytical data.
data acquisition  search
UFacquisition, data
RTdata processing
 data storage
 data
data bases  search
UFdata systems
 databases
RTdata processing
 geographic information systems
 information systems
 GeoRef
 Geoscan
 CD-ROM
 data retrieval
 data storage
 Pascal
 information management
 CRIB
 data
 data handling
 data management
 digital data
 National Coal Resources Data System
 NAWDEX
 NWIS-II
 regi
SNAlso index spatial data and/or digital data if applicable.
data ha  search
data handling  search
UFhandling, data
RTdata processing
 information systems
 data bases
 data retrieval
 spreadsheets
 parallel processing
 data management
 digital data
 digitization
 Internet
 World Wide Web
data management  search
BTinformation management
 .data management
RTdata processing
 data bases
 data handling
 digital data
 spatial data
SNAlso search data processing AND management if applicable. Added to Thesaurus in 1998.
data processing  search
NTparallel processing
UFautomatic data processing
 computer methods
 computer processing
 electronic data processing
RTalgorithms
 computer programs
 analog simulation
 automated analysis
 Bayesian analysis
 ARC/INFO
 computer networks
 artificial intelligence
 BASIC
 computer languages
 CAD
 CD-ROM
 data bases
 cokriging
 computer animation
 computers
 CRIB
 data
 data acquisition
 data ha
SNReplaces automatic data processing. Used for computer applications and machine modelling of geological data.
data retrieval  search
UFretrieval, data
RTdata processing
 information systems
 computer networks
 CD-ROM
 data bases
 data storage
 parallel processing
 data
 data handling
 digital data
 Internet
 World Wide Web
data storage  search
RTCD-ROM
 data acquisition
 data bases
 data processing
 data retrieval
 information systems
 parallel processing
 spreadsheets
 storage
data systems  search
USEdata bases
databases  search
USEdata bases
Date Creek basin  search
BTUnited States
 .Arizona
 ..Date Creek basin
RTLa Paz County Arizona
 Yuma County Arizona
 Yavapai County Arizona
SNW central Arizona. Indexed with counties as applicable. Added to Thesaurus in 1985.
dates  search
RTabsolute age
 geochronology
SNUsed only to indicate specific absolute age dates.
Datil-Mogollon volcanic field  search
BTUnited States
 .New Mexico
 ..Datil-Mogollon volcanic field
UFMogollon-Datil volcanic field
RTMogollon Mountains
SNSW New Mexico. Added to Thesaurus in 1981.
dating, fission-track  search
USEfission-track dating
dating, particle-track  search
USEparticle-track dating
datolite  search
BTsilicates
 .orthosilicates
 ..nesosilicates
 ...datolite
Dauphin County Pennsylvania  search
BTUnited States
 .Pennsylvania
 ..Dauphin County Pennsylvania
NTHarrisburg Pennsylvania
SNS central Pennsylvania.
Dauphine  search
BTEurope
 .Western Europe
 ..France
 ...Dauphine
RTBas-Dauphine
 Devoluy
SNHistorical region and former province in SE France.
Dauphine Alps  search
BTEurope
 .Western Europe
 ..France
 ...Dauphine Alps
BTEurope
 .Alps
 ..Western Alps
 ...Dauphine Alps
NTBelledonne Massif
 Pelvoux Massif
 Vercors
RTBas-Dauphine
 Cottian Alps
 Devoluy
SNW offshoot of Cottian Alps in SE France. This term has multiple hierarchies.
Davenport Iowa  search
BTUnited States
 .Iowa
 ..Scott County Iowa
 ...Davenport Iowa
SNCity on the Mississippi River in E Iowa.
Davidson County North Carolina  search
BTUnited States
 .North Carolina
 ..Davidson County North Carolina
SNCentral North Carolina.
Davidson County Tennessee  search
BTUnited States
 .Tennessee
 ..Davidson County Tennessee
NTNashville Tennessee
SNN central Tennessee.
Davidson North Carolina  search
BTUnited States
 .North Carolina
 ..Mecklenburg County North Carolina
 ...Davidson North Carolina
SNTown on the South Carolina border in S North Carolina.
Davidsville Gr  search
Davidsville Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Ordovician
 ....Davidsville Group
RTCanada
 Newfoundland Island
SNIn NE Newfoundland.
Davie County North Carolina  search
BTUnited States
 .North Carolina
 ..Davie County North Carolina
Daviess County Indiana  search
BTIndiana
 .Daviess County Indiana
Daviess County Kentucky  search
BTUnited States
 .Kentucky
 ..Daviess County Kentucky
Daviess County Missouri  search
BTUnited States
 .Missouri
 ..Daviess County Missouri
Davis County Iowa  search
BTUnited States
 .Iowa
 ..Davis County Iowa
SNSE Iowa.
Davis County Utah  search
BTUnited States
 .Utah
 ..Davis County Utah
RTGreat Salt Lake
 Jordan River
 Jordan Valley
SNN Utah.
Davis Formation  search
RTArkansas
 Indiana
 Iowa
 Kansas
 Louisiana
 Missouri
 Oklahoma
 Upper Cambrian
 Upper Jurassic
SNUpper Cambrian of Arkansas, Indiana, Iowa, Kansas, Missouri, Oklahoma. May also occur as Upper Jurassic in Louisiana or Oklahoma. Search in combination with age or area. Indexed with age as applicable. Added to Thesaurus in 1995.
Davis Mountains  search
BTUnited States
 .Texas
 ..Davis Mountains
RTBrewster County Texas
 Jeff Davis County Texas
 Reeves County Texas
 West Texas
SNCentered in Jeff Davis County in W Texas. Indexed with counties as applicable.
Davis Strait  search
RTArctic Ocean
 Atlantic Ocean
 Baffin Bay
 Disko Island
 Godthaabsfjord
 Kangerdlugssuaq
 Labrador Current
 Narpaing Fjord
 North Atlantic
 Sondre Strom Fjord
SNBetween SW Greenland and Baffin Island. Indexed with Arctic Ocean and/or North Atlantic as applicable.
Davison County South Dakota  search
BTUnited States
 .South Dakota
 ..Davison County South Dakota
Davos Switzerland  search
BTEurope
 .Central Europe
 ..Switzerland
 ...Graubunden Switzerland
 ....Davos Switzerland
SNTown consisting of Davos Platz and Davos Dorf in N central Graubunden.
Dawes County Nebraska  search
BTUnited States
 .Nebraska
 ..Dawes County Nebraska
Dawson County Georgia  search
BTUnited States
 .Georgia
 ..Dawson County Georgia
SNN Georgia.
Dawson County Montana  search
BTUnited States
 .Montana
 ..Dawson County Montana
Dawson County Nebraska  search
BTUnited States
 .Nebraska
 ..Dawson County Nebraska
SNS central Nebraska.
Dawson County Texas  search
BTUnited States
 .Texas
 ..Dawson County Texas
SNNW Texas.
Dawson Yukon Territory  search
BTCanada
 .Western Canada
 ..Yukon Territory
 ...Dawson Yukon Territory
SNCity in W central Yukon Territory.
dawsonite  search
BTcarbonates
 .dawsonite
Daxinganling  search
USEDa Hinggan Ling
Day County South Dakota  search
BTUnited States
 .South Dakota
 ..Day County South Dakota
DCB method (soils)  search
USEcitrate-bicarbonate-dithionite method
DDT  search
BTpesticides
 .DDT
BTorganic compounds
 .halogenated hydrocarbons
 ..chlorinated hydrocarbons
 ...DDT
UFchlorophenothane
 dichloro-diphenyl-trichloro-ethane
 dicophane
 methoxychlor
RTenvironmental geology
 agrochemicals
 waste disposal
 ethane
 trichloroethane
SNAbbreviation used for the pesticide 1, 1, 1-trichloro-2, 2-bis(p-chlorophenyl) ethane and related compounds. This term has multiple hierarchies. Added to Thesaurus in 1989.
De Baca County New Mexico  search
BTUnited States
 .New Mexico
 ..De Baca County New Mexico
SNE New Mexico.
De Kalb County Alabama  search
BTUnited States
 .Alabama
 ..De Kalb County Alabama
SNNE Alabama.
De Kalb County Georgia  search
BTUnited States
 .Georgia
 ..De Kalb County Georgia
RTStone Mountain
SNNW central Georgia.
De Kalb County Illinois  search
BTUnited States
 .Illinois
 ..De Kalb County Illinois
SNN Illinois.
De Kalb County Indiana  search
BTIndiana
 .De Kalb County Indiana
SNNE Indiana.
De Kalb County Missouri  search
BTUnited States
 .Missouri
 ..De Kalb County Missouri
SNNW Missouri.
De Kalb County Tennessee  search
BTUnited States
 .Tennessee
 ..De Kalb County Tennessee
SNCentral Tennessee.
De Long Mountains  search
BTUnited States
 .Alaska
 ..Northern Alaska
 ...Brooks Range
 ....De Long Mountains
UFDeLong Mountains
SNNW Alaska. W part of the Brooks Range. Added to Thesaurus in 1985.
De Soto County Florida  search
BTUnited States
 .Florida
 ..De Soto County Florida
SNS central Florida.
De Soto County Mississippi  search
BTUnited States
 .Mississippi
 ..De Soto County Mississippi
SNExtreme NW Mississippi.
De Soto Parish Louisiana  search
BTUnited States
 .Louisiana
 ..De Soto Parish Louisiana
De Twente  search
USETwente
De Witt County Illinois  search
BTUnited States
 .Illinois
 ..De Witt County Illinois
De Witt County Texas  search
BTUnited States
 .Texas
 ..De Witt County Texas
de#greenschist facies#high pressure#high temperature#igneous rocks#intrusions#is  search
Dead Sea  search
BTAsia
 .Middle East
 ..Dead Sea
RTIsrael
 Jordan
 Dead Sea Rift
 Great Rift Valley
SNA salt lake lying in part of the Great Rift Valley and constituting the lowest point on the Earth's surface. Also search Dead Sea Rift. Indexed with countries as applicable.
Dead Sea Rift  search
BTAsia
 .Middle East
 ..Dead Sea Rift
RTRed Sea Rift
 Israel
 Jordan
 Dead Sea
 Great Rift Valley
Deadwood Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Deadwood Formation
RTLower Ordovician
 Wyoming
 Montana
 Upper Cambrian
 South Dakota
SNUpper Cambrian and Lower Ordovician. In N Black Hills, conformably underlies Aladdin Sandstone. SE Montana, W South Dakota (Black Hills), and E Wyoming. Indexed with ages as applicable.
Deaf Smith County Texas  search
BTUnited States
 .Texas
 ..Deaf Smith County Texas
SNExtreme N Texas.
Dearborn County Indiana  search
BTIndiana
 .Dearborn County Indiana
death assemblages  search
USEthanatocenoses
Death Valley  search
BTUnited States
 .California
 ..Death Valley
RTNevada
 San Bernardino County California
 national monuments
 Nye County Nevada
 Inyo County California
 Death Valley Fault
 Esmeralda County Nevada
 Furnace Creek
SNValley in San Bernardino and Inyo counties, California. If applicable, also index/search Death Valley National Monument which includes a larger area extending into Nevada. Indexed with counties as applicable.
Death Valley Fault  search
BTUnited States
 .California
 ..Death Valley Fault
RTDeath Valley
SNS California. Indexed with counties as applicable. Added to Thesaurus in 1989.
Debrecen Hungary  search
BTngary
 .Debrecen Hungary
SNCity in E Hungary.
debris  search
RTdebris avalanches
 debris cones
 debris flows
 detritus
 geomorphology
 Heinrich events
 regolith
debris avalanches  search
BTmass movements
 .debris avalanches
RTslope stability
 avalanches
 geomorphology
 debris
 debris flows
SNAdded to Thesaurus in 1989.
debris cones  search
RTablation
 alluvial fans
 cones
 debris
 debris flows
 fluvial features
 geomorphology
 glacial features
 glacial geology
 glaciers
 landslides
SNAdded to Thesaurus in 1982.
debris flows  search
BTmass movements
 .debris flows
RTdebris cones
 slope stability
 geomorphology
 flows
 debris avalanches
 debris
debris slopes  search
USEtalus slopes
Decade of North American Geology  search
USEDNAG
Decapoda  search
USEMalacostraca
decarbonation  search
RTcarbon dioxide
 carbonates
 chemical reactions
 processes
SNRemoval of carbon dioxide or carbonic acid.
Decatur County Georgia  search
BTUnited States
 .Georgia
 ..Decatur County Georgia
SNSW Georgia.
Decatur County Indiana  search
BTIndiana
 .Decatur County Indiana
SNSE central Indiana.
Decatur County Iowa  search
BTUnited States
 .Iowa
 ..Decatur County Iowa
SNS Iowa.
Decatur County Kansas  search
BTUnited States
 .Kansas
 ..Decatur County Kansas
RTLeoville Meteorite
SNNW Kansas.
Decatur County Tennessee  search
BTUnited States
 .Tennessee
 ..Decatur County Tennessee
SNW Tennessee.
Decaturville Missouri  search
BTUnited States
 .Missouri
 ..Camden County Missouri
 ...Decaturville Missouri
RTimpact features
SNVillage in central Missouri.
decay, radioactive  search
USEradioactive decay
Decazeville France  search
BTEurope
 .Western Europe
 ..France
 ...Aveyron France
 ....Decazeville France
SNTown in S central France.
Deccan Intertrappean  search
USEIntertrappean Beds
Deccan Intertrappean Beds  search
USEIntertrappean Beds
Deccan Intertrappean Series  search
USEIntertrappean Beds
Deccan Plateau  search
BTAsia
 .Indian Peninsula
 ..India
 ...Deccan Plateau
UFDekkan Plateau
RTAndhra Pradesh India
 Karnataka India
 Madhya Pradesh India
 Orissa India
 Maharashtra India
 Indian Shield
 Lonar Crater
SNTriangular tableland between the Eastern and Western Ghats and between the Narmada River on the N and the Krishna River on the S. Also search Deccan. Indexed with states as applicable.
Deccan Traps  search
RTIndia
 Intertrappean Beds
 K-T boundary
 lower Eocene
 Upper Cretaceous
SNUpper Cretaceous to lower Eocene. Named after the step-like aspect of the flat topped hills of the Deccan Plateau. Indexed with ages as applicable.
Deception Island  search
BTAntarctica
 .South Shetland Islands
 ..Deception Island
SNOne of Britain's South Shetland Islands off N Antarctic Peninsula. This term has multiple hierarchies.
Dechenellidae  search
BTInvertebrata
 .Arthropoda
 ..Trilobitomorpha
 ...Trilobita
 ....Ptychopariida
 .....Dechenellidae
dechlorination  search
RTbiodegradation
 bioremediation
 chlorinated hydrocarbons
 chlorine
 decontamination
 geochemistry
 hydrochemistry
 metabolites
 pollution
 purification
 water treatment
SNMay be used in detoxification usually with H>+` or OH>-` ions.
decision-making  search
RTland management
 legislation
 policy
 public policy
 regulations
 risk assessment
SNAdded to Thesaurus in 1981.
declination  search
SNAs of 1981, no longer a valid term for GeoRef. Use magnetic declination.
decollement  search
UFdetachment
RTtectonics
 accommodation zones
 faults
 deformation
 folds
 boundary faults
 duplexes
 mechanics
 disharmonic folds
 flexural-slip
 triangle zones
decompaction  search
RTbasin analysis
 compaction
 decompression
 density
 models
 porosity
 pressure
 processes
 reconstruction
 reservoir properties
 sedimentology
 soil mechanics
 tectonics
decomposition  search
SNAfter 1993, see types of weathering, e.g. chemical weathering, physical weathering, or degradation or alteration.
decompression  search
RTcompression
 decompaction
 geologic barometry
 pressure
 retrograde metamorphism
 tectonics
SNAdded to Thesaurus in 1995.
decontamination  search
RTbioreclamation
 dechlorination
 desalinization
 dilution
 drinking water
 ground water
 impurities
 polluted water
 pollution
 potability
 purification
 reclamation
 surface water
 waste water
 water
 water management
 water quality
 water resources
 water treatment
SNAdded to Thesaurus in 1982.
deconvolution  search
RTdistortion
 elastic waves
 filters
 Kalman filters
 seismology
 wavelets
Decorah Shale  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Ordovician
 ....Middle Ordovician
 .....Decorah Shale
RTIowa
 Missouri
 Illinois
 Wisconsin
 Minnesota
 Millbrig Bentonite Bed
SNW Illinois, NE Iowa, S Minnesota, N Missouri and SW Wisconsin. Added to Thesaurus in 1989.
decrepitation  search
RTchemical analysis
 geologic thermometry
 mineralogy
 sample preparation
Dedham  search
Dedham Granodiorite  search
BTChronostratigraphic Units
 .Precambrian
 ..Proterozoic
 ...Dedham Granodiorite
RTMassachusetts
 New Hampshire
SNE Massachusetts and SE New Hampshire. Added to Thesaurus in 1989.
dedolomitization  search
RTcalcitization
 diagenesis
 dolomitization
 processes
deep aquifers  search
BTaquifers
 .deep aquifers
RTground water
 recharge
 confined aquifers
 permeability
 hydrodynamics
 hydraulic conductivity
 fossil waters
 depth
 shallow aquifers
deep drilling  search
BTdrilling
 .deep drilling
RTengineering geology
 KTB
 boreholes
 Echassieres Borehole
 Gravberg Well
 Kola Russian Federation
 Sancerre-Couy Borehole
SNAdded to Thesaurus in 1989.
deep earthquakes  search
USEdeep-focus earthquakes
deep faults  search
USEdeep-seated structures
deep focus  search
SNA valid term through 1977. After 1977, use deep-focus earthquakes.
deep magnetic sounding  search
RTdeep sounding
 geophysical methods
 geophysical surveys
 magnetic methods
 sounding
SNAdded to Thesaurus in 1981.
Deep Sea Dr  search
Deep Sea Drilling Project  search
NTIPOD
 Leg 1
 Leg 10
 Leg 11
 Leg 12
 Leg 13
 Leg 14
 Leg 15
 Leg 16
 Leg 17
 Leg 18
 Leg 19
 Leg 2
 Leg 20
 Leg 21
 Leg 22
 Leg 23
 Leg 24
 Leg 25
 Leg 26
 Leg 27
 Leg 28
 Leg 29
 Leg 3
 Leg 30
 Leg 31
 Leg 32
 Leg 33
 Leg 34
 Leg 35
 Leg 36
 Leg 37
 Leg 38
 Leg 39
 Leg 4
 Leg 40
 Leg 41
 Leg 42A
 Leg 42B
 Leg 43
 Leg 44
 Leg 5
 Leg 6
 Leg 7
 Leg 8
 Leg 9
UFDSDP
RTocean basins
 ocean floors
 oceanography
 marine geology
 research vessels
 Glomar Challenger
 JOIDES
 Ocean Drilling Program
SNSee IPOD or Ocean Drilling Program for listings of additional legs and sites.
deep seismic sounding  search
UFDSS
 seismic sounding
RTseismology
 geophysical methods
 geophysical surveys
 geophysics
 seismic methods
 BIRPS
 explosions
 deep sounding
 sounding
 ECORS
deep sounding  search
RTdeep magnetic sounding
 deep seismic sounding
 echo sounding
 electrical sounding
 frequency sounding
 geophysical methods
 sounding
deep structure  search
USEdeep-seated structures
deep-focus earthquakes  search
BTearthquakes
 .deep-focus earthquakes
UFdeep earthquakes
RTfocus
 shallow-focus earthquakes
 intermediate-focus earthquakes
SNBefore 1978, search earthquakes AND deep focus.
deep-sea  search
SNA valid term through 1977. After 1977, use deep-sea environment or (as of 1981) deep-sea sedimentation.
deep-sea environment  search
BTmarine environment
 .deep-sea environment
UFabyssal environment
RTsedimentation
 abyssal hills
 bottom features
 depositional environment
 deep-water environment
 hemipelagic environment
 deep-sea sedimentation
SNBefore 1978, search deep-sea or deep sea.
deep-sea fans  search
USEsubmarine fans
deep-sea sedimentation  search
BTsedimentation
 .deep-sea sedimentation
RTdeep-sea environment
SNAdded to Thesaurus in 1981.
deep-sea sediments  search
SNUsed in subfile N. See marine sediments; deep-sea sedimentation.
deep-seated structures  search
UFdeep faults
 deep structure
RTtectonics
 blind faults
SNBefore 1978, search deep-seated.
deep-tow methods  search
RTacoustical methods
 geophysical methods
 streamers
SNBefore 1978, search deep-tow.
deep-water environment  search
RTanaerobic environment
 aquatic environment
 brackish-water environment
 deep-sea environment
 deltaic environment
 depositional environment
 estuarine environment
 fluvial environment
 fresh-water environment
 glaciofluvial environment
 hemipelagic environment
 hype
SNUse deep-sea environment if applicable. Added to Thesaurus in 1993.
deepening  search
USEdredging
Deer Lake Group  search
RTCarboniferous
 Newfoundland Island
 Precambrian
 Wyoming
SNCarboniferous formation in W Newfoundland. Also a Precambrian formation in SE Wyoming. Indexed with ages as applicable. Added to Thesaurus in 1989.
Deer Lodge County Montana  search
BTUnited States
 .Montana
 ..Deer Lodge County Montana
SNSW Montana.
deerite  search
BTsilicates
 .chain silicates
 ..deerite
defects  search
RTcrystal dislocations
 crystal structure
 crystallography
 crystals
 deformation
 minerals
 point defects
 stacking
 surface defects
Defiance County Ohio  search
BTUnited States
 .Ohio
 ..Defiance County Ohio
definition  search
RTclassification
 identification
 nomenclature
 photogrammetry
SNUsed as a general term.
Deflandrea  search
BTpalynomorphs
 .Dinoflagellata
 ..Deflandrea
RTmicrofossils
SNIndexed with microfossils if applicable.
deflation  search
BTerosion
 .wind erosion
 ..deflation
RTwind transport
 deserts
 dust
 transport
 blowouts
 desert pavement
 loess
 saltation
SNRestricted. For calderas or other volcanic features, use subsidence.
deflection of the vertical  search
SNBefore 1972, was used in subfile G.
defo  search
deforestation  search
RTconservation
 ecology
 fires
 forestry
 forests
 land use
 reclamation
deformation  search
NTbrittle deformation
 ductile deformation
 plastic deformation
RTanelasticity
 annealing
 Atterberg limits
 axial-plane structures
 biaxial tests
 boudinage
 boundary conditions
 brittle materials
 brittleness
 bulk modulus
 cataclasis
 cleavage
 competent materials
 compression
 compression tectonics
 compressive strength
 coseismic
SNUsed for the process of folding, faulting, shearing, compression, or extension of the rocks as a result of various forces. Also search structural analysis for mid-scale; tectonics for large-scale. Also search ultrastructure for microscopic scale. Before 1
degasification  search
UFdevolatilization (degasification)
RToil and gas fields
 coal
 petroleum
 degassing
 volatilization
 natural gas
 coal seams
SNAs of 1989, restricted to process related to the energy sources such as coal seams, coalbed methane, and oil and gas fields. For process involving the mantle, magmas or atmosphere, use degassing. Added to Thesaurus in 1989.
degassing  search
UFdevolatilization (degassing)
 outgassing
RTmantle
 atmosphere
 boiling
 volatilization
 degasification
SNAs of 1989, restricted to outgassing; that is, processes related to the mantle, magmas, atmosphere, etc. For processes concerning the energy sources such as coal seams, coalbed methane or oil and gas fields, use degasification. Before 1995, also search de
deglaciation  search
UFglacial recession
RTglaciers
 glaciation
 Heinrich events
 late-glacial environment
degradation  search
UFdeterioration
RTerosion
 soils
 geomorphology
 leaching
 weathering
 biodegradation
 destruction
 fatigue
 denudation
 durability
 land loss
 photolysis
 salinization
Dehra Dun India  search
BTAsia
 .Indian Peninsula
 ..India
 ...Uttar Pradesh India
 ....Dehra Dun India
UFDehradun India
SNCity in NW Uttar Pradesh, N India.
Dehradun India  search
USEDehra Dun India
dehydr  search
dehydration  search
UFdrying
RTgeochemistry
 sediments
 desiccation
 hydration
 water of dehydration
Deimos Satellite  search
RTMars
 satellites
SNOne of satellites of Mars. Added to Thesaurus in 1989.
Deinotherioidea  search
BTChordata
 .Vertebrata
 ..Tetrapoda
 ...Mammalia
 ....Theria
 .....Eutheria
 ......Proboscidea
 .......Deinotherioidea
SNSuborder.
Dekkan Plateau  search
USEDeccan Plateau
DEKORP  search
UFDeutsches Kontinentales Reflexionsseismisches Profil
RTreflection methods
 seismic methods
 Germany
SNAcronym. Added to Thesaurus in 1993.
Del Monte Beach  search
BTUnited States
 .California
 ..Monterey County California
 ...Del Monte Beach
SNOn Monterey Peninsula in Monterey County in W California.
Del Norte County California  search
BTUnited States
 .California
 ..Del Norte County California
RTRedwood National Park
SNNW California.
Del Rio Texas  search
BTUnited States
 .Texas
 ..Val Verde County Texas
 ...Del Rio Texas
SNCity on the Rio Grande in SW Texas.
delafossite  search
BToxides
 .delafossite
RTiron oxides
Delamerian Orogeny  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...lower Paleozoic
 ....Delamerian Orogeny
RTCambrian
 Ordovician
 orogeny
 tectonics
 South Australia
 Australia
 Pan-African Orogeny
 New South Wales Australia
 Tasmania Australia
 Victoria Australia
SNCambrian-Ordovician. Southeastern Australia. Indexed with age as applicable. Added to Thesaurus in 1995.
delamination  search
RTasthenosphere
 boundary conditions
 clay minerals
 convection
 crust
 crustal thickening
 layered materials
 lithosphere
 mantle
 sheet silicates
 tectonics
SNAdded to Thesaurus in 1995.
Delaware  search
BTUnited States
 .Delaware
NTKent County Delaware
 New Castle County Delaware
 Sussex County Delaware
RTAtlantic Coastal Plain
 Aquia Formation
 Carolina Bays
 Calvert Formation
 Chesapeake Group
 Choptank River
 Cohansey Formation
 Delaware Bay
 Delaware River
 Delaware River basin
 Delmarva Peninsula
 Indian River
 Kirkwood-Cohansey Aquifer
 Magothy Aquifer
 Magothy Fo
Delaware Basin  search
BTUnited States
 .Delaware Basin
RTNew Mexico
 Texas
 Brushy Canyon Formation
 Permian Basin
SNSE New Mexico and SW Texas. Indexed with states as applicable.
Delaware Bay  search
BTUnited States
 .Delaware Bay
RTNorth Atlantic
 Delaware
 New Jersey
SNArm of Atlantic Ocean. Indexed with states as applicable.
Delaware County Indiana  search
BTIndiana
 .Delaware County Indiana
SNE Indiana.
Delaware County Iowa  search
BTUnited States
 .Iowa
 ..Delaware County Iowa
SNE Iowa.
Delaware County New York  search
BTUnited States
 .New York
 ..Delaware County New York
SNS New York.
Delaware County Ohio  search
BTUnited States
 .Ohio
 ..Delaware County Ohio
SNCentral Ohio.
Delaware County Oklahoma  search
BTUnited States
 .Oklahoma
 ..Delaware County Oklahoma
SNNE Oklahoma.
Delaware County Pennsylvania  search
BTUnited States
 .Pennsylvania
 ..Delaware County Pennsylvania
SNSE Pennsylvania.
Delaware Limestone  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Devonian
 ....Middle Devonian
 .....Delaware Limestone
RTOhio
SNOverlies Columbus Limestone; underlies Olentangy Shale. Central and N Ohio.
Delaware Mountain Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Permian
 ....Guadalupian
 .....Delaware Mountain Group
RTTexas
 Bell Canyon Formation
 Brushy Canyon Formation
 Cherry Canyon Formation
SNW Texas. Added to Thesaurus in 1985.
Delaware River  search
BTUnited States
 .Delaware River
RTPennsylvania
 New York
 Delaware
 New Jersey
SNFlows from S New York SE into Delaware Bay. Indexed with states as applicable.
Delaware River basin  search
BTUnited States
 .Delaware River basin
RTPennsylvania
 New York
 Delaware
 New Jersey
SNIndexed with states as applicable.
Delhi India  search
BTAsia
 .Indian Peninsula
 ..India
 ...Delhi India
NTNew Delhi India
SNTerritory in N central India including the city NNE of New Delhi.
Delhi Supergroup  search
BTChronostratigraphic Units
 .Precambrian
 ..Delhi Supergroup
UFDelhi System
RTIndia
 Rajasthan India
 Haryana India
SNFrom the Delhi System which included Ajabgarh Series, Hornstone Breccia, Kushalgarh Limestone, Alwar Series, Raialo limestones and quartzes. Hornstone Breccia and Kushalgarh Limestone later confined to NE Rajputana, and Raialos excluded from Delhis to for
Delhi System  search
USEDelhi Supergroup
Delinesti Romania  search
BTEurope
 .Southern Europe
 ..Banat
 ...Delinesti Romania
BTEurope
 .Southern Europe
 ..Romania
 ...Delinesti Romania
SNVillage in Caras-Severin County in W part of country. This term has multiple hierarchies.
dellenite  search
BTigneous rocks
 .volcanic rocks
 ..rhyodacites
 ...dellenite
Dellys Algeria  search
BTAfrica
 .North Africa
 ..Algeria
 ...Dellys Algeria
SNCity on Mediterranean Sea E of Algiers in N Algeria.
Delmarva Peninsula  search
BTUnited States
 .Delmarva Peninsula
RTVirginia
 Maryland
 Delaware
SNBetween Chesapeake and Delaware bays. Indexed with states as applicable.
Delmas Saskatchewan  search
BTCanada
 .Western Canada
 ..Saskatchewan
 ...Delmas Saskatchewan
SNVillage in W central Saskatchewan.
Delocrinus  search
BTInvertebrata
 .Echinodermata
 ..Crinozoa
 ...Crinoidea
 ....Inadunata
 .....Delocrinus
SNGenus.
DeLong Mountains  search
USEDe Long Mountains
Delta Area  search
RTNetherlands
SNNetherlands. Indexed with regions as applicable.
Delta County Colorado  search
BTUnited States
 .Colorado
 ..Delta County Colorado
SNW Colorado.
Delta County Michigan  search
BTUnited States
 .Michigan
 ..Michigan Upper Peninsula
 ...Delta County Michigan
SNN Michigan.
Delta County Texas  search
BTUnited States
 .Texas
 ..Delta County Texas
SNNE Texas.
delta fans  search
USEfan deltas
Delta River  search
BTUnited States
 .Alaska
 ..Delta River
RTSouthern Alaska
 East-Central Alaska
 Fairbanks Alaska
 Tanana River
SNIn E Alaska. Joins the Tanana River at Fairbanks. Indexed with Southern Alaska or East-Central Alaska as applicable.
deltaic  search
SNA valid term through 1977. After 1977, use deltas or (as of 1981) deltaic environment or deltaic sedimentation.
deltaic env  search
deltaic environment  search
RTcoastal environment
 deep-water environment
 deltaic sedimentation
 deltas
 depositional environment
 ecology
 paleoecology
 sedimentation
SNAdded to Thesaurus in 1981.
deltaic sedimentation  search
BTsedimentation
 .deltaic sedimentation
RTdeltaic environment
 Gilbert-type deltas
 deltas
SNAdded to Thesaurus in 1981.
deltas  search
NTfan deltas
 Gilbert-type deltas
RTdeltaic environment
 deltaic sedimentation
 ecology
 fluvial features
 geomorphology
 paleoecology
 sedimentation
 shore features
SNAs of 1981, use deltaic environment for type of environment.
DEM  search
SNNot a valid term for GeoRef. See digital terrain models.
demagnetization  search
NTadiabatic demagnetization
 alternating field demagnetization
 chemical demagnetization
 thermal demagnetization
RTcharacteristic remanent magnetization
 geophysics
 magnetic hysteresis
 magnetization
 paleomagnetism
 remagnetization
 remanent magnetization
demand  search
RTconsumption
 economics
 markets
SNAdded to Thesaurus in 1981.
Demopolis Chalk  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Upper Cretaceous
 .....Demopolis Chalk
RTMississippi
 Alabama
 Bluffport Marl Member
SNAlabama and E Mississippi. Includes Bluffport Marl Member. Added to Thesaurus in 1989.
Demospongea  search
BTInvertebrata
 .Porifera
 ..Demospongea
Denali Fault  search
BTNorth America
 .Denali Fault
RTAlaska
 Yukon Territory
SNMount McKinley area in S central Alaska. Extends into Yukon Territory. Indexed with Alaska or Yukon Territory as applicable.
Denali National Park  search
BTUnited States
 .Alaska
 ..Denali National Park
UFMount McKinley National Park
RTAlaska Range
 Southern Alaska
 national parks
 East-Central Alaska
SNIncludes Mount McKinley, Alaska Range, S central Alaska. Park name was changed to the Athabascan name in 1980. Indexed with East-Central Alaska and/or Southern Alaska as applicable.
Denbighshire Wales  search
BTEurope
 .Western Europe
 ..United Kingdom
 ...Great Britain
 ....Wales
 .....Denbighshire Wales
SNFormer county in N Wales. As of 1975, part of Clwyd. Also search Denbigh and Wales.
dendrochronology  search
USEtree rings
dendrograms  search
BTstatistical analysis
 .dendrograms
Dendroidea  search
BTGraptolithina
 .Dendroidea
RTInvertebrata
 Hemichordata
SNIndexed with Hemichordata or Invertebrata as applicable.
Dengizkul  search
RTUzbekistan
SNLake SW of Bukhara. Indexed with Uzbekistan as applicable.
Dengying Formation  search
BTChronostratigraphic Units
 .Precambrian
 ..Proterozoic
 ...Sinian
 ....Dengying Formation
RTChina
SNSW China. Added to Thesaurus in 1989.
Denison Trough  search
BTAustralasia
 .Australia
 ..Queensland Australia
 ...Denison Trough
SNSE Queensland, Australia. Added to Thesaurus in 1985.
denitrification  search
RTgeochemistry
Denmark  search
BTEurope
 .Western Europe
 ..Scandinavia
 ...Denmark
NTBornholm
 Copenhagen Denmark
 Djursland
 Helsingor Denmark
 Stevns Klint
 Vendsyssel
 Zealand
RTBaltic Glaciation
 Baltic region
 Atlantic Ocean Islands
 Oresund
 Baltic Shield
 Fennoscandia
 European Platform
 North Sea Coast
 North Sea region
 Tornquist-Teisseyre Zone
 Jutland
 Zechstein
dense nonaqueous phase liquids  search
BTnonaqueous phase liquids
 .dense nonaqueous phase liquids
UFDNAPLs
RTpollutants
 liquid phase
 density
 chlorinated hydrocarbons
 oil spills
 leaking underground storage tanks
 light nonaqueous phase liquids
SNBefore 1993, also search DNAPL. Added to Thesaurus in 1993.
densities  search
USEdensity
densities and temperatures  search
SNAs of 1993, no longer a valid term for GeoRef. Usually out-of-scope. Used with aeronomy.
density  search
UFdensities
RTisostasy
 convection currents
 decompaction
 sea water
 bulk density
 buoyancy
 specific gravity
 dense nonaqueous phase liquids
 compactness
 light nonaqueous phase liquids
 density logging
density currents  search
BTcurrents
 .density currents
RTturbidity currents
density logging  search
RTdensity
 well-logging
SNAdded to Thesaurus in 1985.
Dent County Missouri  search
BTUnited States
 .Missouri
 ..Dent County Missouri
Dentalium  search
BTInvertebrata
 .Mollusca
 ..Scaphopoda
 ...Dentalium
SNGenus.
Denton County Texas  search
BTUnited States
 .Texas
 ..Denton County Texas
denudation  search
RTdegradation
 erosion
 erosion features
 geomorphology
 processes
 resurfacing
 water erosion
 weathering
Denver Basin  search
BTUnited States
 .Denver Basin
UFD-J Basin
 Denver Julesberg Basin
RTWyoming
 Colorado
 Wattenberg Field
 Nebraska
 J Sandstone
SNPrimarily in central and NE Colorado. Indexed with states as applicable.
Denver Colorado  search
BTUnited States
 .Colorado
 ..Denver County Colorado
 ...Denver Colorado
UFDenver region
SNCity in NE central Colorado.
Denver County Colorado  search
BTUnited States
 .Colorado
 ..Denver County Colorado
NTDenver Colorado
SNN central Colorado, coextensive with the city of Denver.
Denver Formation  search
RTColorado
 K-T boundary
 Paleocene
 Upper Cretaceous
SNUpper Cretaceous and Paleocene. E Colorado. Indexed with ages as applicable. Added to Thesaurus in 1985.
Denver Julesberg Basin  search
USEDenver Basin
Denver region  search
USEDenver Colorado
deoxyribonucleic acid  search
USEDNA
Department of Energy, U.S.  search
USEU. S. Department of Energy
depletion  search
RTconservation
 mineral resources
 natural resources
 petroleum
 reclamation
 utilization
 water use
SNAs of 1981, restricted to resources. Before 1981, used as a general term.
deposition  search
RTaccretion
 alluvial fans
 alluvial plains
 cementation
 diagenesis
 Fischer plots
 glacial geology
 glaciation
 Heinrich events
 ice movement
 overbank sediments
 reservoirs
 reworking
 sedimentary structures
 sedimentation
 sediments
 settling
 siltation
 stratification
 u
SNBefore 1998, if applicable, also search sedimentary processes which was chiefly used for economic studies.
depositional environment  search
UFenvironment of deposition
 sedimentary environment
RTdeep-sea environment
 aerobic environment
 anaerobic environment
 alpine environment
 deep-water environment
 aquatic environment
 brackish-water environment
 arctic environment
 arid environment
 coastal environment
 boreal environment
 cave environment
 deltaic env
SNUse the most specific terms. Before 1993, also search environment AND (deposition or sedimentation). Added to Thesaurus in 1993.
depositional fault  search
USEgrowth faults
depositional remanent magnetization  search
BTmagnetization
 .remanent magnetization
 ..depositional remanent magnetization
UFdetrital remanent magnetization
RTpaleomagnetism
deposits  search
SNAs of 1981, no longer a valid term for GeoRef. See list C; mineral deposits, genesis; metal ores; nonmetal deposits. Before 1981, included use for all papers on nonmetal commodities.
depressions  search
RTbasins
 diwa structure
 folds
 geomorphology
depth  search
RTdeep aquifers
 depth indicators
 dimensions
 Mohorovicic discontinuity
 shallow aquifers
 shallow depth
depth indicators  search
RTburial
 burial diagenesis
 depth
 indicators
SNAdded to Thesaurus in 1981.
depth of compensation  search
USEcarbonate compensation depth
Derby England  search
BTEurope
 .Western Europe
 ..United Kingdom
 ...Great Britain
 ....England
 .....Derbyshire England
 ......Derby England
SNCity in Derbyshire in central England.
Derbyshire England  search
BTEurope
 .Western Europe
 ..United Kingdom
 ...Great Britain
 ....England
 .....Derbyshire England
NTDerby England
RTMidlands
 Peak District
SNCounty in central England.
Dermaptera  search
BTInvertebrata
 .Arthropoda
 ..Mandibulata
 ...Insecta
 ....Pterygota
 .....Neoptera
 ......Exopterygota
 .......Dermaptera
UFDermapteroida
SNOrder.
Dermapteroida  search
USEDermaptera
Dermoptera  search
BTChordata
 .Vertebrata
 ..Tetrapoda
 ...Mammalia
 ....Theria
 .....Eutheria
 ......Insectivora
 .......Dermoptera
SNSuborder.
Des Moines County Iowa  search
BTUnited States
 .Iowa
 ..Des Moines County Iowa
Des Moines Lobe  search
RTIowa
 Laurentide ice sheet
 Minnesota
 South Dakota
SNPart of Laurentide ice sheet during Wisconsinan glaciation. Added to Thesaurus in 1985.
Des Moines Series  search
USEDesmoinesian
desalination  search
USEdesalinization
desalinization  search
UFdesalination
RTsoils
 ground water
 leaching
 hydrochemistry
 water resources
 water management
 decontamination
 polluted water
 soil treatment
 water treatment
 drinking water
 potability
 water quality
 salinity
 sea water
 brines
 salt
 dilution
 salinization
Descartes Algeria  search
BTAfrica
 .North Africa
 ..Algeria
 ...Oran Algeria
 ....Descartes Algeria
SNVillage in NW Algeria.
Deschutes County Oregon  search
BTUnited States
 .Oregon
 ..Deschutes County Oregon
NTNewberry Volcano
SNCentral Oregon.
Deschutes Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Neogene
 ....Deschutes Formation
RTPliocene
 Miocene
 Oregon
SNIndexed with ages as applicable. Added to Thesaurus in 1989.
Deschutes River  search
RTColumbia River
 Oregon
 Puget Sound
 United States
 Washington
SNTributary of the Columbia River, N central Oregon. Also a river, in NW Washington, which flows into Puget Sound. Indexed with states as applicable. Added to Thesaurus in 1985.
descloizite  search
BTvanadates
 .descloizite
description  search
RTlandform description
 morphology
SNUsed as a general term.
Desert Basin  search
SNNot a valid term for GeoRef. Use Canning Basin if applicable.
Desert Creek Zone  search
RTColorado
 Paradox Basin
 Utah
SNParadox Basin of Colorado and Utah. Indexed with states as applicable. Added to Thesaurus in 1989.
desert pavement  search
BTeolian features
 .desert pavement
RTwind erosion
 deserts
 deflation
 talus slopes
SNReintroduced. Was not a valid GeoRef index term between 1971 and 1992. Before 1971, used in subfile N. Before 1993, also search eolian features and deserts. Added to Thesaurus in 1993.
desert pediplains  search
USEpediplains
desert plains  search
USEpediplains
Desert soils  search
BTsoils
 .Desert soils
RTsoil group
 Zonal soils
desert varnish  search
USErock varnish
desertification  search
RTdeserts
 ecology
 geomorphology
 processes
 salinization
deserts  search
BTeolian features
 .deserts
RTecology
 geomorphology
 arid environment
 barchans
 rock varnish
 wadis
 yardangs
 playas
 deflation
 desert pavement
 desertification
 ergs
 sand seas
 sand sheets
Desha County Arkansas  search
BTUnited States
 .Arkansas
 ..Desha County Arkansas
desiccation  search
RTdehydration
 ecology
 moisture
 pore water
 soils
design  search
RTaseismic design
 CAD
 dams
 development
 engineering geology
 foundations
 instruments
 marine installations
 nuclear facilities
 reservoirs
 safety
 shorelines
 tunnels
 underground installations
 waterways
Desmidiales  search
BTPlantae
 .algae
 ..Chlorophyta
 ...Desmidiales
RTmicrofossils
SNIndexed with microfossils if applicable.
desmine  search
USEstilbite
Desmoceratida  search
BTInvertebrata
 .Mollusca
 ..Cephalopoda
 ...Tetrabranchiata
 ....Ammonoidea
 .....Desmoceratida
Desmoinesian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Pennsylvanian
 .....Middle Pennsylvanian
 ......Desmoinesian
NTBoggy Shale
 Cabaniss Formation
 Cherokee Group
 Hartshorne Sandstone
 Krebs Group
 Labette Shale
 Marmaton Group
 Savanna Formation
 Spiro Sandstone
 Wewoka Formation
UFDes Moines Series
 Desmoinesian Series
RTIowa
 Missouri
 Oklahoma
 Nebraska
 Kansas
 Arkansas
 Manakacha Formation
 Bevier Coal
 Francis Creek Shale
SNComprises Cherokee Group, Marmaton Group, Cabaniss Group, and Krebs Group. Subdivided into Venteran and Cygnian substages.
Desmoinesian Series  search
USEDesmoinesian
Desmostylia  search
BTChordata
 .Vertebrata
 ..Tetrapoda
 ...Mammalia
 ....Theria
 .....Eutheria
 ......Desmostylia
SNOrder.
Desolation Islands  search
USEKerguelen Islands
desorption  search
RTadsorption
 geochemistry
desoxyribonucleic acid  search
USEDNA
destruction  search
RTcatastrophes
 corrosion
 damage
 degradation
 geologic hazards
SNUsed as a general term. Also see damage, degradation.
detachment  search
USEdecollement
detachment faults  search
BTfaults
 .detachment faults
UFsole faults
RTaccommodation zones
SNAdded to Thesaurus in 1989.
detection  search
RTbackground level
 chemical analysis
 detection limit
 earthquakes
SNAppropriate to a large number of general topics.
detection limit  search
RTanalysis
 background level
 chemical analysis
 detection
 geochemical surveys
 geochemistry
SNMinimum concentration of a substance which can be determined under specified analytical conditions. Added to Thesaurus in 1995.
detergents  search
RTenvironmental geology
 liquid waste
 surfactants
 waste disposal
 waste water
deterioration  search
USEdegradation
determination  search
SNNot a valid term for GeoRef. For absolute age determination, use absolute age in conjunction with dates.
detrital deposits  search
RTdetritus
 mineral deposits, genesis
SNAdded to Thesaurus in 1981.
detrital fan  search
USEalluvial fans
detrital minerals  search
USEdetritus
detrital remanent magnetization  search
USEdepositional remanent magnetization
detrital sedimentation  search
BTsedimentation
 .detrital sedimentation
SNAdded to Thesaurus in 1981.
detritus  search
UFdetrital minerals
RTabrasion
 erosion
 weathering
 laminite
 debris
 detrital deposits
SNAlso search detrital.
Detroit River  search
BTNorth America
 .Detroit River
RTOntario
 Michigan
 Essex County Ontario
 Lake Erie
 Lake Saint Clair
 Wayne County Michigan
 Windsor Ontario
SNFlows from Lake Saint Clair to Lake Erie. International boundary separates SW Ontario and SE Michigan. Indexed with Michigan and/or Ontario as applicable. Added to Thesaurus in 1993.
Detroit River Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Devonian
 ....Middle Devonian
 .....Detroit River Group
RTOntario
 Ohio
 Michigan
 Lucas Formation
 Sylvania Formation
SNIncludes Sylvania Formation, Amherstburg Formation, Lucas Formation. SE Michigan, N Ohio, and W Ontario.
Deuel County Nebraska  search
BTUnited States
 .Nebraska
 ..Deuel County Nebraska
Deuel County South Dakota  search
BTUnited States
 .South Dakota
 ..Deuel County South Dakota
deuterium  search
BTisotopes
 .stable isotopes
 ..deuterium
BThydrogen
 .deuterium
UFH-2
RTD/H
SNThis term has multiple hierarchies.
Deutsche Demokratische Republik  search
SNNot a valid term for GeoRef. As of 1993, see Germany and also Mecklenburg-Western Pomerania Germany, Brandenburg Germany, Saxony-Anhalt Germany, Thuringia Germany, and Saxony Germany.
Deutsches Kontinentales Reflexionsseismisches Profil  search
USEDEKORP
Deux-Montagnes County Quebec  search
BTCanada
 .Eastern Canada
 ..Quebec
 ...Deux-Montagnes County Quebec
Deux-Sevres France  search
BTEurope
 .Western Europe
 ..France
 ...Deux-Sevres France
RTPoitou
developing countries  search
UFThird World
RTeconomics
 industrialized countries
SNAdded to Thesaurus in 1995.
development  search
RTdesign
 economic geology
 exploration
 ground water
SNUsed as a general term.
Devensian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Quarternary
 ....Pleistocene
 .....Upper Pleistocene
 ......Devensian
NTupper Devensian
SNEurope.
deviation, standard  search
USEstandard deviation
Devils Icebox  search
RTBoone County Missouri
SNCave in Boone County in central Missouri. Indexed with county or region as applicable.
Devils Lake  search
RTNorth Dakota
 Ramsey County North Dakota
 Sauk County Wisconsin
 Wisconsin
SNRamsey County, NE central North Dakota, largest of a group of lakes at N47#DG58'N48#DG15' W098#DG52'W099#DG05'. Before 1989, Devils Lake may also have been used for the neighboring town. Also occurs in other locations, notably Sauk County Wisconsin. Searc
devitrification  search
RTgeochemistry
 glasses
 lithogeochemistry
 vitrification
 volcanic glass
devolatilization (degasification)  search
USEdegasification
devolatilization (degassing)  search
USEdegassing
devolatilization (volatilization)  search
USEvolatilization
Devoluy  search
BTEurope
 .Western Europe
 ..France
 ...Devoluy
RTDauphine
 Dauphine Alps
SNLimestone range of the Dauphine Pre-Alps in SE France.
Devon  search
SNNot a valid term for GeoRef. See Devonshire England.
Devon Island  search
BTCanada
 .Northwest Territories
 ..Franklin District Northwest Territories
 ...Queen Elizabeth Islands
 ....Devon Island
NTRadstock Bay
UFNorth Devon Island
SNN of Baffin Island off Baffin Bay in Franklin District. Also search Devon not England.
Devonian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Devonian
NTLower Devonian
 Middle Devonian
 Upper Devonian
 Ackley Granite
 Barre Granite
 Beaverhill Lake Group
 Cedar City Formation
 Chelmsford Granite
 Fisset Brook Formation
 Genesee Group
 Gile Mountain Formation
 Guilmette Formation
 Heemskirk Granite
 Hunsruck Shale
 Keg River Formation
 Levis Shale
 Lilydale Limestone
 Lost Burro Formation
 Miette Complex
 Millboro Shale
 Muth Quartzite
 Old Red Sandstone
 Ramparts Formation
 Slave Point Formation
 Swan Hills Formation
 Traverse Group
 Upper Old Red Sandstone
 Waterways Formation
 Zlichovian
RTAntler Orogeny
 Chattanooga Shale
 Alice Springs Orogeny
 Beacon Supergroup
 Arkansas Novaculite
 Broken River Formation
 Dalradian
 Bedford Shale
 Berea Sandstone
 Henderson Gneiss
 Geirud Formation
 Catskill Formation
 Galway Granite
 Downtonian
 Earn Group
 Hercynian
SNAbove Silurian, below Carboniferous.
Devonshire England  search
BTEurope
 .Western Europe
 ..United Kingdom
 ...Great Britain
 ....England
 .....Devonshire England
NTChudleigh England
 Dartmoor
 Exeter England
 Okehampton England
 Teign Valley
 Torquay England
RTTamar Estuary
 Cornubian Batholith
 Tamar Valley
SNCounty in SW England. Also search Devon and England.
dewatering  search
SNAs of 1981, no longer a valid term for GeoRef. See drawdown or dehydration or drainage or mine dewatering.
Dewey County Oklahoma  search
BTUnited States
 .Oklahoma
 ..Dewey County Oklahoma
SNW Oklahoma.
Dewey County South Dakota  search
BTUnited States
 .South Dakota
 ..Dewey County South Dakota
SNN central South Dakota.
dextral faults  search
USEright-lateral faults
Dhajala Meteorite  search
BTmeteorites
 .stony meteorites
 ..chondrites
 ...Dhajala Meteorite
RTIndia
 Gujarat India
SNImpact at Dhajala, Gujarat, W India. Added to Thesaurus in 1989.
Dhanbad India  search
BTAsia
 .Indian Peninsula
 ..India
 ...Bihar India
 ....Dhanbad India
SNTown in SE Bihar, E India.
Dharwar Craton  search
BTAsia
 .Indian Peninsula
 ..India
 ...Dharwar Craton
RTChitradurga schist belt
 Kolar schist belt
SNS Indian Shield. Added to Thesaurus in 1993.
Dharwar India  search
BTAsia
 .Indian Peninsula
 ..India
 ...Karnataka India
 ....Dharwar India
SNCity in NW Karnataka. Now part of the joint municipality of Hubli-Dharwar.
Dharwars  search
Dharwars Supergroup  search
Dhenkanal India  search
BTAsia
 .Indian Peninsula
 ..India
 ...Orissa India
 ....Dhenkanal India
SNTown and district in E central Orissa, E India.
diabase  search
BTigneous rocks
 .plutonic rocks
 ..diabase
NTdiabase porphyry
 olivine diabase
 quartz diabase
 tholeiitic dolerite
UFdolerite
RTbasalts
 trap rocks
 metadiabase
 ophite
diabase porphyry  search
BTigneous rocks
 .plutonic rocks
 ..diabase
 ...diabase porphyry
RTporphyry
Diablo Plateau  search
USEDiablo Platform
Diablo Platform  search
UFDiablo Plateau
RTNew Mexico
 Texas
 West Texas
SNExtreme W Texas and S New Mexico. Indexed with state and counties as applicable.
Diablo Range  search
RTCalifornia
 Coast Ranges
 Greenville Fault
SNOne of the Coast Ranges in W central California. Indexed with Coast Ranges and counties as applicable.
diachroni  search
diachronism  search
UFheterochrony
RTbiologic evolution
 paleoecology
 stratigraphy
 biostratigraphy
 ontogeny
SNConcept is used for the appearance of a flora or fauna in a new region during a time period significantly different from the time when it inhabited the old region.
diagenesis  search
NTburial diagenesis
 cementation
 chertification
 early diagenesis
 late diagenesis
 syngenesis
RTalteration
 authigenesis
 calcification
 calcitization
 carbonatization
 coalification
 compaction
 consolidation
 crystallinity
 dedolomitization
 deposition
 dolomitization
 halmyrolysis
 indicators
 lithification
 materials
 metamorphism
 metasomatism
 paleoplacers
 phos
SNUsed for all the chemical, physical and biological changes, modifications, or transformations undergone by a sediment after its initial deposition, and during and after its lithification, exclusive of weathering and metamorphism. Before 1998, if applicabl
diagonal lamination  search
USEcross-laminations
diagonal-slip faults  search
USEoblique-slip faults
diagrams  search
SNAs of 1981, no longer a valid term for GeoRef. See graphic methods.
diallagite  search
BTigneous rocks
 .plutonic rocks
 ..ultramafics
 ...diallagite
dialogite  search
USErhodochrosite
diamictite  search
BTsedimentary rocks
 .clastic rocks
 ..diamictite
UFmixtite
RTterrigenous materials
diamicton  search
BTsediments
 .clastic sediments
 ..diamicton
UFsymmicton
RTtill
diamond  search
BTnative elements
 .diamond
RTdiamonds
 gems
 carbon
 chaoite
 graphite
 lonsdaleite
 kimberlite
SNWhen of economic value, use diamonds.
diamond anvil cells  search
USEanvil cells
Diamond Peak Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Diamond Peak Formation
RTUtah
 California
 Nevada
SNE California, N Nevada and N Utah. Added to Thesaurus in 1989.
diamonds  search
RTabrasives
 carbon
 carbonado
 diamond
 gems
 kimberlite
 paleoplacers
 placers
SNUse only when of economic value. Commodity. See List C.
diaphorite  search
USEultrabasite
diaphthoresis  search
USEretrograde metamorphism
diapiric fold  search
USEdiapirs
diapirism  search
RTdiapirs
 intrusions
 middle crust
 salt domes
 salt tectonics
diapirs  search
UFdiapiric fold
 piercement
 piercing fold
RTcap rocks
 anticlines
 folds
 domes
 flow texture
 salt
 salt domes
 salt tectonics
 diapirism
 mantle plumes
 plumes
Diapsida  search
BTChordata
 .Vertebrata
 ..Tetrapoda
 ...Reptilia
 ....Diapsida
NTAraeoscelidia
 Archosauria
 Eosuchia
 Ichthyosauria
 Lepidosauria
 Placodontia
 Rhynchosauria
 Sauropterygia
 Trilophosauria
UFEuryapsida
SNSubclass. Reptiles with 2 temporal openings (two-arched) in the skull.
diaspore  search
BToxides
 .diaspore
RTaluminum oxides
diasteranes  search
BTorganic compounds
 .hydrocarbons
 ..diasteranes
UFdicholestanes
RTbiomarkers
 steranes
SN'Rearranged steranes' in which methyl groups and hydrogen atoms are exchanged at certain sites. Added to Thesaurus in 1998.
diastrophism  search
SNAs of 1981, no longer a valid term for GeoRef. See orogeny; epeirogeny.
diatomaceous earth  search
BTsedimentary rocks
 .clastic rocks
 ..diatomaceous earth
UFearth, diatomaceous
 tripolite
RTdiatomite
 tripoli
 diatoms
SNBefore 1981, also search diatomite AND sedimentary rocks.
diatomite  search
RTabrasives
 clastic rocks
 diatomaceous earth
 tripoli
SNAs of 1981, to be used only if of economic value; otherwise, use diatomaceous earth. See List C for use as a commodity term.
diatoms  search
BTPlantae
 .algae
 ..diatoms
NTMelosira
 Navicula
 Nitzschia
RTmicrofossils
 phytoplankton
 plankton
 spicules
 diatomaceous earth
 frustules
SNIndexed with microfossils if applicable.
diatremes  search
BTintrusions
 .diatremes
RTvolcanic features
 breccia pipes
 pipes
 volcanic necks
Dibranchiata  search
BTInvertebrata
 .Mollusca
 ..Cephalopoda
 ...Dibranchiata
NTBelemnoidea
UFColeoidea
dibromochloropropane  search
BTorganic compounds
 .halogenated hydrocarbons
 ..chlorinated hydrocarbons
 ...dibromochloropropane
RTpropane
SNAdded to Thesaurus in 1989.
dichloro-diphenyl-trichloro-ethane  search
USEDDT
dicholestanes  search
USEdiasteranes
Dickens County Texas  search
BTUnited States
 .Texas
 ..Dickens County Texas
Dickenson County Virginia  search
BTUnited States
 .Virginia
 ..Dickenson County Virginia
SNSW Virginia.
Dickey County North Dakota  search
BTUnited States
 .North Dakota
 ..Dickey County North Dakota
Dickinson County Iowa  search
BTUnited States
 .Iowa
 ..Dickinson County Iowa
RTSpirit Lake
SNNW Iowa.
Dickinson County Kansas  search
BTUnited States
 .Kansas
 ..Dickinson County Kansas
NTAbilene Kansas
SNCentral Kansas.
Dickinson County Michigan  search
BTUnited States
 .Michigan
 ..Michigan Upper Peninsula
 ...Dickinson County Michigan
SNN Michigan.
dickite  search
BTsilicates
 .sheet silicates
 ..clay minerals
 ...dickite
Dickson County Tennessee  search
BTUnited States
 .Tennessee
 ..Dickson County Tennessee
dicophane  search
USEDDT
Dicotyledoneae  search
BTPlantae
 .Spermatophyta
 ..Angiospermae
 ...Dicotyledoneae
NTAcer
 Alnus
 Annonaceae
 Artemisia
 Asteridae
 Betula
 Carya
 Caryophyllidae
 Compositae
 Corylus
 Dilleniidae
 Dryas
 Ericaceae
 Euphorbiaceae
 Fagus
 Hamamelididae
 Juglandaceae
 Juglans
 Lauraceae
 Leguminosae
 Magnoliidae
 Myrica
 Nothofagus
 Platanus
 Platycarya
 Pterocarya
 Quercus
 Rosidae
 Salix
 Tilia
 Ulmaceae
 Ulmus
RTMonocotyledoneae
Dicroidium  search
BTPlantae
 .Pteridophyta
 ..Filicopsida
 ...Dicroidium
RTGymnospermae
 Pteridospermae
dictionaries  search
RTArabic
 English
 French
 German
 glossaries
 lexicons
 monographs
 publications
 Russian
Dictyocha  search
BTInvertebrata
 .Protista
 ..Silicoflagellata
 ...Dictyocha
RTmicrofossils
SNIndexed with microfossils if applicable.
Dictyonellidina  search
BTInvertebrata
 .Brachiopoda
 ..Articulata
 ...Dictyonellidina
Dicynodontia  search
BTSynapsida
 .Therapsida
 ..Dicynodontia
NTLystrosaurus
SNSuborder.
Didacna  search
BTInvertebrata
 .Mollusca
 ..Bivalvia
 ...Didacna
SNGenus.
Didelphidae  search
BTChordata
 .Vertebrata
 ..Tetrapoda
 ...Mammalia
 ....Theria
 .....Metatheria
 ......Marsupialia
 .......Polyprotodontia
 ........Didelphidae
SNFamily.
Didymograptina  search
BTGraptolithina
 .Graptoloidea
 ..Didymograptina
NTDidymograptus
 Isograptus
RTInvertebrata
 Hemichordata
SNIndexed with Hemichordata or Invertebrata as applicable.
Didymograptus  search
BTGraptolithina
 .Graptoloidea
 ..Didymograptina
 ...Didymograptus
RTInvertebrata
 Hemichordata
SNGenus. Indexed with Hemichordata or Invertebrata as applicable.
dielectric constant  search
UFconstant, dielectric
RTelectrical field
 electrical methods
 dielectric properties
 electrical properties
dielectric properties  search
RTdielectric constant
 electrical field
 electrical methods
 electrical properties
 properties
Dieppe France  search
BTEurope
 .Western Europe
 ..France
 ...Seine-Maritime France
 ....Dieppe France
SNCity on English Channel in N France.
diet  search
RTbiochemistry
 feeding
 metabolism
 middens
 nutrients
 nutrition
 packrat middens
 paleontology
 predation
 trophic analysis
SNAdded to Thesaurus in 1985.
differential thermal analysis  search
UFthermography
RTspectroscopy
 chemical analysis
 analysis
 clay mineralogy
 clay minerals
 sample preparation
 electron microscopy
 DTA data
 thermal analysis
 thermogravimetric analysis
 X-ray diffraction analysis
differential thermal analysis data  search
USEDTA data
differential weathering  search
BTweathering
 .differential weathering
RTdifferentiation
SNBefore, 1978, also search weathering AND differential.
differentiation  search
RTdifferential weathering
 Earth
 horizon differentiation
 magmatic differentiation
 migration of elements
 zoning
SNAs of 1993, see differential weathering, horizon differentiation, magmatic differentiation for those processes; for metamorphic differentiation, see either zoning or migration of elements.
diffraction  search
RTdiffractograms
 neutron diffraction analysis
 ocean waves
 reflection
 refraction
 refraction methods
 seismic migration
 seismology
 wave splitting
diffractograms  search
RTdiffraction
 electron diffraction analysis
 neutron diffraction analysis
 X-ray diffraction analysis
SNAdded to Thesaurus in 1985.
diffusion  search
RTabsolute age
 advection
 chemical analysis
 diffusivity
 geochemistry
 hydrochemistry
 ion exchange
 meteorology
 ocean circulation
 oceanography
 osmosis
 permeability
 polarography
 processes
 sintering
 thermochronology
SNSee also under specific elements.
diffusivity  search
RTdiffusion
 geochemistry
 hydrochemistry
 ion exchange
 migration of elements
 thermal diffusivity
SNUse thermal diffusivity when applicable. Added to Thesaurus in 1985.
diffusivity, thermal  search
USEthermal diffusivity
Difunta Group  search
RTCoahuila Mexico
 K-T boundary
 lower Paleocene
 Mexico
 Upper Cretaceous
SNUpper Cretaceous to lower Paleocene. Mexico. Indexed with ages as applicable.
Digby County Nova Scotia  search
BTCanada
 .Eastern Canada
 ..Maritime Provinces
 ...Nova Scotia
 ....Digby County Nova Scotia
digenite  search
BTsulfides
 .digenite
UFalpha chalcocite
 blue chalcocite
RTchalcocite
Digha  search
BTAsia
 .Indian Peninsula
 ..India
 ...West Bengal India
 ....Digha
SNCoastal region in West Bengal along the Bay of Bengal.
digital cartography  search
BTcartography
 .digital cartography
UFautomatic cartography
RTmaps
 multispectral scanner
 thematic mapper
 data processing
 digital data
 spatial data
 image analysis
SNAdded to Thesaurus in 1993.
digital data  search
UFcomputer data
 computer files
 machine-readable data
RTdata processing
 geographic information systems
 information systems
 data bases
 data retrieval
 information management
 data handling
 data management
 digitization
 Internet
 digital cartography
 digital line graphs
 digital terrain models
 digital simulation
 spati
SNRestricted to use for indexing of machine-readable data. As of 1995, see digital cartography, digital line graphs, digital terrain models or digital simulation for discussion of topics. Data processing may also be used with information systems. Added to T
digital elevation models  search
USEdigital terrain models
digital line graphs  search
RTdata processing
 digital data
 digitization
 graphic methods
 spatial data
SNBefore 1993, also search DLG. Added to Thesaurus in 1993.
digital relief models  search
USEdigital terrain models
digital simulation  search
RTdata processing
 digital data
 image analysis
 mathematical geology
 mathematical models
 models
 pixels
 simulation
 visualization
SNBefore 1978, search digital AND simulation.
digital techniques  search
SNAs of 1981, no longer a valid term for GeoRef. See data processing.
digital terrain models  search
UFdigital elevation models
 digital relief models
RTgeomorphology
 data processing
 elevation
 models
 terrain classification
 digital data
 digitization
 spatial data
 image analysis
 relief
 terrains
SNThe abbreviations DEM or DTM were also sometimes used. Added to Thesaurus in 1993.
digitization  search
RTdata handling
 data processing
 digital data
 digital line graphs
 digital terrain models
SNAlso index digital data if applicable. Added to Thesaurus in 1995.
Digne France  search
BTpes-de-Haute Provence France
 .Digne France
SNCity in SE France.
Dijon France  search
BTEurope
 .Western Europe
 ..France
 ...Cote-d'Or France
 ....Dijon France
SNCity in E central France.
dike swarms  search
RTdikes
 igneous rocks
 intrusions
 ring dikes
 swarms
dikes  search
BTintrusions
 .dikes
NTring dikes
 sheeted dikes
UFdykes
RTigneous rocks
 ring structures
 batholiths
 laccoliths
 clastic dikes
 ring complexes
 dike swarms
 sills
dilatancy  search
RTdeformation
 dilation
 dilatometers
 earthquakes
 geophysics
 seismology
dilatation  search
USEdilation
dilatational wave  search
USEP-waves
dilation  search
UFdilatation
RTdilatancy
 dilatometers
SNUsed as a general term.
dilatometers  search
RTdilatancy
 dilation
 instruments
 seismology
SNAdded to Thesaurus in 1985.
Dilleniidae  search
BTPlantae
 .Spermatophyta
 ..Angiospermae
 ...Dicotyledoneae
 ....Dilleniidae
Dillon Colorado  search
BTUnited States
 .Colorado
 ..Summit County Colorado
 ...Dillon Colorado
SNTown in N central Colorado.
Dillon County South Carolina  search
BTUnited States
 .South Carolina
 ..Dillon County South Carolina
dilution  search
RTconcentration
 decontamination
 desalinization
 geochemistry
 polluted water
 pollution
 saturation
 water treatment
SNAdded to Thesaurus in 1982.
dimension stone  search
BTconstruction materials
 .dimension stone
UFstone, dimension
RTweathering
 conservation
 building stone
 granite deposits
 limestone deposits
 marble deposits
 sandstone deposits
SNIncludes use both as a commodity term and an engineering material. See List C for use as a commodity.
dimensions  search
RTcell dimensions
 depth
 grain size
 grains
dimethyl sulfide  search
UFmethanethiomethane
 methyl sulfide
RTgeochemistry
SNAdded to Thesaurus in 1989.
Dimitrovo coal basin  search
USEPernik coal basin
Dimmit County Texas  search
BTUnited States
 .Texas
 ..Dimmit County Texas
SNSW Texas.
dimorphism  search
SNAs of 1981, no longer a valid term for GeoRef. See polymorphism or sexual dimorphism.
Dinant Basin  search
BTEurope
 .Western Europe
 ..Belgium
 ...Namur Belgium
 ....Dinant Basin
SNS Belgium.
Dinant Belgium  search
BTEurope
 .Western Europe
 ..Belgium
 ...Namur Belgium
 ....Dinant Belgium
SNTown in S Belgium.
Dinantian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Dinantian
NTAsbian
 Tournaisian
 Visean
UFLower Carboniferous
RTMississippian
 Acadian Phase
 Martin Formation
 Avonian
 Culm
 Upper Carboniferous
 Horton Group
 Middle Carboniferous
 Waulsortian facies
SNEurope. Includes Tournaisian and Visean. As of 1981, used for Lower Carboniferous.
Dinaric Alps  search
BTEurope
 .Southern Europe
 ..Dinaric Alps
BTEurope
 .Alps
 ..Eastern Alps
 ...Dinaric Alps
NTVelebit Mountains
 Zlatibor Mountains
RTAlbania
 Croatia
 Slovenia
 Yugoslavia
 Northern Limestone Alps
 Greece
 Karst region
 Trieste Italy
SNSE division of Eastern Alps along Adriatic Sea. Also search Dinaric or Dinarides. This term has multiple hierarchies. Indexed with countries or regions and mountain ranges as applicable.
Dingle Peninsula  search
BTEurope
 .Western Europe
 ..Ireland
 ...Kerry Ireland
 ....Dingle Peninsula
SNJuts into Atlantic in W County Kerry, SW Ireland.
Dinocerata  search
BTChordata
 .Vertebrata
 ..Tetrapoda
 ...Mammalia
 ....Theria
 .....Eutheria
 ......Amblypoda
 .......Dinocerata
RTUngulata
SNSuborder.
Dinoflagellata  search
BTpalynomorphs
 .Dinoflagellata
NTDeflandrea
 Hystrichosphaeridae
 Peridinium
UFDinophyceae
RTmicrofossils
 acritarchs
 eutrophication
 plankton
 Pyrrhophyta
SNHystrichosphaeridae is included here and under acritarchs. Indexed with microfossils if applicable.
Dinophyceae  search
USEDinoflagellata
Dinosaur National Monument  search
BTUnited States
 .Dinosaur National Monument
RTUtah
 Colorado
 national monuments
 Moffat County Colorado
 Uintah County Utah
SNNE Utah and NW Colorado. Indexed with states and counties as applicable. Added to Thesaurus in 1985.
dinosaur nests  search
USEnests
Dinosaur Provincial Park  search
BTCanada
 .Western Canada
 ..Alberta
 ...Dinosaur Provincial Park
SNE of the town of Brooks in SE Alberta. Added to Thesaurus in 1993.
Dinosauria  search
USEdinosaurs
dinosaurs  search
BTChordata
 .Vertebrata
 ..Tetrapoda
 ...Reptilia
 ....dinosaurs
NTOrnithischia
 Saurischia
UFDinosauria
RThorns
 biostratigraphy
 nests
 carnivorous taxa
Dinwiddie County Virginia  search
BTUnited States
 .Virginia
 ..Dinwiddie County Virginia
RTPetersburg Virginia
SNSE central Virginia. Also search Petersburg Virginia if applicable.
Dinwoody Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Triassic
 ....Lower Triassic
 .....Dinwoody Formation
RTIdaho
 Utah
 Wyoming
 Montana
SNW Wyoming, SE Idaho, SW Montana and NE Utah. Added to Thesaurus in 1985.
diogenite  search
BTmeteorites
 .stony meteorites
 ..achondrites
 ...diogenite
SNAdded to Thesaurus in 1981.
Diois  search
BTEurope
 .Western Europe
 ..France
 ...Drome France
 ....Diois
SNMassif in SE France.
Dione Satellite  search
RTicy satellites
 satellites
 Saturn
 Voyager Program
SNOne of the satellites of Saturn. Before 1985, also search Dione AND Saturn. Added to Thesaurus in 1985.
diopside  search
BTsilicates
 .chain silicates
 ..pyroxene group
 ...clinopyroxene
 ....diopside
RTfassaite
 chrome diopside
 salite
diorite family  search
SNAs of 1981, no longer a valid term for GeoRef. Use diorites, alkali diorites, or quartz diorites as applicable.
diorite porphyry  search
BTigneous rocks
 .plutonic rocks
 ..diorites
 ...diorite porphyry
RTporphyry
 volcanic rocks
diorites  search
BTigneous rocks
 .plutonic rocks
 ..diorites
NTalkali diorites
 diorite porphyry
 ferrodiorite
 mangerite
 microdiorite
 monzodiorite
 plagiogranite
 quartz diorites
 syenodiorite
 tonalite
 trondhjemite
RTappinite
 metadiorite
SNBefore 1981, search diorite family.
dioxin  search
USEdioxins
dioxins  search
BTorganic compounds
 .dioxins
UFdioxin
 TCDD
RTpollutants
 toxic materials
 carcinogens
 chlorinated hydrocarbons
 hazardous waste
SNFamily of more than 70 chlorinated dioxins. The commonly accepted name for its most toxic member, 2, 3, 7, 8-tetrachlorodibenzo-#2R-dioxin (TCDD) is dioxin. Dioxin is a byproduct of the manufacture of polychlorinated phenols and occurs as a contaminant of
dip  search
UFangle of dip
RTstructural analysis
 strike
 dipmeter logging
 dip-slip faults
 orientation
SNBefore 1978, included use for dip faults and dip fractures.
dip faults  search
BTfaults
 .dip faults
SNBefore 1978, search faults AND dip.
dip fractures  search
BTfractures
 .dip fractures
SNBefore 1978, search dip AND fractures.
dip moveout  search
RTarrival time
 moveout
 prestack migration
 reflection methods
 seismic methods
 seismic migration
 traveltime
SNDifference in source-to-geophone arrival times from reflector dip. Added to Thesaurus in 1993.
dip-slip faults  search
BTfaults
 .dip-slip faults
RTtransfer faults
 dip
 displacements
SNBefore 1978, search faults AND dip-slip.
Diplocraterion  search
BTichnofossils
 .Diplocraterion
SNGenus.
Diplodocus  search
BTChordata
 .Vertebrata
 ..Tetrapoda
 ...Reptilia
 ....Diapsida
 .....Archosauria
 ......Saurischia
 .......Sauropodomorpha
 ........Sauropoda
 .........Diplodocus
SNGenus. This term has multiple hierarchies.
Diplograptina  search
BTGraptolithina
 .Graptoloidea
 ..Diplograptina
RTInvertebrata
 Hemichordata
SNIndexed with Hemichordata or Invertebrata as applicable.
dipmeter logging  search
BTwell-logging
 .dipmeter logging
RTboreholes
 Formation MicroScanner
 dip
SNBefore 1978, also search well-logging AND dipmeter or dip-meter.
Dipnoi  search
BTChordata
 .Vertebrata
 ..Pisces
 ...Osteichthyes
 ....Sarcopterygii
 .....Dipnoi
SNOrder.
dipole moment  search
RTmagnetic field
 paleomagnetism
dipole-dipole methods  search
BTgeophysical methods
 .electrical methods
 ..dipole-dipole methods
RTgeophysical surveys
 resistivity
 electromagnetic methods
 induced polarization
 potentiometry
SNUsed in induced polarization, electrical and electromagnetic methods. Also search dipole-dipole arrays. Indexed with applicable methods. For surveys, also index geophysical surveys. Added to Thesaurus in 1995.
Diprotodonta  search
BTChordata
 .Vertebrata
 ..Tetrapoda
 ...Mammalia
 ....Theria
 .....Metatheria
 ......Marsupialia
 .......Diprotodonta
NTMacropodidae
SNSuborder.
Diptera  search
BTInvertebrata
 .Arthropoda
 ..Mandibulata
 ...Insecta
 ....Pterygota
 .....Neoptera
 ......Endopterygota
 .......Diptera
NTChironomidae
RTRaphidiodea
SNBefore 1993, also search Dipteri and Insecta.
dipyrite  search
USEpyrrhotite
direct current methods  search
USEdirect-current methods
direct hydrocarbon indicators  search
USEhydrocarbon indicators
direct magnetization  search
BTmagnetization
 .direct magnetization
SNAdded to Thesaurus in 1981.
direct problem  search
UFforward problem
RTseismology
 geophysics
 inverse problem
SNAdded to Thesaurus in 1981.
direct-current methods  search
BTgeophysical methods
 .electrical methods
 ..direct-current methods
UFdirect current methods
RTgeophysical surveys
 potentiometry
SNAdded to Thesaurus in 1985.
directions, current  search
USEcurrent directions
directory  search
RTguidebook
 monographs
 publications
discharge  search
RTeffluents
 flowmeters
 ground water
 hydrologic cycle
 hydrology
 MODFLOW
 recharge
 runoff
 sand boils
 springs
 streamflow
 water balance
 water recovery
SNBefore 1981, also used for effluents.
Discoasteridae  search
BTPlantae
 .algae
 ..nannofossils
 ...Discoasteridae
NTEthmodiscus
RTmicrofossils
 Coccolithophoraceae
 Sphenolithus
SNIndexed with microfossils if applicable.
Discocyclina  search
BTInvertebrata
 .Protista
 ..Foraminifera
 ...Rotaliina
 ....Orbitoidacea
 .....Discocyclina
RTmicrofossils
SNGenus. Indexed with microfossils if applicable.
disconformities  search
USEerosional unconformities
discontinuities  search
NThorizontal discontinuities
 tangential discontinuities
 vertical discontinuities
UFseismic discontinuities
RT410-km discontinuity
 mantle
 seismology
 670-km discontinuity
 crust
 Mohorovicic discontinuity
 Conrad discontinuity
 middle crust
 curved seismic interface
 inclined seismic interface
SNRestricted to use for interface in seismology. For stratigraphic discontinuities use unconformities.
discontinuous materials  search
RTengineering geology
 materials
SNAdded to Thesaurus in 1981.
Discorbacea  search
BTInvertebrata
 .Protista
 ..Foraminifera
 ...Rotaliina
 ....Discorbacea
RTmicrofossils
SNIndexed with microfossils if applicable.
discordant folds  search
BTfolds
 .discordant folds
RTorientation
SNBefore 1978, also search folds AND discordant.
discoveries  search
UFdiscovery
RTmineral deposits, genesis
 placers
 economic geology
 mineral exploration
 coal exploration
 evaluation
SNAs of 1981, restricted to economic geology. Before 1981, used as a general term.
discovery  search
USEdiscoveries
Discovery Bay  search
RTDiscovery Bay Jamaica
 Jefferson County Washington
 South Australia
 Victoria Australia
 Washington
SNBay in Jefferson County, W Washington. Also an inlet of the Indian Ocean bordering South Australia and Victoria. As of 1993, see Discovery Bay Jamaica for the village. Indexed with regions as applicable.
Discovery Bay Jamaica  search
BTCaribbean region
 .West Indies
 ..Antilles
 ...Greater Antilles
 ....Jamaica
 .....Discovery Bay Jamaica
RTDiscovery Bay
SNVillage on central N coast of Jamaica.
Discovery Deep  search
BTIndian Ocean
 .Red Sea
 ..Discovery Deep
SNAlso search Discovery AND deeps.
discrete filters  search
RTanalog filters
 filters
 Fourier analysis
SNAdded to Thesaurus in 1981.
discriminant analysis  search
BTstatistical analysis
 .discriminant analysis
UFdiscriminant function analysis
RTanalysis
 Bayesian analysis
discriminant function analysis  search
USEdiscriminant analysis
disequilibrium  search
USEequilibrium
disharmonic folds  search
BTfolds
 .disharmonic folds
RTdecollement
 flexural-slip
 harmonic folds
SNBefore 1978, also search folds AND disharmonic.
disjunctive folds  search
BTfolds
 .disjunctive folds
SNAdded to Thesaurus in 1982.
Disko Island  search
BTArctic region
 .Greenland
 ..Disko Island
RTDavis Strait
SNDavis Strait just off SW Greenland. Also search Disko.
dislocation creep  search
BTdeformation
 .plastic deformation
 ..dislocation creep
RTcreep
 rheology
dislocations  search
SNAs of 1981, no longer a valid term for GeoRef. For dislocations within crystals, use crystal dislocations.
dispersion  search
SNNo longer a valid term for GeoRef. See chemical dispersion or wave dispersion or optical dispersion. From 1981-1992 was used for the chemical process of dispersion. Before 1981, included use as a general term for dispersal; also search dispersal.
dispersion patterns  search
RTdispersivity
 geochemical methods
 haloes
 leakage anomalies
 mineral exploration
 patterns
 primary dispersion
 secondary dispersion
dispersion, wave  search
USEwave dispersion
dispersive filters  search
RTfilters
SNAdded to Thesaurus in 1981.
dispersivity  search
RTaquifers
 chemical dispersion
 dispersion patterns
 properties
 rock mechanics
 waste disposal
SNAquifer rock property. Added to Thesaurus in 1989.
displacement theory  search
displacements  search
RTdip-slip faults
 drag folds
 faults
 nappes
 overthrust faults
 reactivation
 reverse faults
 seismic moment
 slip rates
 transcurrent faults
 transform faults
 wrench faults
SNRestricted to use for faults.
display, graphic  search
USEgraphic display
disposal barriers  search
UFclay liners
 containment liners
 liners
 soil liners
RTreclamation
 soils
 waste disposal
 clay
 permeability
 waste management
 tailings
 grouting
 landfills
SNBefore 1993, also search clay liners, soil liners, earthen liners, liners and barriers; AND waste disposal. Added to Thesaurus in 1993.
disposal, waste  search
USEwaste disposal
disseminated deposits  search
RTcarlin-type deposits
 mineral deposits, genesis
SNBefore 1978, search disseminated AND ore deposits; search deposits AND disseminated.
dissertations  search
USEtheses
dissipation  search
SNAs of 1981, no longer a valid term for GeoRef. Before 1981, used as a general term.
dissociation  search
RTelectrolysis
 geochemistry
 processes
dissolution  search
SNA valid term through May 1978. After May 1978, use solution or solutions.
dissolved materials  search
RThydrochemistry
 materials
 solubility
 solute transport
 solutes
 suspended materials
SNBefore 1978, search dissolved.
Distephanus  search
BTInvertebrata
 .Protista
 ..Silicoflagellata
 ...Distephanus
RTmicrofossils
SNIndexed with microfossils if applicable.
distortion  search
RTamplitude distortion
 backscattering
 deconvolution
 deformation
 elastic waves
 filters
 linear distortion
 non-linear distortion
 phase distortion
 seismology
 signal distortion
 strain
 wave absorption
 wave amplification
 wave dispersion
distribution  search
RTasymmetric distribution
 cosmopolitan taxa
 power law
 size distribution
 spatial distribution
 statistical distribution
 temporal distribution
distribution coefficients  search
USEpartition coefficients
District of Algoma  search
USEAlgoma District Ontario
District of Cochrane  search
USECochrane District Ontario
District of Columbia  search
BTUnited States
 .District of Columbia
RTAnacostia River basin
 Potomac River
 Potomac River basin
 Rock Creek Park
 Smithsonian Institution
 Wicomico Formation
District of Franklin  search
USEFranklin District Northwest Territories
District of Keewatin  search
USEKeewatin District Northwest Territories
District of Kenora  search
USEKenora District Ontario
District of Mackenzie  search
USEMackenzie District Northwest Territories
District of Nipissing  search
USENipissing District Ontario
District of Sudbury  search
USESudbury District Ontario
District of Temiscamingue  search
USETimiskaming District Ontario
District of Temiskaming  search
USETimiskaming District Ontario
District of Thunder Bay  search
USEThunder Bay District Ontario
District of Timiskaming  search
USETimiskaming District Ontario
Distrito Federal  search
SNNot a valid term for GeoRef. Term used where it is larger than the city it contains. As of 1993, see Buenos Aires Argentina, Federal District Mexico, or Federal District Venezuela as applicable.
disturbances  search
SNAs of 1993, no longer a valid term for GeoRef. Usually out-of-scope. Used with ionosphere and magnetosphere. Term was restricted to extraterrestrial phenomena.
Disturbed Belt  search
BTNorth America
 .Disturbed Belt
RTAlberta
 Canada
 United States
 Montana
 Belt Supergroup
 Rocky Mountains
SNStructural unit, W Montana and S Alberta. Added to Thesaurus in 1985.
diterpanes  search
BTorganic compounds
 .hydrocarbons
 ..diterpanes
RTbiomarkers
 terpanes
 triterpanes
SNAdded to Thesaurus in 1989.
dithionite-citrate-bicarbonate method  search
USEcitrate-bicarbonate-dithionite method
Ditrau Romania  search
BTEurope
 .Southern Europe
 ..Romania
 ...Transylvania
 ....Mures Romania
 .....Ditrau Romania
SNTown in Mures County in Transylvania, E central Romania.
Dittonian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Devonian
 ....Lower Devonian
 .....Dittonian
RTOld Red Sandstone
SNIn Old Red Sandstone, England: upper Gedinnian; above Downtonian.
diurnal variations  search
UFdaily variation
RTmagnetic field
 variations
SNAlso search diurnal.
divergence, plate  search
USEplate divergence
divergent plate boundaries  search
USEaccreting plate boundary
diversity  search
SNNo longer a valid term for GeoRef. As of 1995, see biodiversity, species diversity, or use other specific type.
Divide County North Dakota  search
BTUnited States
 .North Dakota
 ..Divide County North Dakota
divides, drainage  search
SNNot a valid term for GeoRef. See watersheds or drainage basins (catchments).
Divnoe Meteorite  search
BTmeteorites
 .stony meteorites
 ..Divnoe Meteorite
UFDivnoye Meteorite
RTUkraine
SNFound near Divnoe, Stavropol region, Ukraine.
Divnoye Meteorite  search
USEDivnoe Meteorite
diwa structure  search
RTdepressions
 structural controls
 tectonics
SNAdded to Thesaurus in 1995.
diwa-type deposits  search
RTcoal
 genesis
 metal ores
 mineral deposits, genesis
 petroleum
Dixie County Florida  search
BTUnited States
 .Florida
 ..Dixie County Florida
Dixie Valley  search
RTChurchill County Nevada
SNChurchill County in W Nevada. Indexed with county or region as applicable.
Dixon County Nebraska  search
BTUnited States
 .Nebraska
 ..Dixon County Nebraska
Djadjerud Valley  search
BTAsia
 .Middle East
 ..Iran
 ...Djadjerud Valley
Djadokhta Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Upper Cretaceous
 .....Djadokhta Formation
RTMongolia
SNIn the Gobi Desert.
Djeddah Saudi Arabia  search
USEJeddah Saudi Arabia
Djibouti  search
BTAfrica
 .East Africa
 ..Djibouti
UFAfars and Issas Territory
 French Somaliland
RTAfar
 Asal Rift
 Red Sea Basin
SNBecame independent June 27, 1977. Formerly French Territory of the Afars and Issas. Capital city also named Djibouti.
Djiddah Saudi Arabia  search
USEJeddah Saudi Arabia
djurleite  search
BTsulfides
 .djurleite
Djursland  search
BTEurope
 .Western Europe
 ..Scandinavia
 ...Denmark
 ....Djursland
BTEurope
 .Jutland
 ..Djursland
SNPeninsula of Arhus County jutting into the Kattegat in E Jutland. This term has multiple hierarchies.
DLG  search
SNNot a valid term for GeoRef. After 1993, see digital line graphs.
DNA  search
UFdeoxyribonucleic acid
 desoxyribonucleic acid
RTacids
 organic acids
 RNA
 biologic evolution
 molecular biology
 biodiversity
 life origin
SNAcronym. Added to Thesaurus in 1989.
DNAG  search
UFDecade of North American Geology
RTNorth America
 GSA
SNAcronym. Series of projects sponsored by the Geological Society of America. Added to Thesaurus in 1989.
DNAPLs  search
USEdense nonaqueous phase liquids
Dnepropetrovsk Ukraine  search
BTEurope
 .Ukraine
 ..Dnepropetrovsk Ukraine
NTKrivoy Rog Ukraine
 Nikopol Ukraine
 Pavlograd Ukraine
 Saksagan River
 Verkhovtsevo Ukraine
RTKrivoy Rog Basin
SNOblast in E central Ukraine. Also the city. This term has multiple hierarchies.
Dnieper Basin  search
BTEurope
 .Dnieper Basin
BTCommonwealth of Independent States
 .Dnieper Basin
UFDnieper region
RTRussian Federation
 Ukraine
 Belarus
 Dnieper-Donets Basin
SNRiver drainage basin. Before 1978, also search Dnieper. This term has multiple hierarchies. Indexed with former Soviet republics as applicable.
Dnieper region  search
USEDnieper Basin
Dnieper River  search
BTEurope
 .Dnieper River
BTCommonwealth of Independent States
 .Dnieper River
RTRussian Federation
 Ukraine
 Belarus
SNRises in S Valdai Hills and flows S, then SE into a big bend at Dnepropetrovsk, and finally into the Black Sea near Kherson. Also search Dnieper. This term has multiple hierarchies. Indexed with former Soviet republics as applicable.
Dnieper-Donets Basin  search
BTEurope
 .Dnieper-Donets Basin
BTCommonwealth of Independent States
 .Dnieper-Donets Basin
BTRussian Platform
 .Dnieper-Donets Basin
UFDnieper-Donets Depression
 Dnieper-Donets region
RTRussian Federation
 Ukraine
 Dnieper Basin
 Donets Basin
 Korenevskaya Formation
SNRegion comprising the Donets Basin and that part of the Dnieper Basin in the nearby Dnepropetrovsk area. Also search Dnieper-Donets. This term has multiple hierarchies. Indexed with former Soviet republics as applicable.
Dnieper-Donets Depression  search
USEDnieper-Donets Basin
Dnieper-Donets region  search
USEDnieper-Donets Basin
Dniest  search
Dniester River  search
BTEurope
 .Dniester River
BTCommonwealth of Independent States
 .Dniester River
RTUkraine
 Moldavia
 Moldova
SNFlows into Black Sea SW of Odessa. Also search Dniester, Dniester region, Dniester Valley. This term has multiple hierarchies. Indexed with former Soviet republics as applicable.
Dniester-Prut Interfluve  search
BTEurope
 .Dniester-Prut Interfluve
RTUkraine
 Moldavia
 Moldova
 Prut River
SNArea between the two rivers. Includes all of Moldavia in Moldova which formerly was Bessarabia. Indexed with republics as applicable.
Doberlug Germany  search
BTEurope
 .Central Europe
 ..Germany
 ...Brandenburg Germany
 ....Doberlug Germany
RTUpper Lusatia
SNTown in Brandenburg, E Germany. Before 1993, Doberlug was used with Cottbus Bezirk in East Germany. Before 1993, also search Doberlug-Kirchhain.
Doboy Sound  search
BTUnited States
 .Georgia
 ..McIntosh County Georgia
 ...Doboy Sound
SNOn the Atlantic Ocean in McIntosh County, SE Georgia.
Dobrogea  search
USERomanian Dobruja
Dobrudja  search
USEDobruja Basin
Dobrudzha  search
USEDobruja Basin
Dobruja Basin  search
BTEurope
 .Southern Europe
 ..Dobruja Basin
NTBulgarian Dobruja
 Romanian Dobruja
UFDobrudja
 Dobrudzha
RTRomania
 Bulgaria
 Black Sea region
SNBlack Sea coastal strip S of the Danube River including NE Bulgaria. Indexed with countries as applicable.
Dobrzyn Poland  search
BTEurope
 .Central Europe
 ..Poland
 ...Dobrzyn Poland
RTBydgoszcz Poland
SNTown in Wlockawek Province, N central Poland.
Dockum Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Triassic
 ....Upper Triassic
 .....Dockum Group
RTNew Mexico
 Oklahoma
 Colorado
 Texas
 Kansas
 Chinle Formation
 Santa Rosa Sandstone
SNIncludes Sloan Canyon Formation, Sheep Pen Canyon Formation, Tecovas Shale, Santa Rosa Sandstone, Chinle Formation, Pierce Canyon Redbeds, Baldy Hill Formation, Travesser Formation. Colorado, Kansas, Oklahoma, New Mexico, and W Texas.
Docodonta  search
BTChordata
 .Vertebrata
 ..Tetrapoda
 ...Mammalia
 ....Docodonta
SNOrder.
Doda  search
RTIndia
 Jammu and Kashmir
 Pakistan
SNVillage in SW Jammu and Kashmir, disputed territory between India and Pakistan. Before 1993, India was a broader term. Indexed with Jammu and Kashmir AND India and/or Pakistan as applicable.
Doddridge County West Virginia  search
BTUnited States
 .West Virginia
 ..Doddridge County West Virginia
Dodecanese  search
BTMediterranean region
 .Aegean Islands
 ..Greek Aegean Islands
 ...Dodecanese
NTKarpathos
 Rhodes
RTKos
SNGroup of islands in SE Aegean Sea. Also a Greek department. This term has multiple hierarchies.
Dodge County Georgia  search
BTUnited States
 .Georgia
 ..Dodge County Georgia
SNS central Georgia.
Dodge County Minnesota  search
BTUnited States
 .Minnesota
 ..Dodge County Minnesota
SNSE Minnesota.
Dodge County Nebraska  search
BTUnited States
 .Nebraska
 ..Dodge County Nebraska
SNE Nebraska.
Dodge County Wisconsin  search
BTUnited States
 .Wisconsin
 ..Dodge County Wisconsin
SNS central Wisconsin.
DOE  search
USEU. S. Department of Energy
Dogger  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Jurassic
 ....Middle Jurassic
 .....Dogger
RTAalenian
 Bajocian
 Bathonian
 Callovian
SNEurope. Above Lias (Lower Jurassic), below Malm.
Dogger Bank  search
BTAtlantic Ocean
 .North Atlantic
 ..North Sea
 ...Dogger Bank
SNSubmerged sand bank.
Dogo  search
BTnshu
 .Dogo
RTvolcanoes
 Hiroshima Japan
 Shimane Japan
 Tottori Japan
 Dogo Island
SNVolcano on Hiroshima-Tottori prefectural border, W Honshu. Before 1993, also used for the largest of the Oki Islands off W coast of Honshu in Japan Sea. After 1992, see Dogo Island.
Dogo Island  search
BTnshu
 .Shimane Japan
 ..Oki Islands
 ...Dogo Island
RTDogo
SNLargest of the Oki Islands off W coast of Honshu in Japan Sea. Before 1993, also search Dogo AND Oki Islands. Added to Thesaurus in 1993.
Dogtooth Mountains  search
BTCanada
 .Western Canada
 ..British Columbia
 ...Dogtooth Mountains
SNIn SE British Columbia.
Doig Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Triassic
 ....Middle Triassic
 .....Doig Formation
RTAlberta
 British Columbia
SNMiddle Triassic. Alberta and British Columbia. Added to Thesaurus in 1995.
dolerite  search
USEdiabase
Dolgan-Nenets Russian Federation  search
USETaymyr Dolgan-Nenets Russian Federation
Dolina Ukraine  search
BTEurope
 .Ukraine
 ..Dolina Ukraine
RTLvov Ukraine
SNCity in Lvov Oblast in W Ukraine. This term has multiple hierarchies.
dolinen  search
USEdolines
dolines  search
UFdolinen
RThydrogeology
 karst
 sinkholes
dolomite  search
BTcarbonates
 .dolomite
UFbitter spar
 magnesian spar
RTcalcite
 chemically precipitated rocks
 evaporites
 ankerite
 carbonate rocks
 marbles
 light minerals
 dolomitization
 carbonate sediments
 dolostone
 dolomitic composition
 dolomitic limestone
 kutnahorite
SNFor sediments, use carbonate sediments; dolomitic composition. To indicate the rock made of dolomite, use dolostone. Before 1976, also search dolomite for the commodity, the rock, and the sediment.
Dolomite Alps  search
USEDolomites
dolomite marble  search
SNA valid metamorphic rock term through 1977. After 1977, use marbles AND dolomite.
Dolomites  search
BTEurope
 .Alps
 ..Eastern Alps
 ...Dolomites
NTCima d'Asta
 Latemar Massif
 Lessini Mountains
UFDolomite Alps
RTTyrol Austria
 Trentino-Alto Adige Italy
 Veneto Italy
 Marmolada Glacier
SNMountain range of the Eastern Alps between the Adige and Piave river valleys in NE Italy. Indexed with autonomous regions as applicable.
dolomitic composition  search
RTcomposition
 dolomite
 dolomitization
 dolostone
 dolostone deposits
 sedimentary rocks
 sediments
SNBefore 1978, also search composition AND dolomitic.
dolomitic limestone  search
BTsedimentary rocks
 .carbonate rocks
 ..limestone
 ...dolomitic limestone
UFmagnesian limestone
RTdolomite
 dolomitization
 dolostone
SNAdded to Thesaurus in 1981.
dolomitite  search
USEdolostone
dolomitization  search
BTcarbonatization
 .dolomitization
RTsedimentation
 processes
 sedimentary rocks
 metasomatism
 limestone
 diagenesis
 sediments
 dolomite
 calcitization
 dedolomitization
 dolostone
 dolomitic composition
 dolomitic limestone
Dolores County Colorado  search
BTUnited States
 .Colorado
 ..Dolores County Colorado
dolostone  search
BTsedimentary rocks
 .carbonate rocks
 ..dolostone
UFdolomitite
RTdolomite
 dolomitization
 carbonate sediments
 dolomitic composition
 dolomitic limestone
 dolostone deposits
SNTo be used for rocks made of dolomite (mineral). As of 1981, use dolostone deposits for dolostone as a commodity. For sediments, use carbonate sediments; dolomitic composition. Before 1976, also search dolomite for the rock, sediment and commodity.
dolostone deposits  search
RTdolomitic composition
 dolostone
 limestone deposits
 marble deposits
SNCommodity. See List C.
domain structure  search
SNAs of 1981, no longer a valid term for GeoRef. See magnetic domains or crystal structure.
domains  search
RTfacies
 magnetic domains
 sedimentary petrology
SNUsed as a general term.
Domerian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Jurassic
 ....Lower Jurassic
 .....middle Liassic
 ......Domerian
SNEurope.
domes  search
RTanticlines
 arches
 batholiths
 diapirs
 folds
 geomorphology
 intrusions
 laccoliths
 morphostructures
 resurgence
 salt domes
 swells
 uplifts
 volcanoes
SNIndexed with folds as applicable.
Dominica  search
BTCaribbean region
 .West Indies
 ..Antilles
 ...Lesser Antilles
 ....Dominica
SNIsland between Guadeloupe and Martinique in the Lesser Antilles. Added to Thesaurus in 1981.
Dominican Republic  search
BTspaniola
 .Dominican Republic
NTSanto Domingo Dominican Republic
RTCentral Cordillera
SNOccupies eastern two thirds of island of Hispaniola in the Greater Antilles.
Don Basin  search
RTDon River
 Russian Federation
SNRiver basin in central S and S Russian Federation. Before 1978, also search Don. May also occur in other locations. Indexed with countries as applicable.
Don Juan Pond  search
BTAntarctica
 .Don Juan Pond
RTVictoria Land
 Wright Valley
SNIn Wright Valley on W shore of Ross Sea near Ross Ice Sheet in N Victoria Land.
Don River  search
RTDon Basin
 Rostov-na-Donu Russian Federation
 Russian Federation
SNRises SE of Tula and flows SE into a big bend near the Volga River then flows SW into the Azov Sea at Rostov. Before 1978, also search Don. Also in other locations. Search in combination with Russian Federation. Indexed with country as applicable.
Dona Ana County New Mexico  search
BTUnited States
 .New Mexico
 ..Dona Ana County New Mexico
NTKilbourne Hole
 Las Cruces New Mexico
RTHueco Bolson
 Jornada del Muerto
 Orogrande Basin
 San Andres Mountains
 White Sands
SNSW New Mexico.
Donau River  search
USEDanube River
Donbas  search
USEDonets Basin
Donbass  search
USEDonets Basin
Donegal Ireland  search
BTEurope
 .Western Europe
 ..Ireland
 ...Donegal Ireland
NTArdara Pluton
 Rosses Granite
RTBallachulish Complex
SNCounty W of Northern Ireland in N Ireland.
Donets Basin  search
BTEurope
 .Donets Basin
BTCommonwealth of Independent States
 .Donets Basin
UFDonbas
 Donbass
RTRussian Federation
 Ukraine
 Dnieper-Donets Basin
 Gorlovka Basin
 Novorayskoe Formation
 Protopivskaya Formation
SNIndustrial region in plain of Donets River primarily in E Ukraine. Also search Donets. This term has multiple hierarchies. Indexed with former Soviet republics as applicable.
Dong Hai  search
USEEast China Sea
Dongpu Depression  search
BTAsia
 .Far East
 ..China
 ...Dongpu Depression
RTShandong China
 Henan China
 Bohai Bay
SNSubbasin of the Bohai Basin located in NE Henan and SW Shandong. Added to Thesaurus in 1989.
Doniphan County Kansas  search
BTUnited States
 .Kansas
 ..Doniphan County Kansas
SNExtreme NE Kansas.
Donjek Glacier  search
BTCanada
 .Western Canada
 ..Yukon Territory
 ...Donjek Glacier
SNIn SW Yukon Territory.
Donjek River  search
BTCanada
 .Western Canada
 ..Yukon Territory
 ...Donjek River
SNIn SW Yukon Territory.
Donley County Texas  search
BTUnited States
 .Texas
 ..Donley County Texas
Dooly County Georgia  search
BTUnited States
 .Georgia
 ..Dooly County Georgia
Door County Wisconsin  search
BTUnited States
 .Wisconsin
 ..Door County Wisconsin
SNNE Wisconsin, on Door Peninsula.
Door Peninsula  search
BTUnited States
 .Wisconsin
 ..Door Peninsula
SNE Wisconsin, between Green Bay and Lake Michigan. Includes Door and Kewaunee counties, and parts of Brown and Manitowoc counties. Indexed with counties as applicable.
Doornik Belgium  search
USETournai Belgium
Dopp  search
Doppler effect  search
UFDoppler shift
RTacoustical methods
 geophysical methods
 remote sensing
 seismic methods
 geodesy
 satellite methods
 electromagnetic waves
 radar methods
 gravity methods
 frequency
 laser methods
 navigation
 wavelength
SNAlso index specific geophysical methods such as laser methods.
Doppler shift  search
USEDoppler effect
Dora Maira Massif  search
BTEurope
 .Southern Europe
 ..Italy
 ...Piemonte Italy
 ....Dora Maira Massif
BTEurope
 .Western Europe
 ..Cottian Alps
 ...Dora Maira Massif
BTEurope
 .Alps
 ..Piedmont Alps
 ...Dora Maira Massif
SNCottian Alps, W of Turin, NW Italy. This term has multiple hierarchies.
Dorchester County Maryland  search
BTUnited States
 .Maryland
 ..Dorchester County Maryland
SNE Maryland.
Dorchester County Quebec  search
BTCanada
 .Eastern Canada
 ..Quebec
 ...Dorchester County Quebec
SNS Quebec. Before 1978, also search Dorchester and Quebec.
Dorchester County South Carolina  search
BTUnited States
 .South Carolina
 ..Dorchester County South Carolina
SNSE central South Carolina.
Dordogne France  search
BTEurope
 .Western Europe
 ..France
 ...Dordogne France
NTLes Eyzies region
 Perigord
Dore Lake Complex  search
BTCanada
 .Eastern Canada
 ..Quebec
 ...Dore Lake Complex
RTPrecambrian
Dorog Basin  search
BTngary
 .Dorog Basin
Dorog Hungary  search
BTngary
 .Dorog Hungary
SNTown NW of Budapest in N Hungary.
Dorpat Estonia  search
USETartu Estonia
Dorset England  search
BTEurope
 .Western Europe
 ..United Kingdom
 ...Great Britain
 ....England
 .....Dorset England
NTChesil Beach England
UFDorsetshire England
SNCounty on the English Channel.
Dorsetshire England  search
USEDorset England
dosimetry  search
UFradiation dosimetry
RTspectroscopy
 chemical analysis
 instruments
 measurement
 well-logging
 geophysical methods
 radioactivity
 background radiation
 electromagnetic radiation
 radon emanometry
 infrared spectra
 radioactivity methods
 ultraviolet spectra
 X-ray spectra
SNRestricted to radioactivity applications. Added to Thesaurus in 1995.
double refraction  search
USEbirefringence
double-refracting spar  search
USEIceland spar
Doubs France  search
BTEurope
 .Western Europe
 ..France
 ...Doubs France
NTBesancon France
RTJura Mountains
 Franche-Comte
SNDepartment in E France.
Dougherty County Georgia  search
BTUnited States
 .Georgia
 ..Dougherty County Georgia
Douglas County Colorado  search
BTUnited States
 .Colorado
 ..Douglas County Colorado
SNCentral Colorado.
Douglas County Georgia  search
BTUnited States
 .Georgia
 ..Douglas County Georgia
SNNW central Georgia.
Douglas County Illinois  search
BTUnited States
 .Illinois
 ..Douglas County Illinois
SNE central Illinois.
Douglas County Kansas  search
BTUnited States
 .Kansas
 ..Douglas County Kansas
SNE Kansas.
Douglas County Minnesota  search
BTUnited States
 .Minnesota
 ..Douglas County Minnesota
SNW Minnesota.
Douglas County Missouri  search
BTUnited States
 .Missouri
 ..Douglas County Missouri
SNS Missouri.
Douglas County Nebraska  search
BTUnited States
 .Nebraska
 ..Douglas County Nebraska
SNE Nebraska.
Douglas County Nevada  search
BTUnited States
 .Nevada
 ..Douglas County Nevada
RTCarson River
 Lake Tahoe
SNW Nevada.
Douglas County Oregon  search
BTUnited States
 .Oregon
 ..Douglas County Oregon
NTRiddle Oregon
SNSW Oregon.
Douglas County South Dakota  search
BTUnited States
 .South Dakota
 ..Douglas County South Dakota
SNSE South Dakota.
Douglas County Washington  search
BTUnited States
 .Washington
 ..Douglas County Washington
SNCentral Washington.
Douglas County Wisconsin  search
BTUnited States
 .Wisconsin
 ..Douglas County Wisconsin
SNExtreme NW Wisconsin.
Douglas Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Pennsylvanian
 .....Upper Pennsylvanian
 ......Virgilian
 .......Douglas Group
RTIowa
 Missouri
 Nebraska
 Kansas
 Lawrence Formation
SNIncludes Stranger Formation, and Lawrence Formation. SW Iowa, E Kansas, NW Missouri, and SE Nebraska.
Douro River  search
USEDuero River
Doushantuo Formation  search
BTChronostratigraphic Units
 .Precambrian
 ..Proterozoic
 ...Sinian
 ....Doushantuo Formation
RTChina
 Hubei China
SNHubei, South-Central China. Added to Thesaurus in 1989.
down hole  search
USEdownhole methods
down-hole methods  search
USEdownhole methods
downhole methods  search
UFdown hole
 down-hole methods
RTwell-logging
 methods
 boreholes
 Formation MicroScanner
 geothermal energy
 geochemical logging
 measurement-while-drilling
SNAdded to Thesaurus in 1985.
Downtonian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Downtonian
RTSilurian
 Devonian
 Lower Devonian
 Upper Silurian
 Old Red Sandstone
SNIn Old Red Sandstone, England. Uppermost Silurian or lowermost Devonian; Schmidt, l960--lowermost Gedinnian (Lower Devonian).
downwelling  search
UFsinking (currents)
RToceanography
 convection
 ocean circulation
 subduction
 upwelling
 ocean currents
 subsidence
SNFor convection/thermal subsidence also use subsidence if applicable. Added to Thesaurus in 1998.
Drac Valley  search
BTEurope
 .Western Europe
 ..France
 ...Drac Valley
SNRiver valley in SE France.
drag folds  search
BTfolds
 .drag folds
RTfaults
 orientation
 displacements
SNBefore 1978, also search drag AND folds.
drainage  search
RTacid mine drainage
 culverts
 drainage basins
 drainage patterns
 DRAINMOD
 dredging
 geomembranes
 geotextiles
 ground water
 imbibition
 lakes
 lysimeters
 mine dewatering
 mine drainage
 seepage
 soils
 trenching
 underground channels
 water
 water regimes
drainage basins  search
UFbasins, drainage
 catchments
 feeding ground
RTdrainage
 geomorphology
 fluvial features
 atmospheric precipitation
 rivers
 rivers and streams
 basins
 basin management
 valleys
 catchment hydrodynamics
 water balance
 drainage patterns
 poljes
 representative basins
 tributaries
 water yield
 watersheds
SNBefore 1993, also search river basins if applicable. Indexed with fluvial features for geomorphologic studies.
drainage changes  search
SNA valid term through 1974. After 1974, see landform evolution and fluvial features.
drainage divides  search
SNNot a valid term for GeoRef. See watersheds or drainage basins (catchments).
drainage networks  search
USEdrainage patterns
drainage patterns  search
UFdrainage networks
RTglacial geology
 drainage
 geomorphology
 fluvial features
 segmentation
 drainage basins
 rivers
 streams
 patterns
 tributaries
 stream order
 trees
SNIndexed with fluvial features as applicable.
DRAINMOD  search
RTdrainage
 hydrologic cycle
 hydrology
 infiltration
 models
 runoff
 simulation
 unsaturated zone
 water table
SNWater management simulation model.
Drake Passage  search
UFDrake Strait
RTSouth Atlantic
 Antarctic Ocean
 Southeast Pacific
 DSDP Site 326
 Leg 36
 Scotia Sea
SNStrait between Cape Horn and South Shetland Islands N of Antarctica. Indexed with ocean areas as applicable.
Drake Strait  search
USEDrake Passage
Drammen Norway  search
BTEurope
 .Western Europe
 ..Scandinavia
 ...Norway
 ....Drammen Norway
SNCity on a branch of Oslo Fjord in S Norway.
drape folding  search
USEdrape folds
drape folds  search
BTfolds
 .drape folds
UFdrape folding
DRASTIC  search
RTaquifer vulnerability
 ground water
 mathematical methods
 pollution
 risk assessment
SNAcronym. Major factors in ground water pollution methodology for pollution potential comparisons in the United States. Added to Thesaurus in 1995.
dravite  search
BTsilicates
 .ring silicates
 ..dravite
RTborosilicates
 schorl
 tourmaline
drawdown  search
RTground water
 hydraulics
 levels
 low water
 mine dewatering
 potentiometric surface
 pumping
 reservoirs
 slug tests
 water use
 water wells
dredge spoils  search
SNNot a valid term for GeoRef. After 1993, see dredged materials.
dredged materials  search
RTdredged samples
 dredging
 mining
 spoils
 tailings
 waste disposal
SNBefore 1993, also search dredge spoils if applicable. Added to Thesaurus in 1993.
dredged samples  search
RTdredged materials
 dredging
 samples
 sampling
SNAdded to Thesaurus in 1985.
dredging  search
UFdeepening
RTmining geology
 ocean floors
 engineering geology
 drainage
 waterways
 construction
 excavations
 tailings
 mining
 siltation
 trenching
 dredged materials
 dredged samples
 spoils
Dresbachian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Cambrian
 ....Upper Cambrian
 .....Dresbachian
SNNorth America. Upper Cambrian, above Albertan and below Franconian. Added to Thesaurus in 1985.
Dresden Bezirk  search
SNNo longer a valid term for GeoRef. District in SE East Germany. Before 1981, search Dresden. See Saxony Germany and Upper Lusatia.
Dresden Germany  search
BTEurope
 .Central Europe
 ..Germany
 ...Saxony Germany
 ....Dresden Germany
SNCity in Saxony, E Germany. As of 1981, Dresden refers to only the city. Before 1981, it also included the East German district.
Drew County Arkansas  search
BTUnited States
 .Arkansas
 ..Drew County Arkansas
drift  search
BTsediments
 .clastic sediments
 ..drift
UFdrift deposits
 glacial drift
RTglacial geology
 fluvial features
 terrigenous materials
 till
 glacial features
 buried channels
 buried valleys
 loess
 glacial transport
 glaciofluvial sedimentation
 moraines
SNBefore 1971, also search glacial deposits.
drift deposits  search
USEdrift
drill cores  search
USEcores
drill cuttings  search
USEcuttings
drill holes  search
USEboreholes
drill stem tests  search
UFdrill-stem tests
 drillstem tests
 DST (drill stem tests)
RTpetroleum engineering
 formation evaluation
 testing
SNInvolve temporary completion of a well to project its productivity. Abbreviated DST. Also search formation testing if applicable.
drill-stem tests  search
USEdrill stem tests
drilling  search
NTdeep drilling
 horizontal drilling
 marine drilling
RTblowouts
 borehole breakouts
 boreholes
 Continental Scientific Drilling Program
 drilling muds
 engineering geology
 measurement-while-drilling
 petroleum
 petroleum engineering
 sand equivalent tests
 sludge
 trenching
 well-logging
SNUsed for the process.
drilling fluids  search
USEdrilling muds
drilling muds  search
UFdrilling fluids
RTpetroleum engineering
 well-logging
 clay
 drilling
 borehole breakouts
 boreholes
 mud
SNBefore 1998, also search drilling and mud.
drillstem tests  search
USEdrill stem tests
drinking water  search
RTbottling
 decontamination
 desalinization
 fresh water
 ground water
 impurities
 potability
 purification
 Safe Drinking Water Act
 surface water
 water
 water quality
 water resources
 water supply
 wellhead protection
SNAdded to Thesaurus in 1983.
Drome France  search
BTEurope
 .Western Europe
 ..France
 ...Drome France
NTBaronnies
 Diois
 Valence France
RTVercors
SNDepartment in SE France.
Dronning Maud Land  search
USEQueen Maud Land
droplets  search
RTclouds
 meteorology
 raindrops
 water
dropstone  search
USEargillite
drought  search
RTatmospheric precipitation
 climate
 environmental geology
 hydrology
 rainfall
 water balance
 water resources
 water supply
SNAdded to Thesaurus in 1982.
Drum Mountains  search
BTUnited States
 .Utah
 ..Drum Mountains
RTMillard County Utah
 Juab County Utah
SNW central Utah. Indexed with counties and mountains as applicable. Added to Thesaurus in 1985.
Drumheller Alberta  search
BTCanada
 .Western Canada
 ..Alberta
 ...Drumheller Alberta
SNCity in S Alberta.
Drumian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Cambrian
 ....Series 3
 .....Drumian
drumlins  search
BTglacial features
 .drumlins
RTglacial geology
 till
 moraines
Drummond County Quebec  search
BTCanada
 .Eastern Canada
 ..Quebec
 ...Drummond County Quebec
Dry Branch Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Eocene
 .....upper Eocene
 ......Dry Branch Formation
RTSouth Carolina
 Georgia
 DSDP Site 603
 Twiggs Clay
SNIncludes Twiggs Clay and Griffins Landing Member. Added to Thesaurus in 1989.
dry delta  search
USEalluvial fans
dry hot rocks  search
USEhot dry rocks
Dry Tortugas  search
BTUnited States
 .Florida
 ..Monroe County Florida
 ...Dry Tortugas
RTGulf of Mexico
SNIsland group at W end of Florida Keys. Added to Thesaurus in 1985.
Dry Valley Drilling Project  search
BTAntarctica
 .Dry Valley Drilling Project
UFDVDP
RTprograms
SNIn different locations such as Lake Vanda, Lake Vida, New Harbor, Ross Island, and McMurdo Sound off SW Ross Ice Sheet in the Victoria Land area of Ross Dependency.
dry valleys  search
RTerosion features
 fluvial features
 geomorphology
 valleys
SNStreamless valleys. Added to Thesaurus in 1989.
Dryas  search
BTPlantae
 .Spermatophyta
 ..Angiospermae
 ...Dicotyledoneae
 ....Dryas
RTpalynomorphs
 miospores
 Older Dryas
 Oldest Dryas
 Younger Dryas
SNGenus. Before 1978, term also included use for the intervals of late-glacial time.
drying  search
USEdehydration
drynian  search
NTFourchu Group
 George River Group
Dryopithecus  search
BTChordata
 .Vertebrata
 ..Tetrapoda
 ...Mammalia
 ....Theria
 .....Eutheria
 ......Primates
 .......simians
 ........Pongidae
 .........Dryopithecus
RTProconsul
 Sivapithecus
SNSpecies.
DS  search
DSDP  search
USEDeep Sea Drilling Project
DSDP Sit  search
DSDP Site  search
DSDP Site 1  search
BTDeep Sea Drilling Project
 .Leg 1
 ..DSDP Site 1
RTGulf of Mexico
SNSigsbee abyssal plain, Gulf of Mexico.
DSDP Site 10  search
BTDeep Sea Drilling Project
 .Leg 2
 ..DSDP Site 10
RTNorth Atlantic
 Mid-Atlantic Ridge
 Sargasso Sea
SNLower flank, Mid-Atlantic Ridge, Sargasso Sea area, N Atlantic.
DSDP Site 100  search
BTDeep Sea Drilling Project
 .Leg 11
 ..DSDP Site 100
RTBlake-Bahama Outer Ridge
SNBlake-Bahama Outer Ridge, NW Atlantic. Added to Thesaurus in 1993.
DSDP Site 102  search
BTDeep Sea Drilling Project
 .Leg 11
 ..DSDP Site 102
RTBlake-Bahama Outer Ridge
SNBlake-Bahama Outer Ridge, NW Atlantic. Added to Thesaurus in 1993.
DSDP Site 103  search
BTDeep Sea Drilling Project
 .Leg 11
 ..DSDP Site 103
RTBlake-Bahama Outer Ridge
SNBlake-Bahama Outer Ridge, NW Atlantic. Added to Thesaurus in 1993.
DSDP Site 104  search
BTDeep Sea Drilling Project
 .Leg 11
 ..DSDP Site 104
RTBlake-Bahama Outer Ridge
SNBlake-Bahama Outer Ridge, NW Atlantic. Added to Thesaurus in 1993.
DSDP Site 105  search
BTDeep Sea Drilling Project
 .Leg 11
 ..DSDP Site 105
RTNorth Atlantic
SNNW Atlantic Ocean. Added to Thesaurus in 1981.
DSDP Site 108  search
BTDeep Sea Drilling Project
 .Leg 11
 ..DSDP Site 108
RTNorth Atlantic
SNContinental slope off New Jersey, NW Atlantic. Added to Thesaurus in 1993.
DSDP Site 11  search
BTDeep Sea Drilling Project
 .Leg 2
 ..DSDP Site 11
RTNorth Atlantic
 Mid-Atlantic Ridge
SNUpper flank of Mid-Atlantic Ridge, E of Sargasso Sea, N Atlantic.
DSDP Site 111  search
BTDeep Sea Drilling Project
 .Leg 12
 ..DSDP Site 111
RTNorth Atlantic
SNOrphan Knoll, NE of Newfoundland, NW Atlantic. Added to Thesaurus in 1993.
DSDP Site 112  search
BTDeep Sea Drilling Project
 .Leg 12
 ..DSDP Site 112
RTLabrador Sea
SNCentral Labrador Sea, NW Atlantic Ocean. Added to Thesaurus in 1995.
DSDP Site 113  search
BTDeep Sea Drilling Project
 .Leg 12
 ..DSDP Site 113
RTLabrador Sea
SNAxis of Labrador Sea, SW of Greenland.
DSDP Site 114  search
BTDeep Sea Drilling Project
 .Leg 12
 ..DSDP Site 114
RTReykjanes Ridge
SNE flank of Reykjanes Ridge, SW of Iceland.
DSDP Site 115  search
BTDeep Sea Drilling Project
 .Leg 12
 ..DSDP Site 115
RTNorth Atlantic
SNBasin E of Reykjanes Ridge, S of Iceland.
DSDP Site 116  search
BTDeep Sea Drilling Project
 .Leg 12
 ..DSDP Site 116
RTRockall Plateau
SNRockall Plateau, NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 117  search
BTDeep Sea Drilling Project
 .Leg 12
 ..DSDP Site 117
RTRockall Plateau
 Rockall Bank
SNW Rockall Bank, near margin of Hatton-Rockall Basin, NE Atlantic. Added to Thesaurus in 1993.
DSDP Site 118  search
BTDeep Sea Drilling Project
 .Leg 12
 ..DSDP Site 118
RTNorth Atlantic
 Bay of Biscay
SNW Biscay abyssal plain, NE Atlantic.
DSDP Site 119  search
BTDeep Sea Drilling Project
 .Leg 12
 ..DSDP Site 119
RTCantabria Seamount
SNCantabria Seamount, W Bay of Biscay, off the N coast of Spain. Added to Thesaurus in 1989.
DSDP Site 12  search
BTDeep Sea Drilling Project
 .Leg 2
 ..DSDP Site 12
RTCape Verde Basin
SNCentral Cape Verde Basin, NE Atlantic.
DSDP Site 120  search
BTDeep Sea Drilling Project
 .Leg 13
 ..DSDP Site 120
RTNorth Atlantic
 Gorringe Bank
SNNE Atlantic, near Strait of Gibraltar. Added to Thesaurus in 1985.
DSDP Site 121  search
BTDeep Sea Drilling Project
 .Leg 13
 ..DSDP Site 121
RTAlboran Sea
 West Mediterranean
SNW Mediterranean Sea. Added to Thesaurus in 1985.
DSDP Site 122  search
BTDeep Sea Drilling Project
 .Leg 13
 ..DSDP Site 122
RTWest Mediterranean
 Valencia Trough
SNW Mediterranean Sea. Added to Thesaurus in 1985.
DSDP Site 123  search
BTDeep Sea Drilling Project
 .Leg 13
 ..DSDP Site 123
RTWest Mediterranean
SNW Mediterranean Sea. Added to Thesaurus in 1985.
DSDP Site 124  search
BTDeep Sea Drilling Project
 .Leg 13
 ..DSDP Site 124
RTWest Mediterranean
 Balearic Basin
SNW Mediterranean Sea. Added to Thesaurus in 1985.
DSDP Site 125  search
BTDeep Sea Drilling Project
 .Leg 13
 ..DSDP Site 125
RTEast Mediterranean
SNE Mediterranean Sea. Added to Thesaurus in 1981.
DSDP Site 126  search
BTDeep Sea Drilling Project
 .Leg 13
 ..DSDP Site 126
RTEast Mediterranean
 DSDP Site 377
SNSE Mediterranean Sea. Added to Thesaurus in 1985.
DSDP Site 127  search
BTDeep Sea Drilling Project
 .Leg 13
 ..DSDP Site 127
RTEast Mediterranean
 Hellenic Trench
SNE Mediterranean Sea. Added to Thesaurus in 1985.
DSDP Site 128  search
BTDeep Sea Drilling Project
 .Leg 13
 ..DSDP Site 128
RTEast Mediterranean
SNE Mediterranean Sea. Added to Thesaurus in 1985.
DSDP Site 129  search
BTDeep Sea Drilling Project
 .Leg 13
 ..DSDP Site 129
RTEast Mediterranean
 Strabo Trench
SNE Mediterranean Sea. Added to Thesaurus in 1985.
DSDP Site 13  search
BTDeep Sea Drilling Project
 .Leg 3
 ..DSDP Site 13
RTSierra Leone Rise
SNSierra Leone Rise, NE Equatorial Atlantic.
DSDP Site 130  search
BTDeep Sea Drilling Project
 .Leg 13
 ..DSDP Site 130
RTEast Mediterranean
SNLevantine Basin, SE Mediterranean Sea. Added to Thesaurus in 1985.
DSDP Site 131  search
BTDeep Sea Drilling Project
 .Leg 13
 ..DSDP Site 131
RTEast Mediterranean
 Nile Delta
SNNile cone region, Mediterranean Sea. Added to Thesaurus in 1989.
DSDP Site 132  search
BTDeep Sea Drilling Project
 .Leg 13
 ..DSDP Site 132
RTTyrrhenian Sea
 ODP Site 653
 Tyrrhenian Basin
SNTyrrhenian Basin, Mediterranean Sea. Added to Thesaurus in 1981.
DSDP Site 133  search
BTDeep Sea Drilling Project
 .Leg 13
 ..DSDP Site 133
RTWest Mediterranean
 Balearic Basin
SNW Mediterranean Sea. Added to Thesaurus in 1985.
DSDP Site 134  search
BTDeep Sea Drilling Project
 .Leg 13
 ..DSDP Site 134
RTWest Mediterranean
 Balearic Basin
SNW Mediterranean Sea. Added to Thesaurus in 1985.
DSDP Site 135  search
BTDeep Sea Drilling Project
 .Leg 14
 ..DSDP Site 135
RTNorth Atlantic
SNSE of Horseshoe Plain, NE Atlantic. Added to Thesaurus in 1995.
DSDP Site 136  search
BTDeep Sea Drilling Project
 .Leg 14
 ..DSDP Site 136
RTNorth Atlantic
SNAbyssal hills, NE Atlantic.
DSDP Site 137  search
BTDeep Sea Drilling Project
 .Leg 14
 ..DSDP Site 137
RTCape Verde Basin
SNAbyssal hills in Cape Verde Basin, NE Atlantic, near the foot of the continental rise about 1000 km W of Cap Blanc, W Africa. Added to Thesaurus in 1989.
DSDP Site 138  search
BTDeep Sea Drilling Project
 .Leg 14
 ..DSDP Site 138
RTCape Verde Basin
SNAbyssal hills in Cape Verde Basin, NE Atlantic.
DSDP Site 139  search
BTDeep Sea Drilling Project
 .Leg 14
 ..DSDP Site 139
RTCape Verde Basin
SNMid-continental rise W of Cap Blanc, Cape Verde Basin, NE Atlantic.
DSDP Site 14  search
BTDeep Sea Drilling Project
 .Leg 3
 ..DSDP Site 14
RTSouth Atlantic
 Mid-Atlantic Ridge
SNW flank of S Mid-Atlantic Ridge.
DSDP Site 140  search
BTDeep Sea Drilling Project
 .Leg 14
 ..DSDP Site 140
RTCape Verde Basin
SNFoot of continental rise, about 450 km W of Cap Blanc, Cape Verde Basin, NE Atlantic.
DSDP Site 141  search
BTDeep Sea Drilling Project
 .Leg 14
 ..DSDP Site 141
RTNorth Atlantic
SNLower continental rise, about 200 km N of Cape Verde Islands in NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 142  search
BTDeep Sea Drilling Project
 .Leg 14
 ..DSDP Site 142
RTNorth Atlantic
 Equatorial Atlantic
SNCeara abyssal plain, about 700 km NE of the Amazon Delta, NW Equatorial Atlantic.
DSDP Site 143  search
BTDeep Sea Drilling Project
 .Leg 14
 ..DSDP Site 143
RTNorth Atlantic
 Equatorial Atlantic
SNAbout 400 km N of Surinam, N flank of Demerara Rise, NW Equatorial Atlantic.
DSDP Site 144  search
BTDeep Sea Drilling Project
 .Leg 14
 ..DSDP Site 144
RTNorth Atlantic
 Equatorial Atlantic
SNAbout 400 km N of Surinam, N flank of Demerara Rise, NW Equatorial Atlantic.
DSDP Site 146  search
BTDeep Sea Drilling Project
 .Leg 15
 ..DSDP Site 146
RTCaribbean Sea
SNE Caribbean Sea. Added to Thesaurus in 1985.
DSDP Site 147  search
BTDeep Sea Drilling Project
 .Leg 15
 ..DSDP Site 147
RTCaribbean Sea
 ODP Site 1002
SNE Caribbean Sea. Added to Thesaurus in 1985.
DSDP Site 148  search
BTDeep Sea Drilling Project
 .Leg 15
 ..DSDP Site 148
RTCaribbean Sea
SNE Caribbean Sea. Added to Thesaurus in 1985.
DSDP Site 149  search
BTDeep Sea Drilling Project
 .Leg 15
 ..DSDP Site 149
RTCaribbean Sea
SNE Caribbean Sea. Added to Thesaurus in 1985.
DSDP Site 15  search
BTDeep Sea Drilling Project
 .Leg 3
 ..DSDP Site 15
RTSouth Atlantic
 Mid-Atlantic Ridge
SNW flank of S Mid-Atlantic Ridge.
DSDP Site 150  search
BTDeep Sea Drilling Project
 .Leg 15
 ..DSDP Site 150
RTCaribbean Sea
SNE Caribbean Sea. Added to Thesaurus in 1985.
DSDP Site 151  search
BTDeep Sea Drilling Project
 .Leg 15
 ..DSDP Site 151
RTCaribbean Sea
SNCentral Caribbean Sea. Added to Thesaurus in 1985.
DSDP Site 152  search
BTDeep Sea Drilling Project
 .Leg 15
 ..DSDP Site 152
RTCaribbean Sea
SNCentral Caribbean Sea. Added to Thesaurus in 1985.
DSDP Site 153  search
BTDeep Sea Drilling Project
 .Leg 15
 ..DSDP Site 153
RTCaribbean Sea
SNE Caribbean Sea. Added to Thesaurus in 1985.
DSDP Site 154  search
BTDeep Sea Drilling Project
 .Leg 15
 ..DSDP Site 154
RTCaribbean Sea
SNW Caribbean Sea. Added to Thesaurus in 1985.
DSDP Site 155  search
BTDeep Sea Drilling Project
 .Leg 16
 ..DSDP Site 155
RTNortheast Pacific
 Equatorial Pacific
SNCoiba Ridge, off W Panama, E Equatorial Pacific.
DSDP Site 156  search
BTDeep Sea Drilling Project
 .Leg 16
 ..DSDP Site 156
RTCarnegie Ridge
SNCarnegie Ridge, off W Ecuador, E Equatorial Pacific.
DSDP Site 157  search
BTDeep Sea Drilling Project
 .Leg 16
 ..DSDP Site 157
RTSoutheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific. Added to Thesaurus in 1981.
DSDP Site 158  search
BTDeep Sea Drilling Project
 .Leg 16
 ..DSDP Site 158
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific. Added to Thesaurus in 1981.
DSDP Site 159  search
BTDeep Sea Drilling Project
 .Leg 16
 ..DSDP Site 159
RTNortheast Pacific
 Equatorial Pacific
 East Pacific Rise
SNEast Pacific Rise, E Equatorial Pacific. Added to Thesaurus in 1989.
DSDP Site 16  search
BTDeep Sea Drilling Project
 .Leg 3
 ..DSDP Site 16
RTSouth Atlantic
 Mid-Atlantic Ridge
SNW flank of S Mid-Atlantic Ridge.
DSDP Site 160  search
BTDeep Sea Drilling Project
 .Leg 16
 ..DSDP Site 160
RTNortheast Pacific
 Equatorial Pacific
 East Pacific Rise
SNEast Pacific Rise, E Equatorial Pacific. Added to Thesaurus in 1995.
DSDP Site 161  search
BTDeep Sea Drilling Project
 .Leg 16
 ..DSDP Site 161
RTNortheast Pacific
 Equatorial Pacific
SNN of Clipperton fracture zone and S of Clarion fracture zone, E Equatorial Pacific.
DSDP Site 162  search
BTDeep Sea Drilling Project
 .Leg 16
 ..DSDP Site 162
RTNortheast Pacific
 Equatorial Pacific
 East Pacific Rise
SNEast Pacific Rise, E Equatorial Pacific. Added to Thesaurus in 1995.
DSDP Site 163  search
BTDeep Sea Drilling Project
 .Leg 16
 ..DSDP Site 163
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific. Added to Thesaurus in 1981.
DSDP Site 164  search
BTDeep Sea Drilling Project
 .Leg 17
 ..DSDP Site 164
RTNortheast Pacific
 Equatorial Pacific
SNN of extension of Clarion fracture zone, between Line Islands and Hawaii, NE Equatorial Pacific.
DSDP Site 165  search
BTDeep Sea Drilling Project
 .Leg 17
 ..DSDP Site 165
RTNortheast Pacific
 Equatorial Pacific
SNW of Line Islands, NE Equatorial Pacific.
DSDP Site 166  search
BTDeep Sea Drilling Project
 .Leg 17
 ..DSDP Site 166
RTNortheast Pacific
 Equatorial Pacific
SNSE of Magellan Rise about 400 km NE of Howland Island, in central Equatorial Pacific.
DSDP Site 167  search
BTDeep Sea Drilling Project
 .Leg 17
 ..DSDP Site 167
RTNortheast Pacific
 Equatorial Pacific
SNOn Magellan Rise in central Equatorial Pacific. Added to Thesaurus in 1981.
DSDP Site 168  search
BTDeep Sea Drilling Project
 .Leg 17
 ..DSDP Site 168
RTNorthwest Pacific
 Equatorial Pacific
 Central Pacific
SNW edge of Central Pacific Basin, E of the Marshall Islands, NW Pacific.
DSDP Site 169  search
BTDeep Sea Drilling Project
 .Leg 17
 ..DSDP Site 169
RTNorthwest Pacific
 Equatorial Pacific
SNW edge of Central Pacific Basin, E of the Marshall Islands, NW Pacific.
DSDP Site 17  search
BTDeep Sea Drilling Project
 .Leg 3
 ..DSDP Site 17
RTSouth Atlantic
 Mid-Atlantic Ridge
SNFlank of S Mid-Atlantic Ridge.
DSDP Site 170  search
BTDeep Sea Drilling Project
 .Leg 17
 ..DSDP Site 170
RTNorthwest Pacific
 Equatorial Pacific
SNNW Central Pacific Basin, E of the Marshall Islands, NW Pacific.
DSDP Site 171  search
BTDeep Sea Drilling Project
 .Leg 17
 ..DSDP Site 171
RTNortheast Pacific
SNHorizon Seamount, NE Pacific. Added to Thesaurus in 1993.
DSDP Site 172  search
BTDeep Sea Drilling Project
 .Leg 18
 ..DSDP Site 172
RTNortheast Pacific
SNNE Pacific. Added to Thesaurus in 1985.
DSDP Site 173  search
BTDeep Sea Drilling Project
 .Leg 18
 ..DSDP Site 173
RTNortheast Pacific
SNNE Pacific. Added to Thesaurus in 1985.
DSDP Site 174  search
BTDeep Sea Drilling Project
 .Leg 18
 ..DSDP Site 174
RTNortheast Pacific
SNNE Pacific. Added to Thesaurus in 1985.
DSDP Site 175  search
BTDeep Sea Drilling Project
 .Leg 18
 ..DSDP Site 175
RTNortheast Pacific
SNNE Pacific. Added to Thesaurus in 1985.
DSDP Site 176  search
BTDeep Sea Drilling Project
 .Leg 18
 ..DSDP Site 176
RTNortheast Pacific
SNNE Pacific. Added to Thesaurus in 1985.
DSDP Site 177  search
BTDeep Sea Drilling Project
 .Leg 18
 ..DSDP Site 177
RTNortheast Pacific
SNNE Pacific. Added to Thesaurus in 1985.
DSDP Site 178  search
BTDeep Sea Drilling Project
 .Leg 18
 ..DSDP Site 178
RTGulf of Alaska
SNGulf of Alaska. Added to Thesaurus in 1985.
DSDP Site 179  search
BTDeep Sea Drilling Project
 .Leg 18
 ..DSDP Site 179
RTGulf of Alaska
SNGulf of Alaska. Added to Thesaurus in 1985.
DSDP Site 18  search
BTDeep Sea Drilling Project
 .Leg 3
 ..DSDP Site 18
RTSouth Atlantic
 Mid-Atlantic Ridge
SNFlank of S Mid-Atlantic Ridge.
DSDP Site 180  search
BTDeep Sea Drilling Project
 .Leg 18
 ..DSDP Site 180
RTGulf of Alaska
SNGulf of Alaska. Added to Thesaurus in 1985.
DSDP Site 181  search
BTDeep Sea Drilling Project
 .Leg 18
 ..DSDP Site 181
RTGulf of Alaska
SNGulf of Alaska. Added to Thesaurus in 1985.
DSDP Site 182  search
BTDeep Sea Drilling Project
 .Leg 18
 ..DSDP Site 182
RTGulf of Alaska
SNGulf of Alaska. Added to Thesaurus in 1985.
DSDP Site 183  search
BTDeep Sea Drilling Project
 .Leg 19
 ..DSDP Site 183
RTAleutian Trench
 Northwest Pacific
SNAleutian abyssal plain, W Pacific Ocean. Drilled to provide information on the geologic history of the Pacific and Kula plates and the formation of the Aleutian Trench. Added to Thesaurus in 1989.
DSDP Site 184  search
BTDeep Sea Drilling Project
 .Leg 19
 ..DSDP Site 184
RTBering Sea
SNUmnak Plateau, E Bering Sea.
DSDP Site 185  search
BTDeep Sea Drilling Project
 .Leg 19
 ..DSDP Site 185
RTBering Sea
SNUmnak Plateau, E Bering Sea.
DSDP Site 186  search
BTDeep Sea Drilling Project
 .Leg 19
 ..DSDP Site 186
RTAleutian Trench
 Northeast Pacific
SNAleutian Terrace-Aleutian Trench, NE Pacific. Added to Thesaurus in 1993.
DSDP Site 187  search
BTDeep Sea Drilling Project
 .Leg 19
 ..DSDP Site 187
RTAleutian Trench
 Bering Sea
SNN wall of Aleutian Trench, S Bering Sea.
DSDP Site 188  search
BTDeep Sea Drilling Project
 .Leg 19
 ..DSDP Site 188
RTBowers Ridge
SNInner flank of Bowers Ridge, S central Bering Sea.
DSDP Site 189  search
BTDeep Sea Drilling Project
 .Leg 19
 ..DSDP Site 189
RTBering Sea
 Aleutian Ridge
SNNear base of Aleutian Ridge, Komandorski Islands area, SW Bering Sea.
DSDP Site 19  search
BTDeep Sea Drilling Project
 .Leg 3
 ..DSDP Site 19
RTBrazil Basin
SNRidge, S edge of Brazil Basin, SW Atlantic. Added to Thesaurus in 1993.
DSDP Site 190  search
BTDeep Sea Drilling Project
 .Leg 19
 ..DSDP Site 190
RTBering Sea
SNW Aleutian Basin, E of Shirshov Ridge, W Bering Sea.
DSDP Site 191  search
BTDeep Sea Drilling Project
 .Leg 19
 ..DSDP Site 191
RTBering Sea
SNKomandorski Basin, Bering Sea. Added to Thesaurus in 1995.
DSDP Site 192  search
BTDeep Sea Drilling Project
 .Leg 19
 ..DSDP Site 192
RTEmperor Seamounts
SNNorthernmost seamount in the Emperor Seamounts, W Pacific. Added to Thesaurus in 1989.
DSDP Site 193  search
BTDeep Sea Drilling Project
 .Leg 19
 ..DSDP Site 193
RTNorthwest Pacific
SNHokkaido Rise, N Northwest Pacific Basin, E of Kamchatka.
DSDP Site 194  search
BTDeep Sea Drilling Project
 .Leg 20
 ..DSDP Site 194
RTNorthwest Pacific
SNNW Pacific Ocean, off Japan. Added to Thesaurus in 1985.
DSDP Site 195  search
BTDeep Sea Drilling Project
 .Leg 20
 ..DSDP Site 195
RTNorthwest Pacific
SNNW Pacific Ocean, off Japan. Added to Thesaurus in 1985.
DSDP Site 196  search
BTDeep Sea Drilling Project
 .Leg 20
 ..DSDP Site 196
RTNorthwest Pacific
SNNW Pacific Ocean. Added to Thesaurus in 1985.
DSDP Site 197  search
BTDeep Sea Drilling Project
 .Leg 20
 ..DSDP Site 197
RTNorthwest Pacific
SNNW Pacific Ocean. Added to Thesaurus in 1985.
DSDP Site 198  search
BTDeep Sea Drilling Project
 .Leg 20
 ..DSDP Site 198
RTNorthwest Pacific
SNNW Pacific Ocean. Added to Thesaurus in 1985.
DSDP Site 199  search
BTDeep Sea Drilling Project
 .Leg 20
 ..DSDP Site 199
RTNorthwest Pacific
 Equatorial Pacific
SNW Equatorial Pacific. Added to Thesaurus in 1985.
DSDP Site 2  search
BTDeep Sea Drilling Project
 .Leg 1
 ..DSDP Site 2
RTGulf of Mexico
SNSigsbee Knolls, central Gulf of Mexico. Added to Thesaurus in 1995.
DSDP Site 20  search
BTDeep Sea Drilling Project
 .Leg 3
 ..DSDP Site 20
RTBrazil Basin
SNValley, S edge of Brazil Basin, SW Atlantic. Added to Thesaurus in 1993.
DSDP Site 200  search
BTDeep Sea Drilling Project
 .Leg 20
 ..DSDP Site 200
RTNorthwest Pacific
 Equatorial Pacific
SNW Equatorial Pacific. Added to Thesaurus in 1985.
DSDP Site 202  search
BTDeep Sea Drilling Project
 .Leg 20
 ..DSDP Site 202
RTNorthwest Pacific
 Equatorial Pacific
SNW Equatorial Pacific. Added to Thesaurus in 1985.
DSDP Site 203  search
BTDeep Sea Drilling Project
 .Leg 21
 ..DSDP Site 203
RTLau Basin
SNLau Basin, SSE of Fiji, SE Pacific.
DSDP Site 204  search
BTDeep Sea Drilling Project
 .Leg 21
 ..DSDP Site 204
RTSouthwest Pacific
SNE of Tonga Trench, SW Pacific.
DSDP Site 205  search
BTDeep Sea Drilling Project
 .Leg 21
 ..DSDP Site 205
RTSouthwest Pacific
SNSouth Fiji Basin, SW Pacific.
DSDP Site 206  search
BTDeep Sea Drilling Project
 .Leg 21
 ..DSDP Site 206
RTSouthwest Pacific
 New Caledonia Basin
SNNew Caledonia Basin, SW Pacific. Added to Thesaurus in 1989.
DSDP Site 207  search
BTDeep Sea Drilling Project
 .Leg 21
 ..DSDP Site 207
RTTasman Sea
 Lord Howe Rise
SNS Lord Howe Rise, Tasman Sea, W Pacific. Added to Thesaurus in 1989.
DSDP Site 208  search
BTDeep Sea Drilling Project
 .Leg 21
 ..DSDP Site 208
RTLord Howe Rise
SNN Lord Howe Rise, SW Pacific. Added to Thesaurus in 1989.
DSDP Site 209  search
BTDeep Sea Drilling Project
 .Leg 21
 ..DSDP Site 209
RTSouthwest Pacific
 Queensland Plateau
SNQueensland Plateau, SW Pacific. Added to Thesaurus in 1993.
DSDP Site 21  search
BTDeep Sea Drilling Project
 .Leg 3
 ..DSDP Site 21
RTBrazil Basin
SNBrazil Basin, SW Atlantic. Added to Thesaurus in 1989.
DSDP Site 210  search
BTDeep Sea Drilling Project
 .Leg 21
 ..DSDP Site 210
RTCoral Sea Basin
SNCoral Sea Basin, SW Pacific. Added to Thesaurus in 1989.
DSDP Site 211  search
BTDeep Sea Drilling Project
 .Leg 22
 ..DSDP Site 211
RTIndian Ocean
SNAbout 130 nautical miles S of the axis of the Java Trench. NE Indian Ocean. Added to Thesaurus in 1989.
DSDP Site 212  search
BTDeep Sea Drilling Project
 .Leg 22
 ..DSDP Site 212
RTWharton Basin
SNWharton Basin, Indian Ocean. Added to Thesaurus in 1989.
DSDP Site 213  search
BTDeep Sea Drilling Project
 .Leg 22
 ..DSDP Site 213
RTIndian Ocean
SNAbout 300 nautical miles E of Ninetyeast Ridge, Indian Ocean. Added to Thesaurus in 1989.
DSDP Site 214  search
BTDeep Sea Drilling Project
 .Leg 22
 ..DSDP Site 214
RTNinetyeast Ridge
SNOn crest of Ninetyeast Ridge, Indian Ocean. Added to Thesaurus in 1981.
DSDP Site 215  search
BTDeep Sea Drilling Project
 .Leg 22
 ..DSDP Site 215
RTIndian Ocean
SNW of Ninetyeast Ridge in E Indian Ocean. Added to Thesaurus in 1989.
DSDP Site 216  search
BTDeep Sea Drilling Project
 .Leg 22
 ..DSDP Site 216
RTNinetyeast Ridge
SNCrest of Ninetyeast Ridge near the Equator in E Indian Ocean. Added to Thesaurus in 1989.
DSDP Site 217  search
BTDeep Sea Drilling Project
 .Leg 22
 ..DSDP Site 217
RTNinetyeast Ridge
SNE flank of Ninetyeast Ridge, E Indian Ocean. Added to Thesaurus in 1989.
DSDP Site 218  search
BTDeep Sea Drilling Project
 .Leg 22
 ..DSDP Site 218
RTBengal Fan
SNCentral Bengal Fan, E Indian Ocean. Added to Thesaurus in 1989.
DSDP Site 219  search
BTDeep Sea Drilling Project
 .Leg 23
 ..DSDP Site 219
RTArabian Sea
SNIn Nine Degree Channel, which lies between Laccadive and Maldive islands in Arabian Sea. Added to Thesaurus in 1989.
DSDP Site 22  search
BTDeep Sea Drilling Project
 .Leg 3
 ..DSDP Site 22
RTRio Grande Rise
SNRio Grande Rise, SW Atlantic.
DSDP Site 220  search
BTDeep Sea Drilling Project
 .Leg 23
 ..DSDP Site 220
RTArabian Sea
SNW Chagos-Laccadive Plateau, Arabian Sea. Added to Thesaurus in 1993.
DSDP Site 221  search
BTDeep Sea Drilling Project
 .Leg 23
 ..DSDP Site 221
RTArabian Sea
SNS end of Arabian abyssal plain, E Arabian Basin, SE Arabian Sea.
DSDP Site 222  search
BTDeep Sea Drilling Project
 .Leg 23
 ..DSDP Site 222
RTArabian Sea
 Indus Fan
SNIndus Fan, N Arabian Sea. Added to Thesaurus in 1995.
DSDP Site 223  search
BTDeep Sea Drilling Project
 .Leg 23
 ..DSDP Site 223
RTArabian Sea
SNN Arabian Sea, W of Owen Ridge. Added to Thesaurus in 1995.
DSDP Site 224  search
BTDeep Sea Drilling Project
 .Leg 23
 ..DSDP Site 224
RTArabian Sea
SNOwen Ridge, N Arabian Sea. Added to Thesaurus in 1995.
DSDP Site 225  search
BTDeep Sea Drilling Project
 .Leg 23
 ..DSDP Site 225
RTRed Sea
SNRed Sea. Added to Thesaurus in 1981.
DSDP Site 226  search
BTDeep Sea Drilling Project
 .Leg 23
 ..DSDP Site 226
RTAtlantis II Deep
SNSW Atlantis II Deep, central Red Sea.
DSDP Site 227  search
BTDeep Sea Drilling Project
 .Leg 23
 ..DSDP Site 227
RTAtlantis II Deep
SNE Atlantis II Deep, Red Sea. Added to Thesaurus in 1981.
DSDP Site 228  search
BTDeep Sea Drilling Project
 .Leg 23
 ..DSDP Site 228
RTRed Sea
SNRed Sea. Added to Thesaurus in 1981.
DSDP Site 229  search
BTDeep Sea Drilling Project
 .Leg 23
 ..DSDP Site 229
RTRed Sea
SNShallow basin S of Zubayir Island, S Red Sea.
DSDP Site 23  search
BTDeep Sea Drilling Project
 .Leg 4
 ..DSDP Site 23
RTSouth Atlantic
 Brazil Basin
 Equatorial Atlantic
SNN Brazil Basin, SW Equatorial Atlantic.
DSDP Site 230  search
BTDeep Sea Drilling Project
 .Leg 23
 ..DSDP Site 230
RTRed Sea
SNW side of axial basin W of Zubayir Island, S Red Sea.
DSDP Site 231  search
BTDeep Sea Drilling Project
 .Leg 24
 ..DSDP Site 231
RTGulf of Aden
SNS Gulf of Aden, Indian Ocean. Added to Thesaurus in 1993.
DSDP Site 232  search
BTDeep Sea Drilling Project
 .Leg 24
 ..DSDP Site 232
RTGulf of Aden
SNIllaue-Fartak Trench, E Gulf of Aden, Arabian Sea. Before 1982, also search Site 232 AND Deep Sea Drilling Project. Added to Thesaurus in 1993.
DSDP Site 233  search
BTDeep Sea Drilling Project
 .Leg 24
 ..DSDP Site 233
RTGulf of Aden
SNIllaue-Fartak Trench, E Gulf of Aden, Arabian Sea. Added to Thesaurus in 1993.
DSDP Site 234  search
BTDeep Sea Drilling Project
 .Leg 24
 ..DSDP Site 234
RTSomali Basin
SNW Somali Basin near the Somali continental margin, W Indian Ocean.
DSDP Site 235  search
BTDeep Sea Drilling Project
 .Leg 24
 ..DSDP Site 235
RTSomali Basin
SNSomali Basin on an abyssal plain near the end of Chain Ridge, W Indian Ocean.
DSDP Site 236  search
BTDeep Sea Drilling Project
 .Leg 24
 ..DSDP Site 236
RTSomali Basin
SNSomali Basin between Carlsberg Ridge and Seychelles Bank, W Indian Ocean. Added to Thesaurus in 1993.
DSDP Site 237  search
BTDeep Sea Drilling Project
 .Leg 24
 ..DSDP Site 237
RTIndian Ocean
 ODP Site 707
SNMascarene Plateau, W Indian Ocean. Added to Thesaurus in 1989.
DSDP Site 238  search
BTDeep Sea Drilling Project
 .Leg 24
 ..DSDP Site 238
RTIndian Ocean
SNExtreme NE Argo fracture zone, W Indian Ocean. Added to Thesaurus in 1989.
DSDP Site 239  search
BTDeep Sea Drilling Project
 .Leg 25
 ..DSDP Site 239
RTMascarene Basin
SNW Mascarene Basin, W Indian Ocean.
DSDP Site 24  search
BTDeep Sea Drilling Project
 .Leg 4
 ..DSDP Site 24
RTSouth Atlantic
 Brazil Basin
 Equatorial Atlantic
SNN Brazil Basin, SW Equatorial Atlantic.
DSDP Site 240  search
BTDeep Sea Drilling Project
 .Leg 25
 ..DSDP Site 240
RTSomali Basin
SNSW Somali Basin, W Indian Ocean.
DSDP Site 241  search
BTDeep Sea Drilling Project
 .Leg 25
 ..DSDP Site 241
RTIndian Ocean
SNEast African continental rise, W Indian Ocean. Added to Thesaurus in 1989.
DSDP Site 242  search
BTDeep Sea Drilling Project
 .Leg 25
 ..DSDP Site 242
RTMozambique Channel
SNDavie Ridge, N Mozambique Channel, W Indian Ocean.
DSDP Site 243  search
BTDeep Sea Drilling Project
 .Leg 25
 ..DSDP Site 243
RTMozambique Channel
SNZambesi Canyon, S Mozambique Channel, W Indian Ocean.
DSDP Site 244  search
BTDeep Sea Drilling Project
 .Leg 25
 ..DSDP Site 244
RTMozambique Channel
SNZambesi Canyon, S Mozambique Channel , W Indian Ocean. Site abandoned after retrieving core catcher sample.
DSDP Site 245  search
BTDeep Sea Drilling Project
 .Leg 25
 ..DSDP Site 245
RTMadagascar Basin
SNS Madagascar Basin, W Indian Ocean. Added to Thesaurus in 1989.
DSDP Site 246  search
BTDeep Sea Drilling Project
 .Leg 25
 ..DSDP Site 246
RTIndian Ocean
SNMadagascar Plateau, SW Indian Ocean.
DSDP Site 247  search
BTDeep Sea Drilling Project
 .Leg 25
 ..DSDP Site 247
RTIndian Ocean
SNMadagascar Plateau, SW Indian Ocean. Only a core catcher sample was recovered.
DSDP Site 248  search
BTDeep Sea Drilling Project
 .Leg 25
 ..DSDP Site 248
RTIndian Ocean
SNMozambique Basin, SW Indian Ocean. Added to Thesaurus in 1993.
DSDP Site 249  search
BTDeep Sea Drilling Project
 .Leg 25
 ..DSDP Site 249
RTIndian Ocean
SNMozambique Plateau, W Indian Ocean. Added to Thesaurus in 1995.
DSDP Site 25  search
BTDeep Sea Drilling Project
 .Leg 4
 ..DSDP Site 25
RTSouth Atlantic
 Equatorial Atlantic
SNNear base of NE Brazil continental slope, Equatorial Atlantic.
DSDP Site 250  search
BTDeep Sea Drilling Project
 .Leg 26
 ..DSDP Site 250
RTIndian Ocean
SNSE Mozambique Basin, W Indian Ocean.
DSDP Site 251  search
BTDeep Sea Drilling Project
 .Leg 26
 ..DSDP Site 251
RTMid-Indian Ridge
SNMid-Indian Ridge, SW Indian Ocean. Added to Thesaurus in 1989.
DSDP Site 252  search
BTDeep Sea Drilling Project
 .Leg 26
 ..DSDP Site 252
RTIndian Ocean
SNCrozet Basin, SW Indian Ocean.
DSDP Site 253  search
BTDeep Sea Drilling Project
 .Leg 26
 ..DSDP Site 253
RTNinetyeast Ridge
SNNinetyeast Ridge, SE Indian Ocean. Added to Thesaurus in 1981.
DSDP Site 254  search
BTDeep Sea Drilling Project
 .Leg 26
 ..DSDP Site 254
RTNinetyeast Ridge
SNNinetyeast Ridge, SE Indian Ocean. Added to Thesaurus in 1981.
DSDP Site 255  search
BTDeep Sea Drilling Project
 .Leg 26
 ..DSDP Site 255
RTIndian Ocean
 Broken Ridge
SNS Broken Ridge, SE Indian Ocean. Added to Thesaurus in 1993.
DSDP Site 256  search
BTDeep Sea Drilling Project
 .Leg 26
 ..DSDP Site 256
RTWharton Basin
SNS Wharton Basin, E Indian Ocean. Added to Thesaurus in 1989.
DSDP Site 257  search
BTDeep Sea Drilling Project
 .Leg 26
 ..DSDP Site 257
RTWharton Basin
SNSE Wharton Basin, E Indian Ocean. Added to Thesaurus in 1989.
DSDP Site 258  search
BTDeep Sea Drilling Project
 .Leg 26
 ..DSDP Site 258
RTIndian Ocean
 Naturaliste Plateau
SNSlope of Naturaliste Plateau, E Indian Ocean. Added to Thesaurus in 1995.
DSDP Site 259  search
BTDeep Sea Drilling Project
 .Leg 27
 ..DSDP Site 259
RTPerth abyssal plain
SNPerth abyssal plain, E Indian Ocean. Added to Thesaurus in 1981.
DSDP Site 26  search
BTDeep Sea Drilling Project
 .Leg 4
 ..DSDP Site 26
RTEquatorial Atlantic
 Vema fracture zone
SNVema fracture zone, N Equatorial Atlantic.
DSDP Site 260  search
BTDeep Sea Drilling Project
 .Leg 27
 ..DSDP Site 260
RTGascoyne abyssal plain
SNGascoyne abyssal plain, E Indian Ocean. Added to Thesaurus in 1981.
DSDP Site 261  search
BTDeep Sea Drilling Project
 .Leg 27
 ..DSDP Site 261
RTArgo abyssal plain
SNNE Argo abyssal plain, E Indian Ocean. Added to Thesaurus in 1981.
DSDP Site 262  search
BTDeep Sea Drilling Project
 .Leg 27
 ..DSDP Site 262
RTSouthwest Pacific
 Timor Trough
SNTimor Trough, E Indian Ocean. Added to Thesaurus in 1981.
DSDP Site 263  search
BTDeep Sea Drilling Project
 .Leg 27
 ..DSDP Site 263
RTCuvier abyssal plain
SNE Cuvier abyssal plain, E Indian Ocean. Added to Thesaurus in 1981.
DSDP Site 264  search
BTDeep Sea Drilling Project
 .Leg 28
 ..DSDP Site 264
RTIndian Ocean
 Naturaliste Plateau
SNNaturaliste Plateau, E Indian Ocean. Added to Thesaurus in 1981.
DSDP Site 265  search
BTDeep Sea Drilling Project
 .Leg 28
 ..DSDP Site 265
RTSoutheast Indian Ridge
SNSoutheast Indian Ridge, Indian Ocean. Before 1983, also search Site 265 AND Deep Sea Drilling Project. Added to Thesaurus in 1993.
DSDP Site 266  search
BTDeep Sea Drilling Project
 .Leg 28
 ..DSDP Site 266
RTAntarctic Ocean
SNOff the coast of Antarctica, about 800 km S of SE Indian Ridge crest in Antarctic Ocean. Added to Thesaurus in 1989.
DSDP Site 267  search
BTDeep Sea Drilling Project
 .Leg 28
 ..DSDP Site 267
RTAntarctic Ocean
SNDeep basin S of the Southeast Indian Ridge, about 600 km N of Wilkes Land continental shelf, in the Antarctic Ocean.
DSDP Site 268  search
BTDeep Sea Drilling Project
 .Leg 28
 ..DSDP Site 268
RTArctic Ocean
SNContinental margin, N of Knox Coast, Antarctica.
DSDP Site 269  search
BTDeep Sea Drilling Project
 .Leg 28
 ..DSDP Site 269
RTAntarctic Ocean
SNNear SE edge of South Indian abyssal plain, Antarctic Ocean.
DSDP Site 27  search
BTDeep Sea Drilling Project
 .Leg 4
 ..DSDP Site 27
RTNorth Atlantic
SNN margin of Demarara abyssal plain, S of Barracuda Ridge, off the Lesser Antilles Arc.
DSDP Site 270  search
BTDeep Sea Drilling Project
 .Leg 28
 ..DSDP Site 270
RTRoss Sea
SNSE Ross Sea, Antarctic Ocean. Added to Thesaurus in 1981.
DSDP Site 271  search
BTDeep Sea Drilling Project
 .Leg 28
 ..DSDP Site 271
RTRoss Sea
SNSE Ross Sea, Antarctic Ocean. Added to Thesaurus in 1993.
DSDP Site 272  search
BTDeep Sea Drilling Project
 .Leg 28
 ..DSDP Site 272
RTRoss Sea
SNSE Ross Sea, Antarctic Ocean. Added to Thesaurus in 1989.
DSDP Site 273  search
BTDeep Sea Drilling Project
 .Leg 28
 ..DSDP Site 273
RTRoss Sea
SNW central Ross Sea, Antarctic Ocean. Before 1982, also search Site 273 AND Deep Sea Drilling Project. Added to Thesaurus in 1993.
DSDP Site 274  search
BTDeep Sea Drilling Project
 .Leg 28
 ..DSDP Site 274
RTRoss Sea
SNRoss Sea, Antarctic Ocean. Added to Thesaurus in 1981.
DSDP Site 275  search
BTDeep Sea Drilling Project
 .Leg 29
 ..DSDP Site 275
RTSouthwest Pacific
SNSE Campbell Plateau, SSE of New Zealand.
DSDP Site 276  search
BTDeep Sea Drilling Project
 .Leg 29
 ..DSDP Site 276
RTSouthwest Pacific
SNOff E margin of Campbell Plateau, SE of New Zealand. Minimal data from core catcher and bit samples.
DSDP Site 277  search
BTDeep Sea Drilling Project
 .Leg 29
 ..DSDP Site 277
RTSouth Pacific
 Southwest Pacific
SNCampbell Plateau, SSE of New Zealand. Added to Thesaurus in 1989.
DSDP Site 278  search
BTDeep Sea Drilling Project
 .Leg 29
 ..DSDP Site 278
RTSouthwest Pacific
SNSSW of New Zealand, SW Pacific.
DSDP Site 279  search
BTDeep Sea Drilling Project
 .Leg 29
 ..DSDP Site 279
RTSouthwest Pacific
 Macquarie Ridge
SNMacquarie Ridge, SSW of New Zealand.
DSDP Site 28  search
BTDeep Sea Drilling Project
 .Leg 4
 ..DSDP Site 28
RTNorth Atlantic
SNOuter ridge, N of Puerto Rico Trench, NW Atlantic.
DSDP Site 280  search
BTDeep Sea Drilling Project
 .Leg 29
 ..DSDP Site 280
RTSouthwest Pacific
SNS of the South Tasman Rise which is S of Tasmania Australia.
DSDP Site 281  search
BTDeep Sea Drilling Project
 .Leg 29
 ..DSDP Site 281
RTSouthwest Pacific
SNSouth Tasman Rise, S of Tasmania Australia.
DSDP Site 282  search
BTDeep Sea Drilling Project
 .Leg 29
 ..DSDP Site 282
RTIndian Ocean
SNW of Tasmania Australia, SE Indian Ocean.
DSDP Site 283  search
BTDeep Sea Drilling Project
 .Leg 29
 ..DSDP Site 283
RTTasman Sea
SNW Tasman Sea, SE of Tasmania Australia.
DSDP Site 284  search
BTDeep Sea Drilling Project
 .Leg 29
 ..DSDP Site 284
RTTasman Sea
 DSDP Site 593
 Leg 90
SNW of New Zealand in the Tasman Sea. Site reoccupied as DSDP Site 593 on Leg 90. Added to Thesaurus in 1981.
DSDP Site 285  search
BTDeep Sea Drilling Project
 .Leg 30
 ..DSDP Site 285
RTSouthwest Pacific
SNS Fiji Basin, SW Pacific. Added to Thesaurus in 1989.
DSDP Site 286  search
BTDeep Sea Drilling Project
 .Leg 30
 ..DSDP Site 286
RTSouthwest Pacific
 Vanuatu
SNNew Hebrides Basin, W Pacific. Added to Thesaurus in 1989.
DSDP Site 287  search
BTDeep Sea Drilling Project
 .Leg 30
 ..DSDP Site 287
RTCoral Sea
 Coral Sea Basin
SNCoral Sea Basin, SW Pacific.
DSDP Site 288  search
BTDeep Sea Drilling Project
 .Leg 30
 ..DSDP Site 288
RTSouthwest Pacific
 Equatorial Pacific
 Ontong Java Plateau
SNSE margin Ontong Java Plateau, SW Equatorial Pacific. Before 1982, also search Site 288 AND Deep Sea Drilling Project. Added to Thesaurus in 1993.
DSDP Site 289  search
BTDeep Sea Drilling Project
 .Leg 30
 ..DSDP Site 289
RTSouthwest Pacific
 Equatorial Pacific
 Ontong Java Plateau
SNN Ontong Java Plateau, SW Pacific Ocean. Added to Thesaurus in 1989.
DSDP Site 29  search
BTDeep Sea Drilling Project
 .Leg 4
 ..DSDP Site 29
RTVenezuelan Basin
SNCentral Venezuelan Basin, E Caribbean.
DSDP Site 290  search
BTDeep Sea Drilling Project
 .Leg 31
 ..DSDP Site 290
RTWest Philippine Basin
SNW Philippine Basin, NW Pacific.
DSDP Site 291  search
BTDeep Sea Drilling Project
 .Leg 31
 ..DSDP Site 291
RTWest Philippine Basin
SNOuter Philippine Trench, S West Philippine Basin. Added to Thesaurus in 1993.
DSDP Site 292  search
BTDeep Sea Drilling Project
 .Leg 31
 ..DSDP Site 292
RTPhilippine Sea
SNBenham Rise, W Philippine Sea. Added to Thesaurus in 1981.
DSDP Site 293  search
BTDeep Sea Drilling Project
 .Leg 31
 ..DSDP Site 293
RTPhilippine Sea
SNW Philippine Sea. Added to Thesaurus in 1989.
DSDP Site 294  search
BTDeep Sea Drilling Project
 .Leg 31
 ..DSDP Site 294
RTWest Philippine Basin
SNW Philippine Basin, NW Pacific. Added to Thesaurus in 1989.
DSDP Site 295  search
BTDeep Sea Drilling Project
 .Leg 31
 ..DSDP Site 295
RTWest Philippine Basin
SNW Philippine Basin, NW Pacific.
DSDP Site 296  search
BTDeep Sea Drilling Project
 .Leg 31
 ..DSDP Site 296
RTKyushu-Palau Ridge
SNKyushu-Palau Ridge, N Philippine Sea. Added to Thesaurus in 1981.
DSDP Site 297  search
BTDeep Sea Drilling Project
 .Leg 31
 ..DSDP Site 297
RTPhilippine Sea
 Nankai Trough
SNNankai Trough, N Philippine Sea. Added to Thesaurus in 1981.
DSDP Site 298  search
BTDeep Sea Drilling Project
 .Leg 31
 ..DSDP Site 298
RTNankai Trough
SNNankai Trough, NW Pacific. Added to Thesaurus in 1989.
DSDP Site 299  search
BTDeep Sea Drilling Project
 .Leg 31
 ..DSDP Site 299
RTJapan Sea
 Yamato Basin
SNYamato Basin, Japan Sea. Added to Thesaurus in 1989.
DSDP Site 3  search
BTDeep Sea Drilling Project
 .Leg 1
 ..DSDP Site 3
RTGulf of Mexico
 Sigsbee Deep
SNSigsbee abyssal plain, Gulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 30  search
BTDeep Sea Drilling Project
 .Leg 4
 ..DSDP Site 30
RTAves Ridge
SNAves Ridge, E central Caribbean.
DSDP Site 300  search
BTDeep Sea Drilling Project
 .Leg 31
 ..DSDP Site 300
RTJapan Sea
 Japan Basin
SNS Japan Basin, Japan Sea.
DSDP Site 301  search
BTDeep Sea Drilling Project
 .Leg 31
 ..DSDP Site 301
RTJapan Basin
SNS Japan Basin, Japan Sea.
DSDP Site 302  search
BTDeep Sea Drilling Project
 .Leg 31
 ..DSDP Site 302
RTJapan Sea
 Yamato Basin
SNYamato Basin, Japan Sea. Added to Thesaurus in 1989.
DSDP Site 303  search
BTDeep Sea Drilling Project
 .Leg 32
 ..DSDP Site 303
RTNorthwest Pacific
SNNW Pacific Basin, NW of Shatsky Rise.
DSDP Site 304  search
BTDeep Sea Drilling Project
 .Leg 32
 ..DSDP Site 304
RTNorthwest Pacific
SNNW Pacific Basin, NW of Shatsky Rise.
DSDP Site 305  search
BTDeep Sea Drilling Project
 .Leg 32
 ..DSDP Site 305
RTShatsky Rise
SNShatsky Rise, NW Pacific. Added to Thesaurus in 1989.
DSDP Site 306  search
BTDeep Sea Drilling Project
 .Leg 32
 ..DSDP Site 306
RTShatsky Rise
SNSW flank of Shatsky Rise, NW Pacific.
DSDP Site 307  search
BTDeep Sea Drilling Project
 .Leg 32
 ..DSDP Site 307
RTNorthwest Pacific
SNSE of Shatsky Rise, NW Pacific.
DSDP Site 308  search
BTDeep Sea Drilling Project
 .Leg 32
 ..DSDP Site 308
RTEmperor Seamounts
SNKoko Guyot, Emperor Seamounts, W of Hess Rise, NW Pacific.
DSDP Site 309  search
BTDeep Sea Drilling Project
 .Leg 32
 ..DSDP Site 309
RTEmperor Seamounts
SNKoko Guyot, Emperor Seamounts, W of Hess Rise, NW Pacific. Very little was recovered from this core.
DSDP Site 31  search
BTDeep Sea Drilling Project
 .Leg 4
 ..DSDP Site 31
RTBeata Ridge
SNBeata Ridge, E central Caribbean.
DSDP Site 310  search
BTDeep Sea Drilling Project
 .Leg 32
 ..DSDP Site 310
RTNorthwest Pacific
 Hess Rise
SNHess Rise, N Pacific. Added to Thesaurus in 1989.
DSDP Site 311  search
BTDeep Sea Drilling Project
 .Leg 32
 ..DSDP Site 311
RTNorthwest Pacific
SNS of Hess Rise, NW Pacific.
DSDP Site 312  search
BTDeep Sea Drilling Project
 .Leg 32
 ..DSDP Site 312
SNS of Hess Rise, NW Pacific. This site was not successfully cored. It is close to DSDP Site 311.
DSDP Site 313  search
BTDeep Sea Drilling Project
 .Leg 32
 ..DSDP Site 313
RTNortheast Pacific
 Mid-Pacific Mountains
SNNE Mid-Pacific Mountains, NE Pacific. Added to Thesaurus in 1989.
DSDP Site 314  search
BTDeep Sea Drilling Project
 .Leg 33
 ..DSDP Site 314
RTNortheast Pacific
 Equatorial Pacific
 Line Islands
SNCentral Equatorial Pacific in the Line Islands S of Hawaii.
DSDP Site 315  search
BTDeep Sea Drilling Project
 .Leg 33
 ..DSDP Site 315
RTNortheast Pacific
 Equatorial Pacific
 Line Islands
SNCentral Equatorial Pacific near the Line Islands. Added to Thesaurus in 1981.
DSDP Site 316  search
BTDeep Sea Drilling Project
 .Leg 33
 ..DSDP Site 316
RTNortheast Pacific
 Equatorial Pacific
 Line Islands
SNLine Islands, E Equatorial Pacific.
DSDP Site 317  search
BTDeep Sea Drilling Project
 .Leg 33
 ..DSDP Site 317
RTEquatorial Pacific
 Manihiki Plateau
SNManihiki Plateau, SE Equatorial Pacific. Added to Thesaurus in 1989.
DSDP Site 318  search
BTDeep Sea Drilling Project
 .Leg 33
 ..DSDP Site 318
RTSoutheast Pacific
 Equatorial Pacific
 Tuamotu Islands
SNNear the Tuamotu Islands, French Polynesia, SE Equatorial Pacific.
DSDP Site 319  search
BTDeep Sea Drilling Project
 .Leg 34
 ..DSDP Site 319
RTSoutheast Pacific
 East Pacific Rise
SNE of the East Pacific Rise, on W flank of Galapagos Rise in SE Pacific Ocean. Added to Thesaurus in 1981.
DSDP Site 32  search
BTDeep Sea Drilling Project
 .Leg 5
 ..DSDP Site 32
RTNortheast Pacific
SNOff California coast, NE Pacific. Added to Thesaurus in 1993.
DSDP Site 32#DSDP Site 33#DSDP Site 34#DSDP Site 36#DSDP Site 37#DSDP Site 38#DS  search
DSDP Site 320  search
BTDeep Sea Drilling Project
 .Leg 34
 ..DSDP Site 320
RTSoutheast Pacific
 Equatorial Pacific
 Nazca Plate
SNOff the coast of Peru, SE Equatorial Pacific Ocean. Added to Thesaurus in 1981.
DSDP Site 321  search
BTDeep Sea Drilling Project
 .Leg 34
 ..DSDP Site 321
RTSoutheast Pacific
 Equatorial Pacific
 Nazca Plate
SNOff the coast of Peru, SE Pacific Ocean. Added to Thesaurus in 1981.
DSDP Site 322  search
BTDeep Sea Drilling Project
 .Leg 35
 ..DSDP Site 322
RTAntarctic Ocean
SNAntarctic Ocean between S tip of South America and the Antarctic Peninsula. Added to Thesaurus in 1981.
DSDP Site 323  search
BTDeep Sea Drilling Project
 .Leg 35
 ..DSDP Site 323
RTAntarctic Ocean
SNAntarctic Ocean, SW of South America in Bellingshausen abyssal plain. Added to Thesaurus in 1981.
DSDP Site 324  search
BTDeep Sea Drilling Project
 .Leg 35
 ..DSDP Site 324
RTAntarctic Ocean
SNAntarctic continental margin, just W of Bellingshausen Sea, in W Antarctic Ocean.
DSDP Site 325  search
BTDeep Sea Drilling Project
 .Leg 35
 ..DSDP Site 325
RTAntarctic Ocean
SNAntarctic Ocean, NW of the Antarctic Peninsula. Added to Thesaurus in 1981.
DSDP Site 326  search
BTDeep Sea Drilling Project
 .Leg 36
 ..DSDP Site 326
RTDrake Passage
SNDrake Passage, Antarctic Ocean.
DSDP Site 327  search
BTDeep Sea Drilling Project
 .Leg 36
 ..DSDP Site 327
RTFalkland Plateau
SNE Falkland Plateau in SW Atlantic Ocean, N of the Scotia Sea. Added to Thesaurus in 1981.
DSDP Site 328  search
BTDeep Sea Drilling Project
 .Leg 36
 ..DSDP Site 328
RTSouth Atlantic
SNFalkland outer basin, SW Atlantic. Before 1989, also search Site 328 AND Deep Sea Drilling Project. Added to Thesaurus in 1989.
DSDP Site 329  search
BTDeep Sea Drilling Project
 .Leg 36
 ..DSDP Site 329
RTFalkland Plateau
SNE Falkland Plateau in SW Atlantic Ocean, N of the Scotia Sea. Added to Thesaurus in 1981.
DSDP Site 33  search
BTDeep Sea Drilling Project
 .Leg 5
 ..DSDP Site 33
RTNortheast Pacific
SNDistal Delgada Fan, off N California, NE Pacific. Added to Thesaurus in 1995.
DSDP Site 330  search
BTDeep Sea Drilling Project
 .Leg 36
 ..DSDP Site 330
RTFalkland Plateau
SNE Falkland Plateau in SW Atlantic Ocean, N of the Scotia Sea. Added to Thesaurus in 1981.
DSDP Site 331  search
BTDeep Sea Drilling Project
 .Leg 36
 ..DSDP Site 331
RTArgentine Basin
SNArgentine Basin, SW Atlantic.
DSDP Site 332  search
BTDeep Sea Drilling Project
 .Leg 37
 ..DSDP Site 332
RTNorth Atlantic
 Mid-Atlantic Ridge
SNNear crest of Mid-Atlantic Ridge, W of the Azores. Added to Thesaurus in 1981.
DSDP Site 333  search
BTDeep Sea Drilling Project
 .Leg 37
 ..DSDP Site 333
RTNorth Atlantic
 Mid-Atlantic Ridge
SNNear crest of Mid-Atlantic Ridge. Added to Thesaurus in 1981.
DSDP Site 334  search
BTDeep Sea Drilling Project
 .Leg 37
 ..DSDP Site 334
RTNorth Atlantic
 Mid-Atlantic Ridge
SNW flank of Mid-Atlantic Ridge. Added to Thesaurus in 1981.
DSDP Site 335  search
BTDeep Sea Drilling Project
 .Leg 37
 ..DSDP Site 335
RTNorth Atlantic
 Mid-Atlantic Ridge
SNW flank of the Mid-Atlantic Ridge. Added to Thesaurus in 1981.
DSDP Site 336  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 336
RTArctic Ocean
 Iceland-Faeroe Ridge
 Norwegian Sea
SNN flank of Iceland-Faeroe Ridge, Norwegian Sea. Before 1989, also search Site 336 AND Deep Sea Drilling Project. Added to Thesaurus in 1989.
DSDP Site 337  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 337
RTNorwegian Sea
SNNorwegian Basin. Added to Thesaurus in 1995.
DSDP Site 338  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 338
RTVoring Plateau
SNOuter Voring Plateau, Norwegian Sea. Added to Thesaurus in 1989.
DSDP Site 339  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 339
RTVoring Plateau
SNInner Voring Plateau, Norwegian Sea. Added to Thesaurus in 1995.
DSDP Site 34  search
BTDeep Sea Drilling Project
 .Leg 5
 ..DSDP Site 34
RTNortheast Pacific
SNAbyssal plain, distal Delgada Fan, off N California, NE Pacific. Added to Thesaurus in 1995.
DSDP Site 340  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 340
RTVoring Plateau
SNInner Voring Plateau, Norwegian Sea.
DSDP Site 341  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 341
RTVoring Plateau
SNInner Voring Plateau, Norwegian Sea. Added to Thesaurus in 1995.
DSDP Site 342  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 342
RTVoring Plateau
SNOuter Voring Plateau, Norwegian Sea. Added to Thesaurus in 1995.
DSDP Site 343  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 343
RTNorwegian Sea
 Voring Plateau
SNAt the foot of Voring Plateau in Lofoten Basin, Norwegian Sea. Added to Thesaurus in 1989.
DSDP Site 344  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 344
RTNorwegian Sea
 Knipovich Ridge
SNKnipovich Ridge, Norwegian Sea. Added to Thesaurus in 1989.
DSDP Site 345  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 345
RTNorwegian Sea
SNLofoten Basin, Norwegian Sea. Added to Thesaurus in 1989.
DSDP Site 346  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 346
RTJan Mayen Ridge
SNJan Mayen Ridge, Norwegian Sea. Added to Thesaurus in 1989.
DSDP Site 347  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 347
RTJan Mayen Ridge
SNJan Mayen Ridge, Norwegian Sea.
DSDP Site 348  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 348
RTNorwegian Sea
 Icelandic Plateau
SNIcelandic Plateau, Norwegian Sea. Added to Thesaurus in 1989.
DSDP Site 349  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 349
RTJan Mayen Ridge
SNJan Mayen Ridge, Norwegian Sea. Added to Thesaurus in 1995.
DSDP Site 35  search
BTDeep Sea Drilling Project
 .Leg 5
 ..DSDP Site 35
RTGorda Rise
SNGorda Rise, NE Pacific. Added to Thesaurus in 1993.
DSDP Site 350  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 350
RTNorwegian Sea
SNS Norwegian Sea. Added to Thesaurus in 1995.
DSDP Site 352  search
BTDeep Sea Drilling Project
 .Leg 38
 ..DSDP Site 352
RTIceland-Faeroe Ridge
 Norwegian Sea
SNIceland-Faeroe Ridge, S Norwegian Sea. Added to Thesaurus in 1995.
DSDP Site 353  search
BTDeep Sea Drilling Project
 .Leg 39
 ..DSDP Site 353
RTNorth Atlantic
 Mid-Atlantic Ridge
 Vema fracture zone
SNVema fracture zone at Mid-Atlantic Ridge, N Atlantic.
DSDP Site 354  search
BTDeep Sea Drilling Project
 .Leg 39
 ..DSDP Site 354
RTNorth Atlantic
 Equatorial Atlantic
 Leg 154
SNCeara Rise, N central Equatorial Atlantic. Added to Thesaurus in 1989.
DSDP Site 355  search
BTDeep Sea Drilling Project
 .Leg 39
 ..DSDP Site 355
RTBrazil Basin
SNBrazil Basin, SW Atlantic. Added to Thesaurus in 1989.
DSDP Site 356  search
BTDeep Sea Drilling Project
 .Leg 39
 ..DSDP Site 356
RTSouth Atlantic
SNSao Paulo Plateau, SW Atlantic Ocean. Added to Thesaurus in 1981.
DSDP Site 357  search
BTDeep Sea Drilling Project
 .Leg 39
 ..DSDP Site 357
RTRio Grande Rise
SNRio Grande Rise, SW Atlantic Ocean. Added to Thesaurus in 1981.
DSDP Site 358  search
BTDeep Sea Drilling Project
 .Leg 39
 ..DSDP Site 358
RTArgentine Basin
SNN Argentine Basin, SW Atlantic.
DSDP Site 359  search
BTDeep Sea Drilling Project
 .Leg 39
 ..DSDP Site 359
RTWalvis Ridge
SNWalvis Ridge, SE Atlantic.
DSDP Site 36  search
BTDeep Sea Drilling Project
 .Leg 5
 ..DSDP Site 36
RTNortheast Pacific
SNAbyssal hills, N of Mendocino fracture zone, off N California, NE Pacific. Added to Thesaurus in 1995.
DSDP Site 360  search
BTDeep Sea Drilling Project
 .Leg 40
 ..DSDP Site 360
RTCape Basin
SNCape Basin, SE Atlantic. Added to Thesaurus in 1989.
DSDP Site 361  search
BTDeep Sea Drilling Project
 .Leg 40
 ..DSDP Site 361
RTSouth Atlantic
SNOff Cape of Good Hope, SE Atlantic Ocean. Added to Thesaurus in 1981.
DSDP Site 362  search
BTDeep Sea Drilling Project
 .Leg 40
 ..DSDP Site 362
RTWalvis Ridge
SNWalvis Ridge, SE Atlantic Ocean. Added to Thesaurus in 1981.
DSDP Site 363  search
BTDeep Sea Drilling Project
 .Leg 40
 ..DSDP Site 363
RTWalvis Ridge
SNWalvis Ridge, SE Atlantic Ocean. Added to Thesaurus in 1981.
DSDP Site 364  search
BTDeep Sea Drilling Project
 .Leg 40
 ..DSDP Site 364
RTAngola Basin
SNAngola Basin, SE Atlantic Ocean. Added to Thesaurus in 1981.
DSDP Site 365  search
BTDeep Sea Drilling Project
 .Leg 40
 ..DSDP Site 365
RTAngola Basin
SNAngola Basin, SE Atlantic. Added to Thesaurus in 1989.
DSDP Site 366  search
BTDeep Sea Drilling Project
 .Leg 41
 ..DSDP Site 366
RTSierra Leone Rise
 Equatorial Atlantic
 ODP Site 668
SNSierra Leone Rise, NE Equatorial Atlantic. Added to Thesaurus in 1989.
DSDP Site 367  search
BTDeep Sea Drilling Project
 .Leg 41
 ..DSDP Site 367
RTCape Verde Basin
SNCape Verde Basin, NE Atlantic Ocean. Added to Thesaurus in 1981.
DSDP Site 368  search
BTDeep Sea Drilling Project
 .Leg 41
 ..DSDP Site 368
RTCape Verde Rise
SNCape Verde Rise, NE Atlantic Ocean. Added to Thesaurus in 1981.
DSDP Site 369  search
BTDeep Sea Drilling Project
 .Leg 41
 ..DSDP Site 369
RTNorth Atlantic
SNSE of Canary Islands, NE Atlantic Ocean. Added to Thesaurus in 1981.
DSDP Site 37  search
BTDeep Sea Drilling Project
 .Leg 5
 ..DSDP Site 37
RTNortheast Pacific
SNAbyssal hills, N of Mendocino fracture zone, NE Pacific.
DSDP Site 370  search
BTDeep Sea Drilling Project
 .Leg 41
 ..DSDP Site 370
RTNorth Atlantic
SNOff Morocco, NE Atlantic Ocean. Added to Thesaurus in 1981.
DSDP Site 371  search
BTDeep Sea Drilling Project
 .Leg 42A
 ..DSDP Site 371
RTWest Mediterranean
SNN of Algeria, West Mediterranean.
DSDP Site 372  search
BTDeep Sea Drilling Project
 .Leg 42A
 ..DSDP Site 372
RTBalearic Basin
SNBalearic Basin, Mediterranean Sea. Added to Thesaurus in 1981.
DSDP Site 373  search
BTDeep Sea Drilling Project
 .Leg 42A
 ..DSDP Site 373
RTTyrrhenian Sea
SNTyrrhenian abyssal plain, Tyrrhenian Sea.
DSDP Site 374  search
BTDeep Sea Drilling Project
 .Leg 42A
 ..DSDP Site 374
RTIonian Sea
SNIonian Sea. Added to Thesaurus in 1981.
DSDP Site 375  search
BTDeep Sea Drilling Project
 .Leg 42A
 ..DSDP Site 375
RTFlorence Rise
SNFlorence Rise, E Mediterranean Sea. Added to Thesaurus in 1989.
DSDP Site 376  search
BTDeep Sea Drilling Project
 .Leg 42A
 ..DSDP Site 376
RTFlorence Rise
SNFlorence Rise, E Mediterranean Sea. Added to Thesaurus in 1989.
DSDP Site 377  search
BTDeep Sea Drilling Project
 .Leg 42A
 ..DSDP Site 377
RTEast Mediterranean
 DSDP Site 126
 Mediterranean Ridge
SNMediterranean Ridge cleft, East Mediterranean. Added to Thesaurus in 1995.
DSDP Site 378  search
BTDeep Sea Drilling Project
 .Leg 42A
 ..DSDP Site 378
RTEast Mediterranean
SNCretan Basin, East Mediterranean. Added to Thesaurus in 1993.
DSDP Site 379  search
BTDeep Sea Drilling Project
 .Leg 42B
 ..DSDP Site 379
RTBlack Sea
SNE Black Sea. Added to Thesaurus in 1981.
DSDP Site 38  search
BTDeep Sea Drilling Project
 .Leg 5
 ..DSDP Site 38
RTNortheast Pacific
SNAbyssal hills, between Mendocino and Pioneer fracture zones, NE Pacific.
DSDP Site 380  search
BTDeep Sea Drilling Project
 .Leg 42B
 ..DSDP Site 380
RTBlack Sea
SNW Black Sea. Added to Thesaurus in 1981.
DSDP Site 381  search
BTDeep Sea Drilling Project
 .Leg 42B
 ..DSDP Site 381
RTBlack Sea
SNW Black Sea. Added to Thesaurus in 1981.
DSDP Site 382  search
BTDeep Sea Drilling Project
 .Leg 43
 ..DSDP Site 382
RTNew England Seamounts
SNNashville Seamount, New England Seamounts, NW Atlantic. Added to Thesaurus in 1993.
DSDP Site 383  search
BTDeep Sea Drilling Project
 .Leg 43
 ..DSDP Site 383
RTSohm abyssal plain
SNJ-anomaly Ridge, Sohm abyssal plain, NW Atlantic.
DSDP Site 384  search
BTDeep Sea Drilling Project
 .Leg 43
 ..DSDP Site 384
RTNorth Atlantic
 Grand Banks
SNJ-anomaly Ridge, Grand Banks, NW Atlantic. Added to Thesaurus in 1989.
DSDP Site 385  search
BTDeep Sea Drilling Project
 .Leg 43
 ..DSDP Site 385
RTNew England Seamounts
SNVogel Seamount, New England Seamounts, NW Atlantic. Added to Thesaurus in 1993.
DSDP Site 386  search
BTDeep Sea Drilling Project
 .Leg 43
 ..DSDP Site 386
RTBermuda Rise
SNCentral Bermuda Rise, NW Atlantic. Added to Thesaurus in 1989.
DSDP Site 387  search
BTDeep Sea Drilling Project
 .Leg 43
 ..DSDP Site 387
RTBermuda Rise
SNW Bermuda Rise, NW Atlantic. Added to Thesaurus in 1989.
DSDP Site 388  search
BTDeep Sea Drilling Project
 .Leg 44
 ..DSDP Site 388
RTNorth Atlantic
SNLower continental rise hills, E of Cape Hatteras, NW Atlantic.
DSDP Site 389  search
BTDeep Sea Drilling Project
 .Leg 44
 ..DSDP Site 389
RTBlake Nose
SNN rim of Blake Nose, NW Atlantic.
DSDP Site 39  search
BTDeep Sea Drilling Project
 .Leg 5
 ..DSDP Site 39
RTNortheast Pacific
SNAbyssal hills, between Pioneer and Murray fracture zones, NE Pacific.
DSDP Site 390  search
BTDeep Sea Drilling Project
 .Leg 44
 ..DSDP Site 390
RTBlake Nose
 ODP Site 1049
SNBlake Nose, NW Atlantic. Added to Thesaurus in 1989.
DSDP Site 391  search
BTDeep Sea Drilling Project
 .Leg 44
 ..DSDP Site 391
RTBlake-Bahama Basin
SNBlake-Bahama Basin, NW Atlantic Ocean. Added to Thesaurus in 1981.
DSDP Site 392  search
BTDeep Sea Drilling Project
 .Leg 44
 ..DSDP Site 392
RTBlake Nose
SNBlake Nose, Blake Plateau, NW Atlantic. Added to Thesaurus in 1993.
DSDP Site 395  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 45
 ...DSDP Site 395
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 78B
 ...DSDP Site 395
BTOcean Drilling Program
 .Leg 109
 ..DSDP Site 395
BTOcean Drilling Program
 .Leg 174B
 ..DSDP Site 395
RTNorth Atlantic
 Mid-Atlantic Ridge
 Kane fracture zone
SNN central Atlantic Ocean near the Mid-Atlantic Ridge axis. Holes 395 and 395A were drilled on Leg 45. Hole 395A was reentered and Hole 395B was drilled on Leg 78B. Hole 395A was reentered on Leg 109 and on Leg 174B. This term has multiple hierarchies. Add
DSDP Site 396  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 45
 ...DSDP Site 396
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 46
 ...DSDP Site 396
RTNorth Atlantic
 Mid-Atlantic Ridge
SNN central Atlantic Ocean near the Mid-Atlantic Ridge axis. This term has multiple hierarchies. Added to Thesaurus in 1981.
DSDP Site 397  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 47
 ...DSDP Site 397
RTNorth Atlantic
 Canary Islands
 Leg 157
 ODP Site 955
 Cape Bojador
SNCape Bojador in NE Atlantic Ocean, near Canary Islands. Added to Thesaurus in 1989.
DSDP Site 398  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 47
 ...DSDP Site 398
RTNorth Atlantic
 Leg 157
SNOff the coast of N Portugal in NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 399  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 48
 ...DSDP Site 399
RTNorth Atlantic
SNBiscay abyssal plain, NE Atlantic.
DSDP Site 4  search
BTDeep Sea Drilling Project
 .Leg 1
 ..DSDP Site 4
RTNorth Atlantic
SNNW Atlantic, in Horizon A area, E of San Salvador, Bahamas. Added to Thesaurus in 1989.
DSDP Site 40  search
BTDeep Sea Drilling Project
 .Leg 5
 ..DSDP Site 40
RTNortheast Pacific
SNNE Pacific, between Mendocino and Molokai fracture zones. Added to Thesaurus in 1993.
DSDP Site 400  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 48
 ...DSDP Site 400
RTNorth Atlantic
SNBiscay abyssal plain, NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 401  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 48
 ...DSDP Site 401
RTNorth Atlantic
SNEdge of Meriadzek Terrace, NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 402  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 48
 ...DSDP Site 402
RTNorth Atlantic
 Bay of Biscay
SNContinental slope of Bay of Biscay, NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 403  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 48
 ...DSDP Site 403
RTRockall Plateau
SNSW margin of Rockall Plateau, NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 404  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 48
 ...DSDP Site 404
RTRockall Plateau
SNSW margin of Rockall Plateau, NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 405  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 48
 ...DSDP Site 405
RTRockall Plateau
SNS Rockall Plateau, NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 406  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 48
 ...DSDP Site 406
RTRockall Plateau
SNS Rockall Plateau, NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 407  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 49
 ...DSDP Site 407
RTMid-Atlantic Ridge
 Reykjanes Ridge
SNReykjanes Ridge, N Atlantic. Added to Thesaurus in 1989.
DSDP Site 408  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 49
 ...DSDP Site 408
RTMid-Atlantic Ridge
 Reykjanes Ridge
SNReykjanes Ridge, N Atlantic. Added to Thesaurus in 1989.
DSDP Site 409  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 49
 ...DSDP Site 409
RTReykjanes Ridge
SNReykjanes Ridge, N Atlantic.
DSDP Site 41  search
BTDeep Sea Drilling Project
 .Leg 5
 ..DSDP Site 41
RTNortheast Pacific
SNAbyssal hills, between Molokai and Clarion fracture zones, NE Pacific.
DSDP Site 410  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 49
 ...DSDP Site 410
RTNorth Atlantic
 Mid-Atlantic Ridge
SNCrest of Mid-Atlantic Ridge in N Atlantic. Added to Thesaurus in 1989.
DSDP Site 411  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 49
 ...DSDP Site 411
RTFAMOUS
 North Atlantic
 Mid-Atlantic Ridge
SNCrest of Mid-Atlantic Ridge FAMOUS area, N Atlantic.
DSDP Site 412  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 49
 ...DSDP Site 412
RTFAMOUS
 North Atlantic
 Mid-Atlantic Ridge
SNCrest of Mid-Atlantic Ridge FAMOUS area, N Atlantic.
DSDP Site 413  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 49
 ...DSDP Site 413
RTFAMOUS
 North Atlantic
 Mid-Atlantic Ridge
SNCrest of Mid-Atlantic Ridge, FAMOUS area, N Atlantic.
DSDP Site 415  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 50
 ...DSDP Site 415
RTNorth Atlantic
SNAgadir Canyon, off S coast of Morocco, NE Atlantic. Added to Thesaurus in 1995.
DSDP Site 416  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 50
 ...DSDP Site 416
RTNorth Atlantic
SNOff coast of Morocco in NE Atlantic Ocean. Added to Thesaurus in 1989.
DSDP Site 417  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 51
 ...DSDP Site 417
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 52
 ...DSDP Site 417
RTBermuda Rise
SNNear S end of Bermuda Rise, NW Atlantic Ocean. Site drilled on Leg 51A, Leg 51B, and Leg 52. This term has multiple hierarchies. Added to Thesaurus in 1981.
DSDP Site 418  search
BTOcean Drilling Program
 .Leg 102
 ..DSDP Site 418
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 52
 ...DSDP Site 418
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 53
 ...DSDP Site 418
RTBermuda Rise
SNNear S end of Bermuda Rise, NW Atlantic Ocean. This term has multiple hierarchies. Added to Thesaurus in 1981.
DSDP Site 419  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 54
 ...DSDP Site 419
RTNortheast Pacific
 Equatorial Pacific
 East Pacific Rise
SNEast Pacific Rise, NE Equatorial Pacific. Before 1982, also search Site 419 AND Deep Sea Drilling Project. Added to Thesaurus in 1993.
DSDP Site 42  search
BTDeep Sea Drilling Project
 .Leg 5
 ..DSDP Site 42
RTNortheast Pacific
SNAbyssal hills between Clarion and Clipperton fracture zones, NE Pacific. Added to Thesaurus in 1995.
DSDP Site 420  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 54
 ...DSDP Site 420
RTNortheast Pacific
 East Pacific Rise
SNEast Pacific Rise, NE Pacific. Before 1982, also search Site 420 AND Deep Sea Drilling Project. Added to Thesaurus in 1993.
DSDP Site 421  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 54
 ...DSDP Site 421
RTNortheast Pacific
 East Pacific Rise
SNW flank of East Pacific Rise, NE Pacific. Before 1982, also search Site 421 AND Deep Sea Drilling Project.
DSDP Site 422  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 54
 ...DSDP Site 422
RTNortheast Pacific
 East Pacific Rise
SNW flank of East Pacific Rise, NE Pacific. Before 1982, also search Site 422 AND Deep Sea Drilling Project.
DSDP Site 423  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 54
 ...DSDP Site 423
RTNortheast Pacific
 East Pacific Rise
SNW flank of East Pacific Rise, NE Pacific. Before 1982, also search Site 423 AND Deep Sea Drilling Project.
DSDP Site 424  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 54
 ...DSDP Site 424
RTNortheast Pacific
 Equatorial Pacific
SNNE Equatorial Pacific. Added to Thesaurus in 1989.
DSDP Site 425  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 54
 ...DSDP Site 425
RTNortheast Pacific
 Equatorial Pacific
SNN of Galapagos spreading center, NE Equatorial Pacific. Before 1982, also search Site 425 AND Deep Sea Drilling Project.
DSDP Site 427  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 54
 ...DSDP Site 427
RTSiqueiros fracture zone
SNTrough in Siqueiros fracture zone, NE Pacific. Before 1982, also search Site 427 AND Deep Sea Drilling Project.
DSDP Site 428  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 54
 ...DSDP Site 428
RTNortheast Pacific
 East Pacific Rise
SNW flank of East Pacific Rise, NE Pacific. Before 1982, also search Site 428 AND Deep Sea Drilling Project.
DSDP Site 429  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 54
 ...DSDP Site 429
RTNortheast Pacific
 East Pacific Rise
SNW flank of East Pacific Rise, NE Pacific. Before 1982, also search Site 429 AND Deep Sea Drilling Project.
DSDP Site 43  search
BTDeep Sea Drilling Project
 .Leg 5
 ..DSDP Site 43
RTNortheast Pacific
SNAbyssal hills, between Clarion and Molokai fracture zones, E of Hawaii, NE Pacific.
DSDP Site 430  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 55
 ...DSDP Site 430
RTEmperor Seamounts
SNOjin Seamount, NW Pacific. Added to Thesaurus in 1989.
DSDP Site 431  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 55
 ...DSDP Site 431
RTEmperor Seamounts
SNSeamount C, NW Pacific. Added to Thesaurus in 1989.
DSDP Site 432  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 55
 ...DSDP Site 432
RTEmperor Seamounts
SNNintoku Seamount, NW Pacific. Added to Thesaurus in 1989.
DSDP Site 433  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 55
 ...DSDP Site 433
RTEmperor Seamounts
SNSuiko Seamount, NW Pacific. Added to Thesaurus in 1989.
DSDP Site 434  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 56
 ...DSDP Site 434
RTJapan Trench
SNJapan Trench, NW Pacific. Added to Thesaurus in 1989.
DSDP Site 435  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 56
 ...DSDP Site 435
RTJapan Trench
SNJapan Trench, NW Pacific. Added to Thesaurus in 1989.
DSDP Site 436  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 56
 ...DSDP Site 436
RTNorthwest Pacific
SNNW Pacific. Added to Thesaurus in 1989.
DSDP Site 438  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 57
 ...DSDP Site 438
RTJapan Trench
SNJapan Trench, NW Pacific Ocean. Added to Thesaurus in 1989.
DSDP Site 439  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 57
 ...DSDP Site 439
RTNorthwest Pacific
SNNear Japan Trench in NW Pacific. Added to Thesaurus in 1989.
DSDP Site 44  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 44
RTNortheast Pacific
SNHorizon Ridge, a shallow ridge, S of Hawaiian Ridge, NE Pacific.
DSDP Site 440  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 57
 ...DSDP Site 440
RTJapan Trench
SNJapan Trench, NW Pacific. Added to Thesaurus in 1989.
DSDP Site 442  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 58
 ...DSDP Site 442
RTPhilippine Sea
 Shikoku Basin
SNShikoku Basin, N Philippine Sea. Added to Thesaurus in 1989.
DSDP Site 443  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 58
 ...DSDP Site 443
RTShikoku Basin
SNShikoku Basin, N Philippine Sea. Before 1982, also search Site 443 AND Deep Sea Drilling Project.
DSDP Site 444  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 58
 ...DSDP Site 444
RTShikoku Basin
SNShikoku Basin, N Philippine Sea. Before 1982, also search Site 444 AND Deep Sea Drilling Project.
DSDP Site 445  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 58
 ...DSDP Site 445
RTDaito Ridge
SNSmall basin on Daito Ridge, NW Philippine Sea. Before 1982, also search Site 445 AND Deep Sea Drilling Project. Added to Thesaurus in 1993.
DSDP Site 446  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 58
 ...DSDP Site 446
RTPhilippine Sea
SNDaito Basin, Philippine Sea. Before 1982, also search Site 446 AND Deep Sea Drilling Project. Added to Thesaurus in 1993.
DSDP Site 447  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 59
 ...DSDP Site 447
RTWest Philippine Basin
SNE West Philippine Basin, Philippine Sea. Before 1982, also search Site 447 AND Deep Sea Drilling Project.
DSDP Site 448  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 59
 ...DSDP Site 448
RTKyushu-Palau Ridge
SNWestern edge of Kyushu-Palau Ridge, central Philippine Sea. Added to Thesaurus in 1995.
DSDP Site 449  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 59
 ...DSDP Site 449
RTParece Vela Basin
SNW Parece Vela Basin, Philippine Sea. Before 1982, also search Site 449 AND Deep Sea Drilling Project.
DSDP Site 45  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 45
RTNortheast Pacific
 Central Pacific
SNN central Pacific Ocean W of S Hawaiian Ridge.
DSDP Site 450  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 59
 ...DSDP Site 450
RTParece Vela Basin
SNE Parece Vela Basin, Philippine Sea. Before 1982, also search Site 450 AND Deep Sea Drilling Project. Added to Thesaurus in 1993.
DSDP Site 451  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 59
 ...DSDP Site 451
RTNorthwest Pacific
SNE edge of West Mariana Ridge, NW Pacific. Before 1982, also search Site 451 AND Deep Sea Drilling Project.
DSDP Site 452  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 60
 ...DSDP Site 452
RTParece Vela Basin
SNN Parece Vela Basin, E Philippine Sea.
DSDP Site 453  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 60
 ...DSDP Site 453
RTPhilippine Sea
 Mariana Trough
SNMariana Trough, Philippine Sea. Added to Thesaurus in 1993.
DSDP Site 454  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 60
 ...DSDP Site 454
RTPhilippine Sea
 Mariana Trough
SNMariana Trough, Philippine Sea.
DSDP Site 455  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 60
 ...DSDP Site 455
RTPhilippine Sea
 Mariana Trough
SNE Mariana Trough, Philippine Sea.
DSDP Site 456  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 60
 ...DSDP Site 456
RTPhilippine Sea
 Mariana Trough
SNE Mariana Trough, Philippine Sea.
DSDP Site 457  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 60
 ...DSDP Site 457
RTPhilippine Sea
SNMariana arc, SE Philippine Sea. Added to Thesaurus in 1995.
DSDP Site 458  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 60
 ...DSDP Site 458
RTNorthwest Pacific
SNNW Pacific Ocean. Added to Thesaurus in 1985.
DSDP Site 459  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 60
 ...DSDP Site 459
RTNorthwest Pacific
SNNW Pacific Ocean. Added to Thesaurus in 1985.
DSDP Site 46  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 46
RTNorthwest Pacific
SNFracture zone ridge, N of Mid-Pacific Mountains, NW Pacific.
DSDP Site 460  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 60
 ...DSDP Site 460
RTMariana Trench
SNMariana Trench, NW Pacific.
DSDP Site 461  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 60
 ...DSDP Site 461
RTMariana Trench
SNMariana Trench, NW Pacific.
DSDP Site 462  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 61
 ...DSDP Site 462
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 89
 ...DSDP Site 462
RTNorthwest Pacific
 Equatorial Pacific
 Nauru Basin
SNN Nauru Basin, W Equatorial Pacific. Before 1982, also search Site 462 AND Deep Sea Drilling Project. This term has multiple hierarchies. Added to Thesaurus in 1985.
DSDP Site 463  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 62
 ...DSDP Site 463
RTNorthwest Pacific
 Mid-Pacific Mountains
SNNW Pacific Ocean. Added to Thesaurus in 1985.
DSDP Site 464  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 62
 ...DSDP Site 464
RTNorthwest Pacific
 Hess Rise
SNN Hess Rise, N central Pacific Ocean. Added to Thesaurus in 1985.
DSDP Site 465  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 62
 ...DSDP Site 465
RTNorthwest Pacific
 Hess Rise
SNS Hess Rise, N central Pacific Ocean. Added to Thesaurus in 1985.
DSDP Site 466  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 62
 ...DSDP Site 466
RTNorthwest Pacific
 Hess Rise
SNS Hess Rise, N central Pacific Ocean. Added to Thesaurus in 1985.
DSDP Site 467  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 63
 ...DSDP Site 467
RTNortheast Pacific
SNNE Pacific, off S California. Added to Thesaurus in 1985.
DSDP Site 468  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 63
 ...DSDP Site 468
RTNortheast Pacific
SNNE Pacific, off Baja California. Added to Thesaurus in 1985.
DSDP Site 469  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 63
 ...DSDP Site 469
RTNortheast Pacific
SNNE Pacific, off Baja California. Added to Thesaurus in 1985.
DSDP Site 47  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 47
RTShatsky Rise
SNCrest of Shatsky Rise, NW Pacific.
DSDP Site 470  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 63
 ...DSDP Site 470
RTNortheast Pacific
SNNE Pacific, off Baja California. Added to Thesaurus in 1985.
DSDP Site 471  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 63
 ...DSDP Site 471
RTNortheast Pacific
SNNE Pacific, off Baja California. Added to Thesaurus in 1985.
DSDP Site 472  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 63
 ...DSDP Site 472
RTNortheast Pacific
SNNE Pacific, off Baja California. Added to Thesaurus in 1985.
DSDP Site 473  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 63
 ...DSDP Site 473
RTNortheast Pacific
SNNE Pacific, off Mexico. Added to Thesaurus in 1985.
DSDP Site 474  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 64
 ...DSDP Site 474
RTNortheast Pacific
SNNE Pacific, off Mexico. Added to Thesaurus in 1985.
DSDP Site 475  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 64
 ...DSDP Site 475
RTNortheast Pacific
SNNE Pacific, off Mexico. Added to Thesaurus in 1985.
DSDP Site 476  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 64
 ...DSDP Site 476
RTNortheast Pacific
SNNE Pacific, off Mexico. Added to Thesaurus in 1985.
DSDP Site 477  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 64
 ...DSDP Site 477
RTGulf of California
SNGulf of California. Added to Thesaurus in 1985.
DSDP Site 478  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 64
 ...DSDP Site 478
RTGulf of California
SNGulf of California. Added to Thesaurus in 1985.
DSDP Site 479  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 64
 ...DSDP Site 479
RTGulf of California
SNGulf of California. Added to Thesaurus in 1985.
DSDP Site 48  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 48
RTShatsky Rise
SNCrest of Shatsky Rise, NW Pacific.
DSDP Site 480  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 64
 ...DSDP Site 480
RTGulf of California
SNGulf of California. Added to Thesaurus in 1985.
DSDP Site 481  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 64
 ...DSDP Site 481
RTGulf of California
SNGulf of California. Added to Thesaurus in 1985.
DSDP Site 482  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 65
 ...DSDP Site 482
RTGulf of California
SNGulf of California. Added to Thesaurus in 1985.
DSDP Site 483  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 65
 ...DSDP Site 483
RTGulf of California
SNGulf of California. Added to Thesaurus in 1985.
DSDP Site 484  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 65
 ...DSDP Site 484
RTGulf of California
SNGulf of California. Added to Thesaurus in 1985.
DSDP Site 485  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 65
 ...DSDP Site 485
RTGulf of California
SNGulf of California. Added to Thesaurus in 1985.
DSDP Site 49  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 49
RTShatsky Rise
SNW flank of Shatsky Rise, NW Pacific.
DSDP Site 494  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 67
 ...DSDP Site 494
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, off Central America. Added to Thesaurus in 1985.
DSDP Site 495  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 67
 ...DSDP Site 495
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, off Central America. Added to Thesaurus in 1985.
DSDP Site 496  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 67
 ...DSDP Site 496
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, off Central America. Added to Thesaurus in 1985.
DSDP Site 497  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 67
 ...DSDP Site 497
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, off Central America. Added to Thesaurus in 1985.
DSDP Site 498  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 67
 ...DSDP Site 498
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, off Central America. Added to Thesaurus in 1985.
DSDP Site 499  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 67
 ...DSDP Site 499
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, off Central America. Added to Thesaurus in 1985.
DSDP Site 5  search
BTDeep Sea Drilling Project
 .Leg 1
 ..DSDP Site 5
RTNorth Atlantic
 Bahamas
SNNW Atlantic, E of San Salvador, Bahamas.
DSDP Site 50  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 50
RTShatsky Rise
SNW flank of Shatsky Rise, NW Pacific.
DSDP Site 500  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 67
 ...DSDP Site 500
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, off Central America. Added to Thesaurus in 1985.
DSDP Site 501  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 68
 ...DSDP Site 501
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, off Colombia. Added to Thesaurus in 1985.
DSDP Site 502  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 68
 ...DSDP Site 502
RTCaribbean Sea
SNW Caribbean Sea, off Central America. Added to Thesaurus in 1985.
DSDP Site 503  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 68
 ...DSDP Site 503
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, off Central America. Added to Thesaurus in 1985.
DSDP Site 504  search
BTOcean Drilling Program
 .Leg 148
 ..DSDP Site 504
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 69
 ...DSDP Site 504
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 70
 ...DSDP Site 504
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 83
 ...DSDP Site 504
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 92
 ...DSDP Site 504
BTOcean Drilling Program
 .Leg 111
 ..DSDP Site 504
BTOcean Drilling Program
 .Leg 137
 ..DSDP Site 504
BTOcean Drilling Program
 .Leg 140
 ..DSDP Site 504
UFDSDP Site 504B
RTNortheast Pacific
 Equatorial Pacific
 ODP Site 677
 ODP Site 678
SNE Equatorial Pacific, off Colombia. These additional Legs were redrilled in Hole B. This term has multiple hierarchies. Added to Thesaurus in 1985.
DSDP Site 504B  search
USEDSDP Site 504
DSDP Site 505  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 69
 ...DSDP Site 505
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, off Colombia. Added to Thesaurus in 1985.
DSDP Site 506  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 70
 ...DSDP Site 506
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific. Added to Thesaurus in 1985.
DSDP Site 507  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 70
 ...DSDP Site 507
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific. Added to Thesaurus in 1985.
DSDP Site 508  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 70
 ...DSDP Site 508
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific. Added to Thesaurus in 1985.
DSDP Site 509  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 70
 ...DSDP Site 509
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific. Added to Thesaurus in 1985.
DSDP Site 51  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 51
RTNorthwest Pacific
SNNW Pacific, abyssal plain near Shatsky Rise. Added to Thesaurus in 1993.
DSDP Site 510  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 70
 ...DSDP Site 510
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific. Added to Thesaurus in 1985.
DSDP Site 511  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 71
 ...DSDP Site 511
RTSouth Atlantic
SNS Atlantic Ocean. Added to Thesaurus in 1985.
DSDP Site 512  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 71
 ...DSDP Site 512
RTSouth Atlantic
SNS Atlantic Ocean. Added to Thesaurus in 1985.
DSDP Site 513  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 71
 ...DSDP Site 513
RTSouth Atlantic
SNS Central Atlantic Ocean. Added to Thesaurus in 1985.
DSDP Site 514  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 71
 ...DSDP Site 514
RTSouth Atlantic
SNS Central Atlantic Ocean. Added to Thesaurus in 1985.
DSDP Site 515  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 72
 ...DSDP Site 515
RTAntarctic Bottom Water
 Brazil Basin
SNBrazil Basin, S Atlantic. Added to Thesaurus in 1989.
DSDP Site 516  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 72
 ...DSDP Site 516
RTRio Grande Rise
SNRio Grande Rise, SW Atlantic. Added to Thesaurus in 1989.
DSDP Site 517  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 72
 ...DSDP Site 517
RTRio Grande Rise
SNW flank of Rio Grande Rise, SW Atlantic Ocean. Added to Thesaurus in 1989.
DSDP Site 518  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 72
 ...DSDP Site 518
RTVema Channel
SNE flank of Vema Channel in SE Atlantic. Added to Thesaurus in 1989.
DSDP Site 519  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 73
 ...DSDP Site 519
RTSouth Atlantic
 Mid-Atlantic Ridge
SNMid-Atlantic Ridge in S Atlantic. Added to Thesaurus in 1989.
DSDP Site 52  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 52
RTNorthwest Pacific
SNNW Pacific abyssal plain, E of Izu-Bonin Trench.
DSDP Site 520  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 73
 ...DSDP Site 520
RTSouth Atlantic
 Mid-Atlantic Ridge
SNMid-Atlantic Ridge in S Atlantic. Added to Thesaurus in 1989.
DSDP Site 521  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 73
 ...DSDP Site 521
RTSouth Atlantic
 Mid-Atlantic Ridge
SNMid-Atlantic Ridge in S Atlantic. Added to Thesaurus in 1989.
DSDP Site 522  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 73
 ...DSDP Site 522
RTAngola Basin
SNAngola Basin, SE Atlantic. Added to Thesaurus in 1989.
DSDP Site 523  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 73
 ...DSDP Site 523
RTAngola Basin
 Walvis Ridge
SNAngola Basin, just W of Walvis Ridge in S Atlantic. Added to Thesaurus in 1989.
DSDP Site 524  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 73
 ...DSDP Site 524
RTCape Basin
 Walvis Ridge
SNCape Basin, E of Walvis Ridge in S Atlantic. Added to Thesaurus in 1989.
DSDP Site 525  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 74
 ...DSDP Site 525
RTWalvis Ridge
SNWalvis Ridge, S Atlantic. Added to Thesaurus in 1989.
DSDP Site 526  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 74
 ...DSDP Site 526
RTWalvis Ridge
SNWalvis Ridge, S Atlantic. Added to Thesaurus in 1989.
DSDP Site 527  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 74
 ...DSDP Site 527
RTWalvis Ridge
SNWalvis Ridge, S Atlantic. Added to Thesaurus in 1989.
DSDP Site 528  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 74
 ...DSDP Site 528
RTWalvis Ridge
SNW Walvis Ridge, S Atlantic. Added to Thesaurus in 1989.
DSDP Site 529  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 74
 ...DSDP Site 529
RTWalvis Ridge
SNWalvis Ridge, S Atlantic. Added to Thesaurus in 1989.
DSDP Site 53  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 53
RTParece Vela Basin
SNParece Vela Basin, flank of Iwo-Jima Ridge, central Philippine Sea.
DSDP Site 530  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 75
 ...DSDP Site 530
RTWalvis Ridge
SNN Walvis Ridge, S Atlantic. Added to Thesaurus in 1989.
DSDP Site 531  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 75
 ...DSDP Site 531
RTWalvis Ridge
SNCrest of Walvis Ridge, near coast of Africa. Added to Thesaurus in 1989.
DSDP Site 532  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 75
 ...DSDP Site 532
RTWalvis Ridge
SNWalvis Ridge, S Atlantic. Added to Thesaurus in 1989.
DSDP Site 533  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 76
 ...DSDP Site 533
RTNorth Atlantic
SNNW Atlantic, off Florida. Added to Thesaurus in 1985.
DSDP Site 534  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 76
 ...DSDP Site 534
RTNorth Atlantic
SNNW Atlantic, off Florida. Added to Thesaurus in 1985.
DSDP Site 535  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 77
 ...DSDP Site 535
RTGulf of Mexico
SNGulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 536  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 77
 ...DSDP Site 536
RTGulf of Mexico
SNGulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 537  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 77
 ...DSDP Site 537
RTGulf of Mexico
SNGulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 538  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 77
 ...DSDP Site 538
RTGulf of Mexico
SNN flank of Catoche Knoll, Gulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 54  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 54
RTParece Vela Basin
SNParece Vela Basin, W of Iwo-Jima Ridge, Philippine Sea.
DSDP Site 540  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 77
 ...DSDP Site 540
RTGulf of Mexico
SNGulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 541  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 78A
 ...DSDP Site 541
RTCaribbean Sea
 Barbados Ridge
 Leg 156
SNBarbados Ridge, near border of E Caribbean Sea. Added to Thesaurus in 1989.
DSDP Site 542  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 78A
 ...DSDP Site 542
RTCaribbean Sea
 Barbados Ridge
 ODP Site 675
SNBarbados Ridge, near border of E Caribbean Sea. Added to Thesaurus in 1989.
DSDP Site 543  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 78A
 ...DSDP Site 543
RTNorth Atlantic
 Barbados Ridge
SNLocated on Tiburon Rise, near Barbados Ridge. Added to Thesaurus in 1989.
DSDP Site 544  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 79
 ...DSDP Site 544
RTMazagan Plateau
SNMazagan Plateau, off NW coast of Morocco. Added to Thesaurus in 1989.
DSDP Site 545  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 79
 ...DSDP Site 545
RTMazagan Plateau
SNMazagan Plateau, off NW coast of Morocco. Added to Thesaurus in 1989.
DSDP Site 546  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 79
 ...DSDP Site 546
RTMazagan Plateau
SNMazagan Plateau, off NW coast of Morocco. Added to Thesaurus in 1989.
DSDP Site 547  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 79
 ...DSDP Site 547
RTNorth Atlantic
 Mazagan Plateau
SNLocated to the west of the Mazagan Plateau, off the NW coast of Morocco. Added to Thesaurus in 1989.
DSDP Site 548  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 80
 ...DSDP Site 548
RTGoban Spur
SNGoban Spur, near Pendragon Escarpment in NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 549  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 80
 ...DSDP Site 549
RTNorth Atlantic
 Goban Spur
SNOff Goban Spur, NE Atlantic. Added to Thesaurus in 1993.
DSDP Site 55  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 55
RTNorthwest Pacific
SNCaroline Ridge, SE of Mariana Arc, NW Pacific.
DSDP Site 550  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 80
 ...DSDP Site 550
RTNorth Atlantic
 Goban Spur
SNLocated 10 km SW of Goban Spur in NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 551  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 80
 ...DSDP Site 551
RTNorth Atlantic
 Goban Spur
SNLocated about 5 km SW of Goban Spur in NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 552  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 81
 ...DSDP Site 552
RTRockall Plateau
SNW Rockall Plateau, NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 553  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 81
 ...DSDP Site 553
RTRockall Plateau
SNW Rockall Plateau, NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 554  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 81
 ...DSDP Site 554
RTRockall Plateau
SNW Rockall Plateau, NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 555  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 81
 ...DSDP Site 555
RTRockall Plateau
SNW Rockall Plateau, NE Atlantic. Added to Thesaurus in 1989.
DSDP Site 556  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 82
 ...DSDP Site 556
RTNorth Atlantic
 Mid-Atlantic Ridge
 Azores
SNW flank of Mid-Atlantic Ridge near the Azores, N Atlantic. Added to Thesaurus in 1989.
DSDP Site 558  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 82
 ...DSDP Site 558
RTNorth Atlantic
 Mid-Atlantic Ridge
 Azores
SNW flank of Mid-Atlantic Ridge about 30 miles S of Pico fracture zone, near the Azores in N Atlantic. Added to Thesaurus in 1989.
DSDP Site 56  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 56
RTNorthwest Pacific
SNCaroline Ridge, SE of Mariana Trench, NW Pacific.
DSDP Site 561  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 82
 ...DSDP Site 561
RTNorth Atlantic
 Mid-Atlantic Ridge
 Azores
SNW flank of Mid-Atlantic Ridge, between Hayes and Oceanographer fracture zones. Near the Azores in N Atlantic. Added to Thesaurus in 1989.
DSDP Site 562  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 82
 ...DSDP Site 562
RTNorth Atlantic
 Mid-Atlantic Ridge
 Azores
 Hayes fracture zone
SNW flank of Mid-Atlantic Ridge, about 60 miles S of the Hayes fracture zone. Near the Azores in N Atlantic. Added to Thesaurus in 1989.
DSDP Site 563  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 82
 ...DSDP Site 563
RTNorth Atlantic
 Mid-Atlantic Ridge
 Azores
 Hayes fracture zone
SNW flank of Mid-Atlantic Ridge, S of Hayes fracture zone, near the Azores in N Atlantic. Added to Thesaurus in 1989.
DSDP Site 564  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 82
 ...DSDP Site 564
RTNorth Atlantic
 Mid-Atlantic Ridge
 Azores
 Hayes fracture zone
SNW flank of Mid-Atlantic Ridge, S of Hayes fracture zone. Near Azores in N Atlantic. Added to Thesaurus in 1989.
DSDP Site 565  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 84
 ...DSDP Site 565
RTEquatorial Pacific
 ODP Site 1040
 Middle America Trench
SNMiddle America Trench, off Nicoya Peninsula, Costa Rica, NE Pacific. Added to Thesaurus in 1993.
DSDP Site 566  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 84
 ...DSDP Site 566
RTNortheast Pacific
 Middle America Trench
SNMiddle America Trench, off S Guatemala, NE Pacific.
DSDP Site 567  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 84
 ...DSDP Site 567
RTNortheast Pacific
 Middle America Trench
SNMiddle America Trench off coast of Guatemala.
DSDP Site 568  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 84
 ...DSDP Site 568
RTMiddle America Trench
SNMiddle America Trench upper slope, off Guatemala, NE Pacific. Added to Thesaurus in 1993.
DSDP Site 57  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 57
RTNorthwest Pacific
SNCaroline Ridge, SE of Mariana Trench, NW Pacific.
DSDP Site 570  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 84
 ...DSDP Site 570
RTMiddle America Trench
SNMiddle America Trench upper slope, off Guatemala, NE Pacific. Added to Thesaurus in 1993.
DSDP Site 571  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 85
 ...DSDP Site 571
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific.
DSDP Site 572  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 85
 ...DSDP Site 572
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific. Added to Thesaurus in 1989.
DSDP Site 573  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 85
 ...DSDP Site 573
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific. Added to Thesaurus in 1989.
DSDP Site 574  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 85
 ...DSDP Site 574
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific. Added to Thesaurus in 1989.
DSDP Site 575  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 85
 ...DSDP Site 575
RTNortheast Pacific
 Equatorial Pacific
SNS of Clipperton fracture zone, NE Equatorial Pacific. Added to Thesaurus in 1993.
DSDP Site 576  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 86
 ...DSDP Site 576
RTNorthwest Pacific
SNLocated approximately 300 km E of the Shatsky Rise, NW Pacific. Added to Thesaurus in 1989.
DSDP Site 577  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 86
 ...DSDP Site 577
RTShatsky Rise
SNW flank of Shatsky Rise, central NW Pacific. Before 1984, also search Site 577 AND Deep Sea Drilling Project. Added to Thesaurus in 1993.
DSDP Site 578  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 86
 ...DSDP Site 578
RTNorthwest Pacific
SNS Northwest Pacific Basin, NW Pacific. Before 1984, also search Site 578 AND Deep Sea Drilling Project. Added to Thesaurus in 1993.
DSDP Site 579  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 86
 ...DSDP Site 579
RTNorthwest Pacific
SNCentral Northwest Pacific Basin. Before 1984, also search Site 579 AND Deep Sea Drilling Project. Added to Thesaurus in 1993.
DSDP Site 58  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 58
RTNorthwest Pacific
SNN flank of Caroline Ridge, SE of Mariana Trench, NW Pacific.
DSDP Site 580  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 86
 ...DSDP Site 580
RTNorthwest Pacific
SNN Northwest Pacific Basin. Before 1984, also search Site 580 AND Deep Sea Drilling Project. Added to Thesaurus in 1993.
DSDP Site 581  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 86
 ...DSDP Site 581
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 88
 ...DSDP Site 581
RTNorthwest Pacific
SNLocated in Hokkaido fracture zone, NW Pacific. This term has multiple hierarchies. Added to Thesaurus in 1989.
DSDP Site 582  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 87
 ...DSDP Site 582
RTNankai Trough
SNOff SW coast of Japan in Nankai Trough, NW Pacific Ocean. Added to Thesaurus in 1989.
DSDP Site 583  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 87
 ...DSDP Site 583
RTNankai Trough
SNOff SW coast of Japan in Nankai Trough, NW Pacific. Added to Thesaurus in 1989.
DSDP Site 584  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 87
 ...DSDP Site 584
RTHonshu
 Japan Trench
SNOff N Honshu in Japan Trench, NW Pacific. Added to Thesaurus in 1989.
DSDP Site 585  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 89
 ...DSDP Site 585
RTEast Mariana Basin
SNEast Mariana Basin, NW Pacific. Added to Thesaurus in 1989.
DSDP Site 586  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 89
 ...DSDP Site 586
RTSouthwest Pacific
 Equatorial Pacific
 Ontong Java Plateau
SNNE slope of Ontong Java Plateau, Equatorial Pacific. Added to Thesaurus in 1989.
DSDP Site 587  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 90
 ...DSDP Site 587
RTSouthwest Pacific
SNS Landsdowne Bank, SW Pacific. Added to Thesaurus in 1989.
DSDP Site 588  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 90
 ...DSDP Site 588
RTLord Howe Rise
SNN Lord Howe Rise, SW Pacific. Added to Thesaurus in 1989.
DSDP Site 589  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 90
 ...DSDP Site 589
RTLord Howe Rise
SNCentral Lord Howe Rise, SW Pacific. Added to Thesaurus in 1989.
DSDP Site 59  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 59
RTNorthwest Pacific
SNAbyssal plain just E of Mariana Trench, NW Pacific.
DSDP Site 590  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 90
 ...DSDP Site 590
RTLord Howe Rise
SNCentral Lord Howe Rise, SW Pacific. Added to Thesaurus in 1989.
DSDP Site 591  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 90
 ...DSDP Site 591
RTLord Howe Rise
SNE Lord Howe Rise, SW Pacific. Added to Thesaurus in 1989.
DSDP Site 592  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 90
 ...DSDP Site 592
RTLord Howe Rise
SNS Lord Howe Rise, SW Pacific. Added to Thesaurus in 1989.
DSDP Site 593  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 90
 ...DSDP Site 593
RTLeg 29
 Challenger Plateau
 DSDP Site 284
SNLocated on Challenger Plateau, NW of New Zealand in SW Pacific. Reoccupation of DSDP Site 284 in Leg 29. Added to Thesaurus in 1989.
DSDP Site 594  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 90
 ...DSDP Site 594
RTSouthwest Pacific
 Chatham Rise
SNS Chatham Rise, E of New Zealand's South Island in SW Pacific. Added to Thesaurus in 1989.
DSDP Site 595  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 91
 ...DSDP Site 595
RTSoutheast Pacific
 Tonga Trench
SNE of Tonga Trench in SE Pacific. Added to Thesaurus in 1989.
DSDP Site 596  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 91
 ...DSDP Site 596
RTSoutheast Pacific
 Tonga Trench
SNE of Tonga Trench in SE Pacific. Added to Thesaurus in 1989.
DSDP Site 597  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 92
 ...DSDP Site 597
RTSoutheast Pacific
 East Pacific Rise
 Tahiti
SNW flank of East Pacific Rise near Tahiti. SE Pacific. Added to Thesaurus in 1989.
DSDP Site 598  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 92
 ...DSDP Site 598
RTSoutheast Pacific
 East Pacific Rise
 Tahiti
SNEast Pacific Rise, E of Tahiti in SE Pacific. Added to Thesaurus in 1989.
DSDP Site 599  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 92
 ...DSDP Site 599
RTSoutheast Pacific
 East Pacific Rise
 Tahiti
SNEast Pacific Rise, E of Tahiti in S Pacific. Added to Thesaurus in 1989.
DSDP Site 6  search
BTDeep Sea Drilling Project
 .Leg 1
 ..DSDP Site 6
RTBermuda Rise
SNBermuda Rise, NW Atlantic.
DSDP Site 60  search
BTDeep Sea Drilling Project
 .Leg 6
 ..DSDP Site 60
RTPhilippine Sea
 Mariana Trench
SNW wall of Mariana Trench, NW Pacific.
DSDP Site 600  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 92
 ...DSDP Site 600
RTSoutheast Pacific
 East Pacific Rise
 Tahiti
SNEast Pacific Rise, E of Tahiti in SE Pacific. Added to Thesaurus in 1989.
DSDP Site 601  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 92
 ...DSDP Site 601
RTSoutheast Pacific
 East Pacific Rise
 Tahiti
SNEast Pacific Rise, E of Tahiti in SE Pacific. Added to Thesaurus in 1989.
DSDP Site 602  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 92
 ...DSDP Site 602
RTSoutheast Pacific
 East Pacific Rise
 Tahiti
SNEast Pacific Rise, E of Tahiti in SE Pacific. Added to Thesaurus in 1989.
DSDP Site 603  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 95
 ...DSDP Site 603
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 93
 ...DSDP Site 603
RTNorth Atlantic
 Blake-Bahama Formation
 Dry Branch Formation
 Hatteras Formation
SNAbout 270 miles E of Cape Hatteras, North Carolina, on lower continental rise in NW Atlantic. This term has multiple hierarchies. Added to Thesaurus in 1989.
DSDP Site 604  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 93
 ...DSDP Site 604
RTNorth Atlantic
 Hatteras Formation
 Hudson Canyon
SNUpper continental rise in Hudson Canyon, NW Atlantic. About 100 miles SE of Atlantic City, New Jersey. Added to Thesaurus in 1989.
DSDP Site 605  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 93
 ...DSDP Site 605
RTNorth Atlantic
 Hatteras Formation
 Hudson Canyon
SNUpper continental rise in Hudson Canyon, NW Atlantic. About 100 miles SE of Atlantic City, New Jersey. Added to Thesaurus in 1989.
DSDP Site 606  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 94
 ...DSDP Site 606
RTNorth Atlantic
 Mid-Atlantic Ridge
SNN Mid-Atlantic Ridge, WSW of the Azores, North Atlantic. Added to Thesaurus in 1993.
DSDP Site 607  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 94
 ...DSDP Site 607
RTNorth Atlantic
 Mid-Atlantic Ridge
SNN Mid-Atlantic Ridge area, NW of the Azores. Added to Thesaurus in 1993.
DSDP Site 608  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 94
 ...DSDP Site 608
RTNorth Atlantic
SNKing's Trough complex area, NE Atlantic. Added to Thesaurus in 1993.
DSDP Site 609  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 94
 ...DSDP Site 609
RTNorth Atlantic
 Mid-Atlantic Ridge
 Gibbs fracture zone
SNE flank of Mid-Atlantic Ridge, near Gibbs fracture zone, central NE central Atlantic. Added to Thesaurus in 1993.
DSDP Site 61  search
BTDeep Sea Drilling Project
 .Leg 7
 ..DSDP Site 61
RTNorthwest Pacific
 Equatorial Pacific
 Mariana Trench
SNW Equatorial Pacific, SE of the Mariana Trench. Added to Thesaurus in 1985.
DSDP Site 610  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 94
 ...DSDP Site 610
RTRockall Trough
SNFeni Ridge, Rockall Trough, NE central Atlantic. Added to Thesaurus in 1993.
DSDP Site 611  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 94
 ...DSDP Site 611
RTNorth Atlantic
SNS tip of Gardar Ridge, E of Maury Channel, NW Atlantic. Added to Thesaurus in 1993.
DSDP Site 612  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 95
 ...DSDP Site 612
RTNorth Atlantic
SNSubmarine channel, New Jersey mid-continental slope, NW Atlantic. Added to Thesaurus in 1993.
DSDP Site 613  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 95
 ...DSDP Site 613
RTNorth Atlantic
SNNear toe of upper continental rise wedge, New Jersey coast, NW Atlantic. Before 1985, also search Site 613 AND Deep Sea Drilling Project. Added to Thesaurus in 1993.
DSDP Site 614  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 96
 ...DSDP Site 614
RTMississippi Fan
SNMississippi Fan, Gulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 615  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 96
 ...DSDP Site 615
RTMississippi Fan
SNMississippi Fan, Gulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 616  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 96
 ...DSDP Site 616
RTMississippi Fan
SNMississippi Fan, Gulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 617  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 96
 ...DSDP Site 617
RTMississippi Fan
SNMississippi Fan, Gulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 618  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 96
 ...DSDP Site 618
RTOrca Basin
SNOrca Basin, Gulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 619  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 96
 ...DSDP Site 619
RTPigmy Basin
SNPigmy Basin, Gulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 62  search
BTDeep Sea Drilling Project
 .Leg 7
 ..DSDP Site 62
RTNorthwest Pacific
 Equatorial Pacific
SNW Equatorial Pacific, N of New Guinea. Added to Thesaurus in 1985.
DSDP Site 620  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 96
 ...DSDP Site 620
RTMississippi Fan
SNMississippi Fan, Gulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 621  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 96
 ...DSDP Site 621
RTMississippi Fan
SNMississippi Fan, Gulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 622  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 96
 ...DSDP Site 622
RTMississippi Fan
SNMississippi Fan, Gulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 623  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 96
 ...DSDP Site 623
RTMississippi Fan
SNMississippi Fan, Gulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 624  search
BTDeep Sea Drilling Project
 .IPOD
 ..Leg 96
 ...DSDP Site 624
RTMississippi Fan
SNMississippi Fan, Gulf of Mexico. Added to Thesaurus in 1989.
DSDP Site 625  search
SNNot a valid term for GeoRef. For sites drilled after DSDP Site 624, see under ODP Site.
DSDP Site 63  search
BTDeep Sea Drilling Project
 .Leg 7
 ..DSDP Site 63
RTNorthwest Pacific
 Equatorial Pacific
SNW Equatorial Pacific, N of New Guinea. Added to Thesaurus in 1985.
DSDP Site 64  search
BTDeep Sea Drilling Project
 .Leg 7
 ..DSDP Site 64
RTSouthwest Pacific
 Equatorial Pacific
SNW Equatorial Pacific, N of the Solomon Islands. Added to Thesaurus in 1985.
DSDP Site 65  search
BTDeep Sea Drilling Project
 .Leg 7
 ..DSDP Site 65
RTNorthwest Pacific
 Equatorial Pacific
SNCentral Equatorial Pacific, N of Kiribati. Added to Thesaurus in 1985.
DSDP Site 66  search
BTDeep Sea Drilling Project
 .Leg 7
 ..DSDP Site 66
RTNortheast Pacific
 Equatorial Pacific
SNCentral Equatorial Pacific, near Line Islands. Added to Thesaurus in 1985.
DSDP Site 67  search
BTDeep Sea Drilling Project
 .Leg 7
 ..DSDP Site 67
RTNortheast Pacific
SNN central Pacific Ocean, N of Hawaii. Added to Thesaurus in 1985.
DSDP Site 68  search
BTDeep Sea Drilling Project
 .Leg 8
 ..DSDP Site 68
RTNortheast Pacific
 Equatorial Pacific
 Clipperton fracture zone
SNE and NE of Line Islands-Johnson Island ridge, SW of Hawaiian Ridge, central Pacific. Added to Thesaurus in 1995.
DSDP Site 69  search
BTDeep Sea Drilling Project
 .Leg 8
 ..DSDP Site 69
RTNortheast Pacific
 Equatorial Pacific
SNCentral Equatorial Pacific, between Hawaii and Line Islands. Added to Thesaurus in 1985.
DSDP Site 7  search
BTDeep Sea Drilling Project
 .Leg 1
 ..DSDP Site 7
RTNorth Atlantic
 Bermuda Rise
SNBermuda Rise, NW Atlantic.
DSDP Site 70  search
BTDeep Sea Drilling Project
 .Leg 8
 ..DSDP Site 70
RTNortheast Pacific
 Equatorial Pacific
SNNE Equatorial Pacific, near Clipperton fracture zone. Added to Thesaurus in 1985.
DSDP Site 71  search
BTDeep Sea Drilling Project
 .Leg 8
 ..DSDP Site 71
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, near Clipperton fracture zone. Added to Thesaurus in 1985.
DSDP Site 72  search
BTDeep Sea Drilling Project
 .Leg 8
 ..DSDP Site 72
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, N of Marquesas Islands. Added to Thesaurus in 1985.
DSDP Site 73  search
BTDeep Sea Drilling Project
 .Leg 8
 ..DSDP Site 73
RTSoutheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, N of Marquesas Islands. Added to Thesaurus in 1985.
DSDP Site 74  search
BTDeep Sea Drilling Project
 .Leg 8
 ..DSDP Site 74
RTSoutheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, NE of Marquesas Islands. Added to Thesaurus in 1985.
DSDP Site 75  search
BTDeep Sea Drilling Project
 .Leg 8
 ..DSDP Site 75
RTSoutheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, E of Marquesas Islands. Added to Thesaurus in 1985.
DSDP Site 76  search
BTDeep Sea Drilling Project
 .Leg 9
 ..DSDP Site 76
RTSoutheast Pacific
SNN of Tuomotu Islands, SE Pacific.
DSDP Site 77  search
BTDeep Sea Drilling Project
 .Leg 9
 ..DSDP Site 77
RTNortheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, NE of Marquesas Islands. Before 1985, also search Site 77 AND Deep Sea Drilling Project. Added to Thesaurus in 1985.
DSDP Site 78  search
BTDeep Sea Drilling Project
 .Leg 9
 ..DSDP Site 78
RTNortheast Pacific
 Equatorial Pacific
SNN of Clipperton fracture zone, NE Equatorial Pacific.
DSDP Site 79  search
BTDeep Sea Drilling Project
 .Leg 9
 ..DSDP Site 79
RTNortheast Pacific
 Equatorial Pacific
SNNE Equatorial Pacific, W of the East Pacific Rise.
DSDP Site 8  search
BTDeep Sea Drilling Project
 .Leg 2
 ..DSDP Site 8
RTHatteras abyssal plain
SNNW of Bermuda, NW Atlantic.
DSDP Site 80  search
BTDeep Sea Drilling Project
 .Leg 9
 ..DSDP Site 80
RTSoutheast Pacific
 Equatorial Pacific
SNE Equatorial Pacific, W of the East Pacific Rise.
DSDP Site 81  search
BTDeep Sea Drilling Project
 .Leg 9
 ..DSDP Site 81
RTNortheast Pacific
 Equatorial Pacific
SNNE Equatorial Pacific, W of the East Pacific Rise.
DSDP Site 82  search
BTDeep Sea Drilling Project
 .Leg 9
 ..DSDP Site 82
RTNortheast Pacific
 Equatorial Pacific
SNNE Equatorial Pacific, W of the East Pacific Rise.
DSDP Site 83  search
BTDeep Sea Drilling Project
 .Leg 9
 ..DSDP Site 83
RTEquatorial Pacific
 Guatemala Basin
SNGuatemala Basin, E Equatorial Pacific, E of the East Pacific Rise.
DSDP Site 84  search
BTDeep Sea Drilling Project
 .Leg 9
 ..DSDP Site 84
RTNortheast Pacific
 Equatorial Pacific
SNNE Equatorial Pacific.
DSDP Site 85  search
BTDeep Sea Drilling Project
 .Leg 10
 ..DSDP Site 85
RTCampeche Scarp
SNCampeche Scarp. Added to Thesaurus in 1985.
DSDP Site 86  search
BTDeep Sea Drilling Project
 .Leg 10
 ..DSDP Site 86
RTCampeche Scarp
SNCampeche Scarp. Added to Thesaurus in 1985.
DSDP Site 87  search
BTDeep Sea Drilling Project
 .Leg 10
 ..DSDP Site 87
RTGulf of Mexico
SNSigsbee abyssal plain, W central Gulf of Mexico.
DSDP Site 88  search
BTDeep Sea Drilling Project
 .Leg 10
 ..DSDP Site 88
RTCampeche Scarp
SNCampeche Scarp. Added to Thesaurus in 1985.
DSDP Site 89  search
BTDeep Sea Drilling Project
 .Leg 10
 ..DSDP Site 89
RTGulf of Mexico
 Campeche Scarp
SNBay of Campeche, at foot of Campeche Scarp. Added to Thesaurus in 1985.
DSDP Site 9  search
BTDeep Sea Drilling Project
 .Leg 2
 ..DSDP Site 9
RTBermuda Rise
SNE flank, Bermuda Rise, NW Atlantic.
DSDP Site 90  search
BTDeep Sea Drilling Project
 .Leg 10
 ..DSDP Site 90
RTGulf of Mexico
SNW Gulf of Mexico. Added to Thesaurus in 1985.
DSDP Site 91  search
BTDeep Sea Drilling Project
 .Leg 10
 ..DSDP Site 91
RTSigsbee Deep
SNSigsbee Deep. Added to Thesaurus in 1985.
DSDP Site 92  search
BTDeep Sea Drilling Project
 .Leg 10
 ..DSDP Site 92
RTGulf of Mexico
SNCentral Gulf of Mexico. Added to Thesaurus in 1985.
DSDP Site 93  search
BTDeep Sea Drilling Project
 .Leg 10
 ..DSDP Site 93
RTCampeche Scarp
SNIncised canyon on Campeche Scarp, W central Gulf of Mexico.
DSDP Site 94  search
BTDeep Sea Drilling Project
 .Leg 10
 ..DSDP Site 94
RTCampeche Scarp
SNCampeche Scarp. Added to Thesaurus in 1985.
DSDP Site 95  search
BTDeep Sea Drilling Project
 .Leg 10
 ..DSDP Site 95
RTGulf of Mexico
SNE Gulf of Mexico. Added to Thesaurus in 1985.
DSDP Site 96  search
BTDeep Sea Drilling Project
 .Leg 10
 ..DSDP Site 96
RTGulf of Mexico
SNE Gulf of Mexico, NW of Cuba. Added to Thesaurus in 1985.
DSDP Site 97  search
BTDeep Sea Drilling Project
 .Leg 10
 ..DSDP Site 97
RTGulf of Mexico
SNE Gulf of Mexico, NW of Cuba. Added to Thesaurus in 1985.
DSDP Site 98  search
BTDeep Sea Drilling Project
 .Leg 11
 ..DSDP Site 98
RTBahamas
 Northeast Providence Channel
SNNortheast Providence Channel, Bahamas. Added to Thesaurus in 1995.
dspeth County Texas  search
NTQuitman Mountains
DSS  search
USEdeep seismic sounding
DST (drill stem tests)  search
USEdrill stem tests
DTA data  search
UFdifferential thermal analysis data
RTendothermic reactions
 differential thermal analysis
 data
 thermal analysis
DTM  search
SNNot a valid term for GeoRef. See digital terrain models.
du  search
Du Page County Illinois  search
BTUnited States
 .Illinois
 ..Du Page County Illinois
Dubai  search
BTAsia
 .Arabian Peninsula
 ..United Arab Emirates
 ...Dubai
SNEmirate. One of federation of 7 states at S end of Persian Gulf.
Dublin Ireland  search
BTEurope
 .Western Europe
 ..Ireland
 ...Dublin Ireland
SNCounty and city on Irish Sea in E Ireland.
Dubois County Indiana  search
BTIndiana
 .Dubois County Indiana
Dubuque County Iowa  search
BTUnited States
 .Iowa
 ..Dubuque County Iowa
Dubuque Format  search
Dubuque Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Ordovician
 ....Middle Ordovician
 .....Dubuque Formation
RTIowa
 Illinois
 Wisconsin
 Minnesota
SNNW Illinois, E Iowa, SE Minnesota and SW Wisconsin. Added to Thesaurus in 1989.
Duchesne County Utah  search
BTUnited States
 .Utah
 ..Duchesne County Utah
SNNE Utah.
Duchesne River For  search
Duchesne River Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Paleogene
 ....Duchesne River Formation
RTEocene
 Oligocene
 Utah
 Colorado
SNEocene or Oligocene. Unconformably underlies Bishop Conglomerate; unconformably overlies Uinta and Uinta (?) Formation. NW Colorado and NE Utah. Indexed with ages as applicable.
Duck North Carolina  search
BTUnited States
 .North Carolina
 ..Dare County North Carolina
 ...Duck North Carolina
RTOuter Banks
SNLocale on Bodie Island, North Carolina's Outer Banks. Indexed with Outer Banks if applicable.
Ducktown Tennessee  search
BTUnited States
 .Tennessee
 ..Polk County Tennessee
 ...Ducktown Tennessee
SNTown in extreme SE Tennessee.
ductile deformation  search
BTdeformation
 .ductile deformation
RTengineering geology
 rock mechanics
 mechanical properties
 ductility
 fracture strength
SNAdded to Thesaurus in 1989.
ductility  search
RTdeformation
 ductile deformation
 rock mechanics
Dudley England  search
BTEurope
 .Western Europe
 ..United Kingdom
 ...Great Britain
 ....England
 .....Dudley England
RTMidlands
 Northumberland England
 Staffordshire England
SNTown SW of Birmingham in West Midlands, W central England. Also occurs in other locations. Indexed with county as applicable.
Duero Basin  search
BTEurope
 .Southern Europe
 ..Iberian Peninsula
 ...Duero Basin
RTSpain
 Portugal
 Duero River
SNAdded to Thesaurus in 1981.
Duero River  search
BTEurope
 .Southern Europe
 ..Iberian Peninsula
 ...Duero River
UFDouro River
RTSpain
 Portugal
 Duero Basin
SNRiver in Spain and Portugal. Rises in central Spain, flows W to NE Portugal, then S along border, and W to Atlantic Ocean. Added to Thesaurus in 1985.
Dufek Intrusion  search
BTAntarctica
 .Dufek Intrusion
RTPensacola Mountains
SNIn the Dufek Massif area of Forrestal Range in the Pensacola Mountains of Edith Ronne Land S of the Weddell Sea.
Dufferin County Ontario  search
BTCanada
 .Eastern Canada
 ..Ontario
 ...Dufferin County Ontario
dufrenoysite  search
BTsulfosalts
 .sulfarsenites
 ..dufrenoysite
Dugger Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Carboniferous
 ....Pennsylvanian
 .....Middle Pennsylvanian
 ......Dugger Formation
RTIndiana
SNSE Indiana. Added to Thesaurus in 1989.
Dukes County Massachusetts  search
BTUnited States
 .Massachusetts
 ..Dukes County Massachusetts
Dukla Poland  search
BTEurope
 .Central Europe
 ..Poland
 ...Dukla Poland
SNTown in Krosno Province, SE Poland.
Duluth Complex  search
BTUnited States
 .Minnesota
 ..Duluth Complex
RTPrecambrian
SNIn NE Minnesota. Indexed with counties as applicable.
Duluth Minnesota  search
BTUnited States
 .Minnesota
 ..Saint Louis County Minnesota
 ...Duluth Minnesota
SNCity at extreme W end of Lake Superior in NE Minnesota.
dumortierite  search
BTsilicates
 .orthosilicates
 ..nesosilicates
 ...dumortierite
Duna River  search
USEDanube River
Dunai River  search
USEDanube River
Dunantul  search
USETransdanubia
Dunarea River  search
USEDanube River
Dunau River  search
USEDanube River
Dunbarton  search
Dunbarton Basin  search
BTUnited States
 .Dunbarton Basin
RTSouth Carolina
 Savannah River Plant
 Georgia
 Atlantic Coastal Plain
 Savannah River
SNBuried Triassic basin, Savannah River valley, Georgia and South Carolina. Indexed with counties as applicable.
Dundas County Ontario  search
BTCanada
 .Eastern Canada
 ..Ontario
 ...Dundas County Ontario
Dundee Limestone  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Devonian
 ....Middle Devonian
 .....Dundee Limestone
RTOntario
 Ohio
 Michigan
SNS Michigan, N Ohio and S Ontario. Added to Thesaurus in 1989.
Dundee Scotland  search
BTEurope
 .Western Europe
 ..United Kingdom
 ...Great Britain
 ....Scotland
 .....Dundee Scotland
RTAngus Scotland
SNCity in Angus County, Tayside region, on Firth of Tay on North Sea.
Dunderberg Shale  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Cambrian
 ....Upper Cambrian
 .....Dunderberg Shale
RTUtah
 California
 Nevada
 Nopah Formation
SNIn Nopah Formation. Added to Thesaurus in 1989.
Dundy County Nebraska  search
BTUnited States
 .Nebraska
 ..Dundy County Nebraska
dune rock  search
USEeolianite
dune structures  search
BTsedimentary structures
 .bedding plane irregularities
 ..dune structures
RTdunes
SNBefore 1984, search dunes AND sedimentary structures. Added to Thesaurus in 1984.
Dunedin New Zealand  search
BTAustralasia
 .New Zealand
 ..Otago New Zealand
 ...Dunedin New Zealand
RTSouth Island
SNCity on Pacific Ocean in SE South Island. Also index South Island.
dunes  search
NTbarchans
 coastal dunes
 continental dunes
 foredunes
 submarine dunes
UFsand dunes
RTgeomorphology
 eluvium
 antidunes
 bedding plane irregularities
 sand waves
 eolian features
 shore features
 sand ridges
 blowouts
 ergs
 sand seas
 sand sheets
 dune structures
SNAs of 1984, use dune structures for the sedimentary structure.
Dunham Dolomite  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Cambrian
 ....Lower Cambrian
 .....Dunham Dolomite
RTQuebec
 Vermont
SNS Quebec; NW and W central Vermont. Added to Thesaurus in 1989.
dunite  search
BTigneous rocks
 .plutonic rocks
 ..ultramafics
 ...peridotites
 ....dunite
Dunkard Basin  search
BTUnited States
 .Dunkard Basin
RTOhio
 Pennsylvania
 West Virginia
SNIn West Virginia, Ohio, and Pennsylvania. Structural basin. Indexed with states as applicable.
Dunkard Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Dunkard Group
RTPermian
 Pennsylvanian
 Ohio
 Pennsylvania
 Maryland
 West Virginia
SNPennsylvanian and Permian. Includes Washington and Greene formations. W Maryland, E Ohio, SW Pennsylvania, and N West Virginia. Indexed with ages as applicable.
Dunkerque France  search
USEDunkirk France
Dunkirk France  search
BTEurope
 .Western Europe
 ..France
 ...Nord France
 ....Dunkirk France
UFDunkerque France
SNCity at S end of North Sea.
Dunklin County Missouri  search
BTUnited States
 .Missouri
 ..Dunklin County Missouri
Dunlin Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Jurassic
 ....Lower Jurassic
 .....Dunlin Group
RTNorth Sea
SNIncludes Drake Formation, Cook Formation, Burton Formation, and Amundsen Formation. Added to Thesaurus in 1995.
Dunn County North Dakota  search
BTUnited States
 .North Dakota
 ..Dunn County North Dakota
SNW central North Dakota.
Dunn County Wisconsin  search
BTUnited States
 .Wisconsin
 ..Dunn County Wisconsin
SNW Wisconsin.
Dunnage Melange  search
RTDunnage Zone
 Eastern Canada
 Newfoundland
SNNorth-central Newfoundland. Before 1998, this was often used for the larger area of the Dunnage Zone. Indexed with Canadian provinces or regions as applicable.
Dunnage Terrane  search
USEDunnage Zone
Dunnage Zone  search
UFDunnage Terrane
RTQuebec
 Appalachians
 Eastern Canada
 Maine
 Scotland
 Ireland
 Newfoundland
 New England
 Caledonides
 Dunnage Melange
 Iapetus
SNOr 'terrane', Appalachian Orogen. Tectonostratigraphic zone including the Dunnage Melange of north-central Newfoundland, it is now sometimes extended to the New England Appalachians, and the Caledonides of N Ireland, and Scotland. Remains of the Iapetus O
Dunvegan Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Upper Cretaceous
 .....Cenomanian
 ......Dunvegan Formation
RTAlberta
 British Columbia
 Yukon Territory
 Northwest Territories
SNW Canada. At one time referred to as Fort Nelson Formation in the Liard River region. Added to Thesaurus in 1995.
Duperow Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Devonian
 ....Upper Devonian
 .....Duperow Formation
RTSaskatchewan
 Montana
 North Dakota
 Manitoba
 South Dakota
 Jefferson Group
SNIn Jefferson Group. North Dakota, NE Montana, NW South Dakota, Manitoba and Saskatchewan. Added to Thesaurus in 1985.
duplexes  search
RTbedding faults
 decollement
 en echelon faults
 fault zones
 faults
 imbricate tectonics
 klippen
 thrust faults
SNBefore 1993, also search duplex fault zones and duplex structures if applicable. Added to Thesaurus in 1993.
Duplin County North Carolina  search
BTUnited States
 .North Carolina
 ..Duplin County North Carolina
Duplin Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Neogene
 ....Miocene
 .....upper Miocene
 ......Duplin Formation
RTSouth Carolina
 Florida
 North Carolina
 Georgia
SNBase of Duplin is an unconformity. Florida, E Georgia, E North Carolina, and E South Carolina.
durability  search
RTdegradation
 engineering properties
 mechanical properties
 rock mechanics
 soil mechanics
SNUsed in engineering studies. Added to Thesaurus in 1989.
durain  search
BTmacerals
 .durain
BTlithotypes
 .durain
SNThis term has multiple hierarchies.
Durance Basin  search
BTEurope
 .Western Europe
 ..France
 ...Durance Basin
SNRiver basin in SE France.
Durance France  search
BTEurope
 .Western Europe
 ..France
 ...Lot-et-Garonne France
 ....Durance France
SNVillage in SW France.
Durango Mexico  search
BTMexico
 .Durango Mexico
NTMapimi Mexico
RTGuerrero Terrane
 Sierra Madre Occidental
SNState in W central Mexico. Also a city.
Durban South Africa  search
BTAfrica
 .Southern Africa
 ..South Africa
 ...KwaZulu-Natal South Africa
 ....Durban South Africa
SNCity on the Indian Ocean.
Durham County North Carolina  search
BTUnited States
 .North Carolina
 ..Durham County North Carolina
SNN central North Carolina.
Durham England  search
BTEurope
 .Western Europe
 ..United Kingdom
 ...Great Britain
 ....England
 .....Durham England
RTIngleton England
SNCounty in NE England. In 1974, parts of Durham went to form Cleveland County and Tyne and Wear County.
duricrust  search
BTsedimentary rocks
 .chemically precipitated rocks
 ..duricrust
RTsoils
 weathering
 calcrete
 caliche
 weathering crust
 ferricrete
 silcrete
Dushambe Tajikistan  search
USEDushanbe Tajikistan
Dushanbe Tajikistan  search
BTAsia
 .Tajikistan
 ..Dushanbe Tajikistan
UFDushambe Tajikistan
 Stalinabad Tajikistan
RTNurek Tajikistan
SNCity in W Tajikistan. This term has multiple hierarchies.
dust  search
BTsediments
 .clastic sediments
 ..dust
RTatmospheric transport
 volcanic ash
 terrigenous materials
 cosmic dust
 dust storms
 deflation
 interplanetary dust
dust clouds  search
SNUse dust storms or planetesimals or ash clouds if applicable.
dust clouds (volcanic)  search
USEash clouds
dust storms  search
RTatmospheric transport
 dust
 storms
SNAlso search dust clouds NOT extraterrestrial geology if applicable.
Dutch East Indies  search
USEIndonesia
Dutch Guiana  search
USESurinam
Dutch New Guinea  search
USEIrian Jaya Indonesia
Dutch West Indies  search
USENetherlands Antilles
Dutchess County New York  search
BTUnited States
 .New York
 ..Dutchess County New York
SNSE New York.
Duval County Florida  search
BTUnited States
 .Florida
 ..Duval County Florida
SNOn the Atlantic Ocean in NE Florida.
Duval County Texas  search
BTUnited States
 .Texas
 ..Duval County Texas
SNS Texas.
Duwi Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Upper Cretaceous
 .....Duwi Formation
RTEgypt
SNAdded to Thesaurus in 1989.
DVDP  search
USEDry Valley Drilling Project
Dvina River  search
BTEurope
 .Dvina River
RTLatvia
 Belarus
SNThe Western Dvina River which flows into the Gulf of Riga. As of 1995, use Northern Dvina River for the river which flows into the White Sea Basin in the Russian Federation. Indexed with former Soviet republics as applicable.
Dwyka Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...upper Paleozoic
 ....Dwyka Formation
UFDwyka Series
 Dwyka Tillite
RTTriassic
 Carboniferous
 Permian
 Africa
 Karroo Supergroup
 South Africa
 Botswana
 Namibia
 Zimbabwe
SNOf the Karroo Supergroup. Formerly referred to as Dwyka Series which included Upper Shales, Conglomerate (now Tillite), and Lower Shales. Indexed with ages as applicable. Added to Thesaurus in 1993.
Dwyka Series  search
USEDwyka Formation
Dwyka Tillite  search
USEDwyka Formation
Dy  search
USEdysprosium
dye tracers  search
RTfluorescence
 fluorimetry
 ground water
 hydrogeology
 hydrology
 surface water
 tracers
SNAdded to Thesaurus in 1982.
Dyer County Tennessee  search
BTUnited States
 .Tennessee
 ..Dyer County Tennessee
Dyfed Wales  search
BTEurope
 .Western Europe
 ..United Kingdom
 ...Great Britain
 ....Wales
 .....Dyfed Wales
NTCardiganshire Wales
 Carmarthenshire Wales
 Llandovery Wales
 Pembrokeshire Wales
RTCardigan Bay
 South Wales
SNWelsh county formed in 1974 from Cardiganshire, Pembrokeshire and Carmarthenshire. Before 1978, also search Cardigan County, Pembroke or Pembroke County, and Carmarthen County where applicable. Also search Cardiganshire, Pembrokeshire, and Carmarthenshire
dykes  search
USEdikes
dynamic  search
SNA valid term through 1977.
dynamic loading  search
BTloading
 .dynamic loading
RTrock mechanics
 soil mechanics
 deformation
 dynamics
 load pressure
SNAdded to Thesaurus in 1985.
dynamic metamorphism  search
BTmetamorphism
 .dynamic metamorphism
RTregional metamorphism
 retrograde metamorphism
SNBefore 1978, also search metamorphism AND dynamic.
dynamic properties  search
RTdynamics
 elastodynamic properties
 properties
SNAdded to Thesaurus in 1981.
dynamics  search
RTbeach profiles
 dynamic loading
 dynamic properties
 geodynamics
 kinetics
 shorelines
 soil dynamics
 static corrections
dynamo theory  search
USEdynamos
dynamos  search
UFdynamo theory
 geodynamo
RTgeophysics
 magnetic field
 Earth
 core
 interior
 patterns
SNConcept used to explain the presence and behavior of magnetic field on planetary bodies such as the Earth. Added to Thesaurus in 1989.
dyscrasite  search
BTantimonides
 .dyscrasite
dysprosium  search
BTmetals
 .rare earths
 ..dysprosium
UFDy
Dzereg Mongolia  search
USEAltan Teeli Mongolia
Dzhagdy Range  search
BTCommonwealth of Independent States
 .Russian Federation
 ..Dzhagdy Range
BTAsia
 .Dzhagdy Range
RTRussian Far East
 Khabarovsk Russian Federation
SNNW of Komsomolsk in Khabarovsk Kray in Russian Far East. This term has multiple hierarchies.
Dzhezkazgan Kazakhstan  search
BTCommonwealth of Independent States
 .Kazakhstan
 ..Karaganda Kazakhstan
 ...Dzhezkazgan Kazakhstan
RTUlu-Tau
SNTown in Karaganda Oblast in central Kazakhstan. This term has multiple hierarchies.
Dzhida River  search
BTCommonwealth of Independent States
 .Russian Federation
 ..Dzhida River
BTAsia
 .Dzhida River
RTBuryat Russian Federation
SNS of Lake Baikal in Buryatia. This term has multiple hierarchies.
Dzhugdzhur region  search
BTCommonwealth of Independent States
 .Russian Federation
 ..Dzhugdzhur region
BTAsia
 .Dzhugdzhur region
RTOkhotsk region
SNBorders the Okhotsk Sea and includes the Dzhugdzhur Range. This term has multiple hierarchies. Added to Thesaurus in 1981.
Dzhungaria  search
USEJunggar
Dzhungarian Alatau  search
BTAsia
 .Tien Shan
 ..Dzhungarian Alatau
UFDzungar Alatau
 Dzungarian Ala-Tau
 Dzungarian Alatau
RTKazakhstan
 Xinjiang China
SNNorthernmost branch of the Tien Shan. Indexed with Kazakhstan and/or Xinjiang China as applicable.
Dzirula Massif  search
BTEurope
 .Georgian Republic
 ..Dzirula Massif
SNCentral Georgian Republic.
Dzungar Alatau  search
USEDzhungarian Alatau
Dzungaria  search
USEJunggar
Dzungarian Ala-Tau  search
USEDzhungarian Alatau
Dzungarian Alatau  search
USEDzhungarian Alatau