Ga  search
USEgallium
gabbro anorthosite  search
USEgabbroic anorthosite
gabbro family  search
SNAs of 1981, no longer a valid term for GeoRef. Use gabbros or alkali gabbros as applicable.
gabbroic anorthosite  search
BTigneous rocks
 .plutonic rocks
 ..gabbros
 ...gabbroic anorthosite
UFgabbro anorthosite
RTanorthosite
gabbroic composition  search
RTcomposition
 gabbros
 igneous rocks
SNBefore 1978, search gabbroic; gabbroic rocks.
gabbros  search
BTigneous rocks
 .plutonic rocks
 ..gabbros
NTalkali gabbros
 anorthosite
 anorthositic gabbro
 gabbroic anorthosite
 labradoritite
 microgabbro
 norite
 olivine gabbro
 rodingite
 troctolite
RTgabbroic composition
 metagabbro
SNBefore 1981, search gabbro family. As of 1993, eucrite is no longer a narrower term.
Gabilan Range  search
BTUnited States
 .California
 ..Gabilan Range
RTCoast Ranges
SNOne of the Coast Ranges in W California. Indexed with Coast Ranges.
Gabon  search
BTAfrica
 .Central Africa
 ..Gabon
NTOklo
SNFormerly part of French Equatorial Africa.
Gabonella  search
BTInvertebrata
 .Protista
 ..Foraminifera
 ...Rotaliina
 ....Buliminacea
 .....Gabonella
RTmicrofossils
SNGenus. Indexed with microfossils if applicable.
gadolinite  search
BTsilicates
 .orthosilicates
 ..nesosilicates
 ...gadolinite
gadolinium  search
BTmetals
 .rare earths
 ..gadolinium
UFGd
Gadsden County Florida  search
BTUnited States
 .Florida
 ..Gadsden County Florida
SNNW Florida.
Gage County Nebraska  search
BTUnited States
 .Nebraska
 ..Gage County Nebraska
gahnite  search
BToxides
 .gahnite
UFzinc spinel
RTspinel group
Gaia hypothesis  search
RTbiochemistry
 biologic evolution
 biosphere
 climate
 Earth
 ecology
 ecosystems
 environmental geology
 geochemical cycle
 greenhouse effect
 paleoatmosphere
 planetology
SNOr theory that the presence of living organisms on a planet leads to major modifications of planetary physical and chemical conditions, and that following the establishment of life, the climate and major biogeochemical cycles are mediated by living organi
Gailtal Alps  search
BTEurope
 .Alps
 ..Gailtal Alps
BTEurope
 .Central Europe
 ..Austria
 ...Gailtal Alps
RTEastern Alps
 Carinthia Austria
SNS Austria. This term has multiple hierarchies.
Gaines County Texas  search
BTUnited States
 .Texas
 ..Gaines County Texas
RTCentral Basin Platform
 Ashmore Meteorite
SNNW Texas.
Gairloch Scotland  search
BTghland region Scotland
 .Gairloch Scotland
SNTown in NW Scotland.
gaize  search
BTsedimentary rocks
 .clastic rocks
 ..gaize
RTclastic sediments
 sandstone
Gakkel Ridge  search
USEMid-Arctic Ocean Ridge
Galaico Massif  search
RTGalicia Spain
 Spain
SNIndexed with Spain if applicable. Added to Thesaurus in 1981.
Galapagos Islands  search
BTEast Pacific Ocean Islands
 .Galapagos Islands
NTChaves Island
UFColon Archipelago
RTSouth America
 Ecuador
 Seymour Island
SNA territory of Ecuador about 600 miles W of mainland.
Galapagos Rift  search
BTPacific Ocean
 .East Pacific
 ..Galapagos Rift
UFGalapagos spreading center
RTplate tectonics
 mid-ocean ridges
 Northeast Pacific
 Equatorial Pacific
 Nazca Plate
 Cocos Plate
 East Pacific Rise
 Leg 54
 Leg 83
 Hess Deep
 Leg 147
SNE Equatorial Pacific. Separates the Cocos and Nazca tectonic plates. Forms triple junction with the East Pacific Rise. Added to Thesaurus in 1981.
Galapagos spreading center  search
USEGalapagos Rift
Gale  search
galena  search
BTsulfides
 .galena
UFblue lead
 galenite
 lead glance
RTlead ores
Galena Dolomite  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Ordovician
 ....Middle Ordovician
 .....Galena Dolomite
RTIowa
 Illinois
 Wisconsin
 Minnesota
SNN Illinois, E Iowa, S Minnesota and SW Wisconsin. Added to Thesaurus in 1985.
galenite  search
USEgalena
galenobismutite  search
BTsulfosalts
 .sulfobismuthites
 ..galenobismutite
Galeoidea  search
BTChordata
 .Vertebrata
 ..Pisces
 ...Chondrichthyes
 ....Elasmobranchii
 .....Selachii
 ......Galeoidea
NTLamnidae
SNSuborder.
Galeras  search
BTSouth America
 .Andes
 ..Galeras
BTSouth America
 .Colombia
 ..Galeras
RTvolcanoes
SNAndean volcano, Narino state, SW Colombia. This term has multiple hierarchies.
Galerkin analysis  search
USEGalerkin method
Galerkin me  search
Galerkin method  search
UFGalerkin analysis
RTmathematical geology
 mathematical methods
 finite element analysis
SNAdded to Thesaurus in 1989.
Galesville Sandstone  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Cambrian
 ....Upper Cambrian
 .....Galesville Sandstone
RTIowa
 Wisconsin
 Minnesota
SNWisconsin, Iowa and S Minnesota. Added to Thesaurus in 1989.
Galezice  search
BTEurope
 .Central Europe
 ..Poland
 ...Galezice
RTKielce Poland
 Swiety Krzyz Mountains
SNSyncline in the Swiety Krzyz Mountains between Vistula River and Pilica River in SE central Poland.
Galice Formation  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Jurassic
 ....Upper Jurassic
 .....Galice Formation
RTCalifornia
 Oregon
SNSW Oregon and N California. Added to Thesaurus in 1985.
Galicia  search
SNNo longer a valid term for GeoRef. See Galicia Spain. For the former Austrian crownland now in SE Poland and NW Ukraine, see Galitsiya.
Galicia Spain  search
BTEurope
 .Southern Europe
 ..Iberian Peninsula
 ...Spain
 ....Galicia Spain
NTArosa Bay
 La Coruna Spain
 Lugo Spain
 Orense Spain
 Pontevedra Spain
RTCantabrian Mountains
 Galaico Massif
 Galitsiya
SNRefers to only the autonomous community and ancient kingdom in NW Spain.
Galilean satellites  search
RTCallisto Satellite
 Europa Satellite
 Ganymede Satellite
 icy satellites
 Io Satellite
 Jupiter
 satellites
SNIncludes Callisto, Europa, Ganymede, and Io.
Galilee  search
BTAsia
 .Middle East
 ..Israel
 ...Galilee
RTHaifa Bay
SNHilly region of N Israel.
Galilee Basin  search
RTIsrael
 Queensland Australia
 Sea of Galilee
SNStructural basin in central Queensland. Also in Israel. Indexed with state or region as applicable. Added to Thesaurus in 1981.
Galileo Progra  search
Galileo Program  search
RTextraterrestrial geology
 Gaspra Asteroid
 Ida Asteroid
 Jupiter
 Magellan Program
 Moon
 planetology
 remote sensing
 Venus
 Vesta Asteroid
SNAdded to Thesaurus in 1995.
Galitsiya  search
BTEurope
 .Galitsiya
RTPoland
 Galicia Spain
 Ukraine
 Przemysl Poland
 Rzeszow Poland
SNFormer Austrian crownland now in SE Poland and NW Ukraine. Before 1981, also search Galicia AND Poland; Galicia AND Ukraine. Added to Thesaurus in 1981.
Gallatin County Illinois  search
BTUnited States
 .Illinois
 ..Gallatin County Illinois
SNSE Illinois.
Gallatin County Kentucky  search
BTUnited States
 .Kentucky
 ..Gallatin County Kentucky
SNN Kentucky.
Gallatin County Montana  search
BTUnited States
 .Montana
 ..Gallatin County Montana
NTHebgen Lake
 Three Forks Montana
RTBridger Range
 Gallatin Range
 Hebgen Lake earthquake 1959
 Madison Range
 Spanish Peaks
SNSW Montana.
Gallatin Range  search
BTUnited States
 .Gallatin Range
RTWyoming
 Montana
 Gallatin County Montana
 Park County Montana
 Yellowstone National Park
 Park County Wyoming
SNIndexed with states and counties as applicable.
Gallia County Ohio  search
BTUnited States
 .Ohio
 ..Gallia County Ohio
Galliformes  search
BTChordata
 .Vertebrata
 ..Tetrapoda
 ...Aves
 ....Neornithes
 .....Galliformes
SNOrder.
gallium  search
BTmetals
 .gallium
UFGa
Gallivare Sweden  search
BTEurope
 .Western Europe
 ..Scandinavia
 ...Sweden
 ....Norrbotten Sweden
 .....Gallivare Sweden
UFGellnare
SNVillage N of the Arctic Circle.
Galloway Scotland  search
BTEurope
 .Western Europe
 ..United Kingdom
 ...Great Britain
 ....Scotland
 .....Galloway Scotland
SNDistrict in SW Scotland. Now part of Dumfries and Galloway region.
Gallup Sandstone  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Upper Cretaceous
 .....Gallup Sandstone
RTNew Mexico
 Mesaverde Group
SNIn Mesaverde Group. NW New Mexico.
Galunggung  search
BTAsia
 .Far East
 ..Indonesia
 ...Java
 ....Galunggung
RTvolcanoes
SNVolcano, W Java.
Galveston Bay  search
BTUnited States
 .Texas
 ..Galveston Bay
RTEast Bay
SNInlet of Gulf of Mexico protected from gulf by Galveston Island and Bolivar Peninsula. Indexed with counties as applicable.
Galveston County Texas  search
BTUnited States
 .Texas
 ..Galveston County Texas
NTGalveston Island
 Galveston Texas
RTHigh Island
SNS Texas.
Galveston Island  search
BTUnited States
 .Texas
 ..Galveston County Texas
 ...Galveston Island
RTGalveston Texas
SN30 mile long island at the entrance of Galveston Bay.
Galveston Texas  search
BTUnited States
 .Texas
 ..Galveston County Texas
 ...Galveston Texas
RTGalveston Island
SNCity on Galveston Island in the Gulf of Mexico, S Texas.
Galway Granite  search
BTEurope
 .Western Europe
 ..Ireland
 ...Galway Ireland
 ....Galway Granite
RTDevonian
 Connemara
SNConnemara District in W Galway.
Galway Ireland  search
BTEurope
 .Western Europe
 ..Ireland
 ...Galway Ireland
NTConnemara
 Galway Granite
 Tynagh Ireland
SNCounty including the city in W Ireland.
Gambia  search
BTAfrica
 .West Africa
 ..Gambia
NTGeorgetown Gambia
Gambier Embayment  search
BTAustralasia
 .Australia
 ..Gambier Embayment
RTSouth Australia
 Victoria Australia
SNIndexed with states as applicable.
gamma ray  search
SNA valid term through 1977. After 1977 use gamma-ray spectroscopy or gamma-ray methods.
gamma rays  search
UFrays, gamma
RTcosmic rays
 alpha rays
 beta rays
 radioactivity
 X-rays
 gamma-ray spectroscopy
 electromagnetic radiation
 gamma-gamma methods
 gamma-ray methods
 gamma-ray spectra
 neutron-gamma methods
 scintillations
SNUse when referring to the rays themselves.
gamma-gamma methods  search
RTgamma rays
 gamma-ray methods
 geophysical methods
 neutron-gamma methods
 radioactivity
 well-logging
SNBefore 1978, search gamma-gamma. Indexed with well-logging if applicable.
gamma-ray methods  search
RTgamma rays
 gamma-gamma methods
 gamma-ray spectroscopy
 geophysical methods
 neutron-gamma methods
 radioactivity
 radioactivity methods
 well-logging
SNBefore 1978, search gamma ray or gamma-ray.
gamma-ray spectra  search
BTspectra
 .gamma-ray spectra
RTspectroscopy
 gamma rays
 gamma-ray spectroscopy
SNUsed for data. For methodology, use gamma-ray spectroscopy. Added to Thesaurus in 1985.
gamma-ray spectrometry  search
SNA valid term through 1978. After 1978, see gamma-ray spectroscopy.
gamma-ray spectroscopy  search
BTspectroscopy
 .gamma-ray spectroscopy
RTchemical analysis
 well-logging
 analysis
 alpha-ray spectroscopy
 gamma rays
 radioactivity
 gamma-ray methods
 gamma-ray spectra
SNBefore 1978, also search spectroscopy AND gamma ray.
gammacerane  search
BTorganic compounds
 .hydrocarbons
 ..triterpanes
 ...gammacerane
RTbiomarkers
SNPentacyclic triterpane.
Gammon Ferruginous Member  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Upper Cretaceous
 .....Gammon Ferruginous Member
RTWyoming
 Montana
 South Dakota
 Pierre Shale
SNOf Pierre Shale. NE Wyoming, SE Montana and NW South Dakota. Added to Thesaurus in 1985.
Gander Lake Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...Ordovician
 ....Gander Lake Group
RTCanada
 Newfoundland Island
Gander Zone  search
BTCanada
 .Eastern Canada
 ..Gander Zone
RTNewfoundland Island
 New Brunswick
 Nova Scotia
SNEastern Canada. Indexed with provinces as applicable. Added to Thesaurus in 1985.
Gandja Azerbaijan  search
USEKirovabad Azerbaijan
Gandzha Azerbaijan  search
USEKirovabad Azerbaijan
Ganga River  search
USEGanges River
Gangamopteris  search
BTPlantae
 .Spermatophyta
 ..Gymnospermae
 ...Glossopteridales
 ....Gangamopteris
RTGlossopteris
SNGenus.
Ganges River  search
BTAsia
 .Ganges River
UFGanga River
RTIndia
 Bangladesh
SNSacred river which rises in the Himalayas and flows into the Bay of Bengal. Indexed with countries as applicable.
Gangpur Series  search
BTChronostratigraphic Units
 .Precambrian
 ..Archean
 ...Gangpur Series
RTIndia
 Orissa India
SNSubdivided into Ghoriajor Stage, Kumarmunda Stage, Birmitrapur Stage, and Laingar Stage.
gangue  search
RTmineral deposits, genesis
Gansu China  search
BTAsia
 .Far East
 ..China
 ...Gansu China
NTLanzhou China
UFKansu China
RTHaiyuan earthquake 1920
 Huang He
 Loess Plateau
 Ordos Basin
 Qilian Mountains
 Qinling Mountains
SNProvince, NW China.
Ganymede Satellite  search
RTGalilean satellites
 icy satellites
 Jupiter
 satellites
 Voyager Program
SNOne of the satellites of Jupiter. Before 1985, also search Ganymede AND Jupiter. Added to Thesaurus in 1985.
gaps, stratigraphic  search
USEstratigraphic gaps
Gard France  search
BTEurope
 .Western Europe
 ..France
 ...Gard France
NTAles France
RTAigoual Massif
 Cevennes
SNDepartment in S France.
Garden Banks  search
BTAtlantic Ocean
 .North Atlantic
 ..Gulf of Mexico
 ...Garden Banks
UFFlower Garden Banks
RTLouisiana
 Texas
SNN Gulf of Mexico, offshore Louisiana and Texas. Also search East Flower Garden Bank and West Flower Garden Bank.
Garden County Nebraska  search
BTUnited States
 .Nebraska
 ..Garden County Nebraska
RTBeaver Lake
SNW Nebraska.
Garfield County Colorado  search
BTUnited States
 .Colorado
 ..Garfield County Colorado
NTAnvil Points Mine
 Rifle Colorado
RTBook Cliffs
 White River Plateau
SNW Colorado.
Garfield County Montana  search
BTUnited States
 .Montana
 ..Garfield County Montana
SNE central Montana.
Garfield County Nebraska  search
BTUnited States
 .Nebraska
 ..Garfield County Nebraska
SNCentral Nebraska.
Garfield County Oklahoma  search
BTUnited States
 .Oklahoma
 ..Garfield County Oklahoma
SNN Oklahoma.
Garfield County Utah  search
BTUnited States
 .Utah
 ..Garfield County Utah
RTCanyonlands National Park
 Lake Powell
 Henry Mountains
SNS Utah.
Garfield County Washington  search
BTUnited States
 .Washington
 ..Garfield County Washington
SNSE Washington.
Gargano  search
BTEurope
 .Southern Europe
 ..Italy
 ...Apulia Italy
 ....Gargano
UFMonte Gargano
SNMountain promontory extending into Adriatic Sea in NE Apulia.
Gargasian  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Lower Cretaceous
 .....Gargasian
RTAptian
SNSubstage in Switzerland: upper Aptian; above Bedoulian Substage.
Garhwal Group  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Paleozoic
 ...upper Paleozoic
 ....Garhwal Group
RTIndia
 Himalayas
SNChamoli window, in Tehri Garhwal, Uttar Pradesh India. Name substituted for the Barahat Series.
Garhwal Himalaya  search
USEGarhwal Himalayas
Garhwal Himalayas  search
BTAsia
 .Indian Peninsula
 ..India
 ...Uttar Pradesh India
 ....Garhwal Himalayas
BTAsia
 .Himalayas
 ..Garhwal Himalayas
UFGarhwal Himalaya
RTUttarkashi earthquake 1991
SNN Uttar Pradesh, India. This term has multiple hierarchies. Added to Thesaurus in 1985.
Garhwal India  search
BTAsia
 .Indian Peninsula
 ..India
 ...Uttar Pradesh India
 ....Garhwal India
UFGurhwal India
SNDistrict in N Uttar Pradesh.
Garian Libya  search
BTAfrica
 .North Africa
 ..Libya
 ...Garian Libya
UFGharian Libya
RTTripolitania
SNTown in extreme NW Libya.
Garland County Arkansas  search
BTUnited States
 .Arkansas
 ..Garland County Arkansas
SNCentral Arkansas.
Garlock Fault  search
BTUnited States
 .California
 ..Garlock Fault
SNRuns E-W in S central California. Indexed with counties or regions as applicable.
Garm Tajikistan  search
BTAsia
 .Tajikistan
 ..Garm Tajikistan
SNTown and former oblast in N central Tajikistan. This term has multiple hierarchies.
Garn Formation  search
RTBajocian
 Bathonian
 Middle Jurassic
 North Atlantic
 Norwegian Sea
SNMiddle Jurassic. In Fangst Group. Haltenbanken, Nowegian continental shelf, Norwegian Sea. May also occur in other locations. Indexed with age as applicable. Added to Thesaurus in 1995.
garnet  search
SNAs of 1981, no longer a valid term for GeoRef. See garnet group. Use garnet deposits for garnet as a commodity.
garnet deposits  search
RTabrasives
 garnet group
 heavy mineral deposits
 industrial minerals
SNBefore 1981, also search garnet. Indexed with with industrial minerals or gems for use as a commodity.
garnet group  search
BTsilicates
 .orthosilicates
 ..nesosilicates
 ...garnet group
NTalmandine
 andradite
 grossular
 hydrogrossular
 majorite
 melanite
 pyrope
 schorlomite
 spessartine
 uvarovite
 vanadium garnet
RTgarnet deposits
 gems
SNAlso search garnet.
garnet lherzolite  search
BTigneous rocks
 .plutonic rocks
 ..ultramafics
 ...peridotites
 ....garnet lherzolite
RTlherzolite
garnet peridotite  search
BTigneous rocks
 .plutonic rocks
 ..ultramafics
 ...peridotites
 ....garnet peridotite
garnet pyroxenite  search
BTigneous rocks
 .plutonic rocks
 ..ultramafics
 ...garnet pyroxenite
RTpyroxenite
garnetite  search
BTmetamorphic rocks
 .garnetite
SNAdded to Thesaurus in 1981.
Garnett Kansas  search
BTUnited States
 .Kansas
 ..Anderson County Kansas
 ...Garnett Kansas
SNCity in E Kansas.
garnierite  search
BTsilicates
 .sheet silicates
 ..serpentine group
 ...garnierite
UFnepouite
RTnickel ores
Garo Hills  search
BTAsia
 .Indian Peninsula
 ..India
 ...Northeastern India
 ....Meghalaya India
 .....Garo Hills
RTAssam India
SNIn Meghalaya state, at bend of Brahmaputra River in NE India.
Garonne River  search
BTEurope
 .Western Europe
 ..France
 ...Garonne River
RTGironde France
SNSW France.
Garrard County Kentucky  search
BTUnited States
 .Kentucky
 ..Garrard County Kentucky
garrelsite  search
BTsilicates
 .orthosilicates
 ..nesosilicates
 ...garrelsite
Garrett County Maryland  search
BTUnited States
 .Maryland
 ..Garrett County Maryland
RTSavage River
SNExtreme W Maryland.
garronite  search
BTsilicates
 .framework silicates
 ..zeolite group
 ...garronite
Garvin County Oklahoma  search
BTUnited States
 .Oklahoma
 ..Garvin County Oklahoma
SNS Central Oklahoma.
Garza County Texas  search
BTUnited States
 .Texas
 ..Garza County Texas
SNNW Texas.
gas  search
SNA valid index term through 1977 used in combination with natural (i.e. gas, natural). After 1977, use natural gas.
gas chromatograms  search
UFgas chromatographic analyses
 gas chromatographs
 gas chromatography data
RTgas chromatography
 chromatograms
 fragmentograms
SNUse for data. Use gas chromatography for methodology. Added to Thesaurus in 1985.
gas chromatographic analyses  search
USEgas chromatograms
gas chromatographs  search
USEgas chromatograms
gas chromatography  search
RTchemical composition
 chromatography
 gas chromatograms
 gases
 ion chromatography
 radon emanometry
SNNot a valid term from 1975-1977.
gas chromatography data  search
USEgas chromatograms
gas condensates  search
USEcondensates
gas fields  search
USEoil and gas fields
Gas Hills  search
BTUnited States
 .Wyoming
 ..Gas Hills
RTFremont County Wyoming
 Natrona County Wyoming
SNFremont and Natrona counties in central Wyoming. Indexed with county as applicable.
gas hydrates  search
UFhydrates, gas
RTbottom-simulating reflectors
 clathrates
 natural gas
 gas seeps
 condensates
 hydrates
SNAdded to Thesaurus in 1985.
gas injection  search
RTenhanced recovery
 fluid injection
 injection
 oil wells
 petroleum engineering
 reinjection wells
 tertiary recovery
SNAdded to Thesaurus in 1985.
gas phase  search
USEgaseous phase
gas sands  search
BTsedimentary rocks
 .gas sands
RTorganic compounds
 energy sources
 natural gas
 oil sands
 tight sands
SNAdded to Thesaurus in 1989.
gas seeps  search
UFseeps, gas
RTseepage
 oil seeps
 gas hydrates
 natural gas
 cold seeps
SNFor oil and gas, use oil seeps. Also search seepage and natural gas. Added to Thesaurus in 1995.
gas storage  search
RTengineering geology
 natural gas
 oil storage
 petroleum engineering
 storage
 underground installations
 underground storage
 underground storage tanks
gas-water interface  search
UFwater-gas interface
RTinterfaces
 water
 gases
 natural gas
 oil-water interface
SNBefore 1998, also search oil-water interface AND natural gas if applicable.
Gasconade County Missouri  search
BTUnited States
 .Missouri
 ..Gasconade County Missouri
Gascoyne abyssal plain  search
BTIndian Ocean
 .Gascoyne abyssal plain
RTLeg 123
 DSDP Site 260
 ODP Site 766
SNOff western Australia.
gaseous phase  search
UFgas phase
 phase, gaseous
RTgeochemistry
 Henry's law
 boiling
 bubbles
 liquid phase
 gases
 fluid phase
 solid phase
 gasification
gases  search
RTbubbles
 Darcy's law
 effusion
 fluid inclusions
 fumaroles
 gas chromatography
 gas-water interface
 gaseous phase
 gasification
 Henry's law
 hydrogen sulfide
 magmas
 mining geology
 natural gas
 nitrogen dioxide
 nitrous oxide
 noble gases
 nuees ardentes
 oil-gas inte
SNNot used for the commodity natural gas.
gasification  search
RTcoal
 gaseous phase
 gases
 natural gas
gasoline  search
BTpetroleum products
 .gasoline
RTpollution
 organic compounds
 pollutants
 hydrocarbons
 leaking underground storage tanks
 light nonaqueous phase liquids
 underground storage tanks
SNAdded to Thesaurus in 1995.
Gaspe East  search
USEGaspe-Est County Quebec
Gaspe Est County Quebec  search
USEGaspe-Est County Quebec
Gaspe Ouest County Quebec  search
USEGaspe-Ouest County Quebec
Gaspe Peninsula  search
BTCanada
 .Eastern Canada
 ..Quebec
 ...Gaspe Peninsula
RTSaint John River
 Battery Point Formation
SNExtends into Gulf of Saint Lawrence. Before 1978, also search Gaspe Quebec.
Gaspe Quebec  search
BTCanada
 .Eastern Canada
 ..Quebec
 ...Gaspe-Est County Quebec
 ....Gaspe Quebec
SNVillage in E Quebec near E extremity of Gaspe Peninsula.
Gaspe West  search
USEGaspe-Ouest County Quebec
Gaspe-Est County Quebec  search
BTCanada
 .Eastern Canada
 ..Quebec
 ...Gaspe-Est County Quebec
NTGaspe Quebec
UFGaspe East
 Gaspe Est County Quebec
RTGaspe-Ouest County Quebec
Gaspe-Ouest County Quebec  search
BTCanada
 .Eastern Canada
 ..Quebec
 ...Gaspe-Ouest County Quebec
UFGaspe Ouest County Quebec
 Gaspe West
RTGaspe-Est County Quebec
Gaspra Asteroid  search
BTasteroids
 .S-type asteroids
 ..Gaspra Asteroid
UF951 Gaspra
RTGalileo Program
SNObject of Galileo spacecraft flyby observation in 1991. Added to Thesaurus in 1995.
gastaldite  search
USEglaucophane
Gaston County North Carolina  search
BTUnited States
 .North Carolina
 ..Gaston County North Carolina
gastroliths  search
RTPisces
 Reptilia
Gastropoda  search
BTInvertebrata
 .Mollusca
 ..Gastropoda
NTAcoela
 Archaeogastropoda
 Entomotaeniata
 Harpidae
 Mesogastropoda
 Muricacea
 Naticidae
 Neogastropoda
 Prosobranchia
 Pteropoda
 Pulmonata
 Pupillidae
 Sacoglossa
 Turritellidae
 Viviparus
SNClass.
Gates County North Carolina  search
BTUnited States
 .North Carolina
 ..Gates County North Carolina
Gates Formation  search
RTAlberta
 British Columbia
 Lower Cretaceous
SNCoal-bearing strata. Lower Cretaceous of NW Alberta and NE British Columbia. Also search Gates Member AND Canada. There is also a Gates Member in the Silurian of W New York. Indexed with age as applicable. Added to Thesaurus in 1989.
Gatineau County Quebec  search
BTCanada
 .Eastern Canada
 ..Quebec
 ...Gatineau County Quebec
NTHull Quebec
Gatineau Valley  search
BTCanada
 .Eastern Canada
 ..Quebec
 ...Gatineau Valley
SNRiver valley in SW Quebec.
gauges  search
USEgauging
gauging  search
UFgauges
RTwater
 hydrology
Gault Clay  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Mesozoic
 ...Cretaceous
 ....Lower Cretaceous
 .....Gault Clay
UFGault Formation
RTGreat Britain
SNMiddle Europe. Lower Cretaceous clay formation in Great Britain. Also search Gault.
Gault Formation  search
USEGault Clay
Gaurdak Turkmenia  search
BTAsia
 .Turkmenia
 ..Chardzhou Turkmenia
 ...Gaurdak Turkmenia
SNTown in Chardzhou Oblast in NE Turkmenia. This term has multiple hierarchies.
Gauss  search
SNFor the various mathematical/statistical concepts, use of Gaussian analysis is not recommended. Use specific concept such as Gaussian beams, Gaussian elimination, normal distribution.
Gauss Chron  search
BTChronostratigraphic Units
 .Phanerozoic
 ..Cenozoic
 ...Neogene
 ....Pliocene
 .....Gauss Chron
UFGauss Epoch
 Gauss Normal
RTpaleomagnetism
 upper Tertiary
 reversals
SNGeochronologic division based on magnetostratigraphic normal polarity unit. Mid-Pliocene. Formerly designated the Gauss Epoch.
Gauss Epoch  search
USEGauss Chron
Gauss Normal  search
USEGauss Chron
Gaussberg-Kerguelen Ridge  search
USEKerguelen Plateau
Gaussian  search
SNFor the various mathematical/statistical concepts, use of Gaussian analysis is not recommended. Use specific concept such as Gaussian beams, Gaussian elimination, normal distribution.
Gavarnie France  search
BTutes-Pyrenees France
 .Gavarnie France
SNVillage in SW France.
Gavish Sebkha  search
RTEgypt
 Sinai
 Sinai Egypt
SNIndexed with Sinai Egypt or Sinai as applicable. Added to Thesaurus in 1989.
Gavrovo Zone  search
BTEurope
 .Southern Europe
 ..Greece
 ...Peloponnesus Greece
 ....Gavrovo Zone
UFGavrovo-Tripolis Zone
RTTripolis Greece
SNCentral Peloponnesus. Also search Gavrovo.
Gavrovo-Tripolis Zone  search
USEGavrovo Zone
Gavur Mountains  search
USEAmanos Mountains
Gawler Block  search
USEGawler Craton
Gawler Craton  search
BTAustralasia
 .Australia
 ..South Australia
 ...Gawler Craton
UFGawler Block
SNS South Australia. Added to Thesaurus in 1989.
Gay  search
RTRussian Federation
SNOre fields in the Southern Urals. Indexed with Russian Federation as applicable.
Gaya India  search
BTAsia
 .Indian Peninsula
 ..India
 ...Bihar India
 ....Gaya India
RTBihar mica belt
SNCity in central Bihar, E India.
gaylussite  search
BTcarbonates
 .gaylussite
Gays River Deposit  search
BTCanada
 .Eastern Canada
 ..Maritime Provinces
 ...Nova Scotia
 ....Gays River Deposit
RTlead-zinc deposits
 base metals
 mississippi valley-type deposits
SNMississippi-valley type lead-zinc deposit, central Nova Scotia.
Gazli earthquake 1976  search
BTearthquakes
 .Gazli earthquake 1976
RTUzbekistan
SNEpicenter in Uzbekistan, Central Asia. Added to Thesaurus in 1989.
Gazli earthquake 1984  search
BTearthquakes
 .Gazli earthquake 1984
RTUzbekistan
SNEpicenter in Uzbekistan, Central Asia. Added to Thesaurus in 1989.