Update search
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
- Abstract
- Affiliation
- All
- Authors
- Book Series
- DOI
- EISBN
- EISSN
- Full Text
- GeoRef ID
- ISBN
- ISSN
- Issue
- Keyword (GeoRef Descriptor)
- Meeting Information
- Report #
- Title
- Volume
NARROW
Format
Article Type
Journal
Publisher
Section
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
Central Africa
-
Angola
-
Cabinda Angola (1)
-
-
-
East Africa
-
Uganda (1)
-
-
North Africa
-
Egypt
-
Cairo Egypt (1)
-
Nile Delta (1)
-
-
Tunisia (1)
-
-
Southern Africa
-
South Africa (2)
-
-
West Africa
-
Nigeria
-
Niger Delta (2)
-
-
-
-
American River (1)
-
Antarctica
-
Antarctic Peninsula (1)
-
-
Asia
-
Arabian Peninsula
-
Qatar (1)
-
Saudi Arabia
-
Hejaz Saudi Arabia
-
Jeddah Saudi Arabia (1)
-
-
-
United Arab Emirates
-
Dubai (1)
-
-
-
Central Asia
-
Kazakhstan
-
Semipalatinsk Test Site (1)
-
-
-
Far East
-
Borneo
-
Brunei (1)
-
East Malaysia
-
Sarawak Malaysia (1)
-
-
-
China
-
Anhui China (1)
-
Bohaiwan Basin (1)
-
Chongqing China (1)
-
Hebei China (1)
-
Hong Kong (2)
-
Hubei China (1)
-
Inner Mongolia China (2)
-
Ordos Basin (1)
-
Shanxi China (1)
-
Sichuan Basin (1)
-
Sichuan China
-
Wenchuan China (2)
-
-
Yunnan China
-
Kunming China (1)
-
-
-
Japan
-
Honshu
-
Chiba Peninsula (1)
-
-
-
Korea
-
South Korea (1)
-
-
Malaysia
-
East Malaysia
-
Sarawak Malaysia (1)
-
-
-
Singapore (2)
-
Taiwan
-
Taipei Taiwan (1)
-
-
Thailand
-
Bangkok Thailand (1)
-
-
-
Himalayas
-
Kumaun Himalayas (1)
-
Lesser Himalayas (1)
-
-
Indian Peninsula
-
Bangladesh (1)
-
India
-
Deccan Plateau (1)
-
Delhi India (1)
-
Gujarat India (1)
-
Himachal Pradesh India
-
Mandi India (1)
-
-
Jharkhand India
-
Hazaribagh India (1)
-
-
Karnataka India (1)
-
Kolar schist belt (1)
-
Maharashtra India
-
Latur India (1)
-
-
Uttarakhand India (1)
-
West Bengal India
-
Purulia India (1)
-
-
Yamuna River (1)
-
-
Jammu and Kashmir
-
Kashmir (1)
-
-
Nepal
-
Kathmandu Valley (1)
-
-
Pakistan (2)
-
-
Middle East
-
Cyprus (1)
-
Iran (1)
-
Jordan (1)
-
Turkey
-
Ankara Turkey (1)
-
Canakkale Turkey (1)
-
Istanbul Turkey (3)
-
Izmir Turkey (1)
-
-
-
Tien Shan (1)
-
-
Atlantic Ocean
-
Equatorial Atlantic (1)
-
North Atlantic
-
Barbados Ridge (1)
-
Gulf of Mexico
-
Eugene Island Block 330 Field (1)
-
-
North Sea
-
Forties Field (1)
-
Gullfaks Field (1)
-
-
Northwest Atlantic
-
Demerara Rise (1)
-
-
-
South Atlantic
-
Lower Congo Basin (1)
-
-
-
Australasia
-
Australia
-
South Australia (1)
-
Western Australia
-
Yilgarn Craton (1)
-
-
-
New Zealand
-
Wellington New Zealand (1)
-
-
-
Baram Delta (1)
-
Canada
-
Eastern Canada
-
Maritime Provinces
-
Nova Scotia (1)
-
-
Ontario
-
Bruce County Ontario (1)
-
-
Quebec
-
Montreal and Jesus Islands County Quebec
-
Montreal Quebec (1)
-
-
-
-
Stikinia Terrane (1)
-
Western Canada
-
Alberta
-
Athabasca Oil Sands (1)
-
-
British Columbia
-
Bowser Basin (1)
-
Skeena Mountains (1)
-
Vancouver British Columbia (1)
-
Vancouver Island (1)
-
-
Northwest Territories
-
Mackenzie Delta (1)
-
-
Yukon Territory (1)
-
-
-
Caribbean region
-
West Indies
-
Antilles
-
Greater Antilles
-
Cuba (1)
-
Hispaniola
-
Haiti (1)
-
-
-
Lesser Antilles
-
Guadeloupe (1)
-
-
-
-
-
Cascade Range (2)
-
Central European Basin (1)
-
Central Valley (3)
-
Chalk Aquifer (3)
-
Coast Ranges (3)
-
Colorado River basin (1)
-
Commonwealth of Independent States
-
Kazakhstan
-
Semipalatinsk Test Site (1)
-
-
-
Copper River basin (1)
-
developing countries (1)
-
East Pacific Ocean Islands
-
Hawaii (1)
-
-
Europe
-
Alps
-
French Alps (1)
-
-
Carpathians (1)
-
Central Europe
-
Austria
-
Vorarlberg Austria (1)
-
-
Black Forest (1)
-
Germany
-
Brandenburg Germany
-
Berlin Germany (1)
-
Ketzin Germany (1)
-
-
North Rhine-Westphalia Germany (1)
-
-
-
Fennoscandian Shield (1)
-
Lower Rhine Basin (1)
-
Southern Europe
-
Greece
-
Greek Macedonia
-
Salonika Greece (1)
-
-
Sterea Ellas
-
Attica Greece
-
Athens Greece (1)
-
-
-
-
Iberian Peninsula
-
Iberian Massif (1)
-
Portugal
-
Aveiro Portugal (1)
-
-
Spain
-
Andalusia Spain
-
Granada Spain (1)
-
-
Galicia Spain (1)
-
-
-
Italy
-
Emilia-Romagna Italy (1)
-
Latium Italy
-
Rome Italy (1)
-
-
Piemonte Italy (1)
-
Sicily Italy (1)
-
Veneto Italy
-
Vicenza Italy (1)
-
-
-
Macedonia
-
Greek Macedonia
-
Salonika Greece (1)
-
-
-
Romania (1)
-
-
Western Europe
-
Belgium
-
Wallonia Belgium
-
Liege Belgium (1)
-
-
-
France
-
Auvergne (1)
-
Bas-Rhin France
-
Soultz-sous-Forets France (2)
-
-
French Alps (1)
-
Haute-Marne France (1)
-
Herault France (1)
-
Isere France
-
Grenoble France (1)
-
-
Meuse France (1)
-
Normandy (1)
-
Orne France
-
Mortagne France (1)
-
-
Paris France (1)
-
Puy-de-Dome France
-
Chaine des Puys (1)
-
-
-
Ireland
-
Galway Ireland
-
Connemara (1)
-
-
-
Scandinavia
-
Denmark (1)
-
Finland
-
North Karelia Finland
-
Outokumpu Finland (1)
-
-
-
Norway
-
Oslo Norway (1)
-
-
Sweden (4)
-
-
United Kingdom
-
Great Britain
-
England
-
Cumbria England (1)
-
Dorset England (1)
-
East Anglia
-
Suffolk England (1)
-
-
Leicestershire England (1)
-
Lincolnshire England (1)
-
London Basin (2)
-
London England (2)
-
Northumberland England (1)
-
Wessex Basin (1)
-
Wiltshire England (1)
-
Yorkshire England (1)
-
-
Scotland (2)
-
Wales
-
South Wales (2)
-
-
-
-
-
-
Green Canyon (1)
-
Gulf of Mexico Basin (2)
-
Imperial Valley (1)
-
Indian Ocean
-
Arabian Sea
-
Persian Gulf (1)
-
-
-
Malay Archipelago
-
Borneo
-
Brunei (1)
-
East Malaysia
-
Sarawak Malaysia (1)
-
-
-
-
Mammoth Cave (1)
-
Maverick Basin (1)
-
Mediterranean Sea
-
West Mediterranean (1)
-
-
Mexico
-
Baja California Mexico
-
Mexicali Mexico (1)
-
-
Coahuila Mexico (1)
-
Sabinas Basin (1)
-
-
North America
-
Appalachians
-
Appalachian Plateau (1)
-
-
Basin and Range Province (1)
-
Canadian Shield (2)
-
Great Lakes
-
Lake Ontario (1)
-
-
Great Lakes region (1)
-
Gulf Coastal Plain (2)
-
Michigan Basin (2)
-
Saint Lawrence River (1)
-
Sonoran Desert (1)
-
Western Canada Sedimentary Basin (1)
-
-
North Island (2)
-
Oceania
-
Melanesia
-
Fiji (1)
-
-
Polynesia
-
Hawaii (1)
-
-
-
Ottawa River (1)
-
Pacific Ocean
-
North Pacific
-
Northwest Pacific
-
South China Sea
-
Yinggehai Basin (1)
-
-
-
-
West Pacific
-
Northwest Pacific
-
South China Sea
-
Yinggehai Basin (1)
-
-
-
-
-
Sacramento River (1)
-
San Andreas Fault (2)
-
San Joaquin Basin (1)
-
San Joaquin River (1)
-
Severn Estuary (1)
-
Seymour Island (1)
-
Sierra Nevada (1)
-
South America
-
Andes
-
Patagonian Andes (1)
-
-
Argentina (1)
-
Brazil
-
Parana Brazil (1)
-
Sao Paulo Brazil (1)
-
-
Chile (4)
-
Colombia
-
Cusiana Field (1)
-
Magdalena River (1)
-
-
Parana River (1)
-
Patagonia
-
Patagonian Andes (1)
-
-
Peru
-
Lima Peru (1)
-
-
-
South Island (1)
-
Thames Estuary (1)
-
United States
-
Alabama (1)
-
Alaska
-
Aleutian Islands
-
Amchitka Island (1)
-
-
-
Arizona
-
La Paz County Arizona (1)
-
Mohave County Arizona (1)
-
Pima County Arizona
-
Tucson Arizona (2)
-
-
Yuma County Arizona (1)
-
-
Arkansas
-
Pulaski County Arkansas (1)
-
-
Atlantic Coastal Plain (1)
-
Black Warrior Basin (1)
-
California
-
Alameda County California
-
Berkeley California (1)
-
Oakland California (3)
-
-
Central California (1)
-
Elsinore Fault (1)
-
Hayward Fault (2)
-
Imperial County California
-
Brawley Fault (1)
-
Imperial Fault (1)
-
-
Kern County California
-
Kern River Field (1)
-
-
Los Angeles County California
-
Los Angeles California (1)
-
-
Mono County California
-
Mono Lake (1)
-
-
Northern California (2)
-
Riverside County California (1)
-
Sacramento County California
-
Sacramento California (1)
-
-
Salton Sea (1)
-
San Bernardino County California (1)
-
San Diego County California
-
San Diego California (1)
-
-
San Fernando Valley (1)
-
San Francisco Bay (2)
-
San Francisco Bay region (1)
-
San Francisco County California
-
San Francisco California (2)
-
-
Santa Barbara County California
-
Santa Barbara California (1)
-
-
Santa Clara County California (1)
-
Shasta County California (1)
-
Southern California (3)
-
-
Colorado
-
Adams County Colorado (1)
-
Arapahoe County Colorado (1)
-
Denver County Colorado
-
Denver Colorado (1)
-
-
Douglas County Colorado (1)
-
Jefferson County Colorado (1)
-
Yuma County Colorado (1)
-
-
Denver Basin (1)
-
Florida
-
Collier County Florida (1)
-
Jackson County Florida (1)
-
-
Floridan Aquifer (1)
-
Georgia (1)
-
Hawaii (1)
-
Idaho (2)
-
Indiana
-
Miami County Indiana (1)
-
-
Iowa (1)
-
Kentucky
-
Caldwell County Kentucky (1)
-
Edmonson County Kentucky (1)
-
-
Maryland
-
Baltimore County Maryland (1)
-
Harford County Maryland
-
Aberdeen Proving Ground (1)
-
-
-
Massachusetts
-
Barnstable County Massachusetts
-
Cape Cod (1)
-
-
-
Michigan
-
Michigan Lower Peninsula
-
Otsego County Michigan (2)
-
-
Michigan Upper Peninsula (1)
-
-
Minnesota
-
Hennepin County Minnesota
-
Minneapolis Minnesota (1)
-
-
Ramsey County Minnesota
-
Saint Paul Minnesota (2)
-
-
-
Mississippi (2)
-
Missouri (1)
-
Mojave Desert (1)
-
Nevada
-
Clark County Nevada
-
Las Vegas Nevada (1)
-
-
Las Vegas Valley (1)
-
Nevada Test Site (3)
-
Nye County Nevada (1)
-
Yucca Flat (1)
-
-
New Jersey (1)
-
New Mexico
-
Bernalillo County New Mexico
-
Albuquerque New Mexico (1)
-
-
-
New York
-
Cattaraugus County New York (1)
-
Montgomery County New York (1)
-
-
North Carolina (2)
-
Ohio (1)
-
Oklahoma
-
Carter County Oklahoma (1)
-
Payne County Oklahoma (1)
-
-
Oregon
-
Multnomah County Oregon
-
Portland Oregon (1)
-
-
Polk County Oregon (1)
-
-
Pennsylvania (2)
-
South Carolina (1)
-
South Platte River (1)
-
Southwestern U.S. (1)
-
Tennessee
-
Blount County Tennessee (1)
-
Monroe County Tennessee (1)
-
-
Texas
-
East Texas (2)
-
-
Utah
-
San Juan County Utah (1)
-
Washington County Utah (1)
-
-
Vermont (1)
-
Washington
-
Benton County Washington (1)
-
Cowlitz River (1)
-
Hanford Site (3)
-
Puget Sound (1)
-
Skamania County Washington
-
Mount Saint Helens (2)
-
-
-
West Virginia
-
Monongalia County West Virginia (1)
-
-
Western U.S. (1)
-
Wisconsin
-
Door County Wisconsin (1)
-
-
-
USSR (2)
-
Wellington Fault (1)
-
-
commodities
-
abrasives (1)
-
aggregate (16)
-
bitumens (2)
-
brines (4)
-
ceramic materials (1)
-
chalk deposits (1)
-
construction materials
-
building stone (13)
-
cement materials (3)
-
crushed stone (3)
-
dimension stone (4)
-
-
energy sources (1)
-
gems (2)
-
geothermal energy (4)
-
glass materials (3)
-
heavy mineral deposits (1)
-
industrial minerals (1)
-
limestone deposits (3)
-
marble deposits (2)
-
metal ores
-
copper ores (2)
-
gold ores (3)
-
iron ores (2)
-
lead ores (1)
-
silver ores (2)
-
tin ores (1)
-
titanium ores (1)
-
-
mineral deposits, genesis (1)
-
mineral exploration (5)
-
mineral resources (1)
-
oil and gas fields (13)
-
ornamental materials (3)
-
petroleum
-
natural gas
-
coalbed methane (2)
-
-
-
sodium sulfate (1)
-
tight sands (2)
-
water resources (3)
-
-
elements, isotopes
-
carbon
-
C-13/C-12 (4)
-
C-14 (1)
-
organic carbon (1)
-
-
halogens
-
chlorine
-
chloride ion (2)
-
-
fluorine
-
fluoride ion (2)
-
-
-
hydrogen
-
D/H (1)
-
-
isotope ratios (6)
-
isotopes
-
radioactive isotopes
-
C-14 (1)
-
-
stable isotopes
-
C-13/C-12 (4)
-
D/H (1)
-
O-18/O-16 (5)
-
-
-
metals
-
actinides
-
uranium (1)
-
-
alkali metals
-
potassium (1)
-
sodium (2)
-
-
alkaline earth metals
-
calcium (2)
-
magnesium (1)
-
-
aluminum (3)
-
arsenic (2)
-
gold (1)
-
iron
-
ferrous iron (1)
-
-
lead (1)
-
manganese (1)
-
mercury (1)
-
molybdenum (1)
-
silver (1)
-
titanium (1)
-
zirconium (1)
-
-
nitrogen (1)
-
oxygen
-
dissolved oxygen (1)
-
O-18/O-16 (5)
-
-
selenium (1)
-
silicon (1)
-
sulfur (2)
-
trace metals (1)
-
-
fossils
-
bacteria
-
coliform bacteria (1)
-
-
borings (1)
-
Invertebrata
-
Mollusca
-
Cephalopoda
-
Ammonoidea (1)
-
-
-
Protista
-
Foraminifera (2)
-
-
-
microfossils (1)
-
Plantae
-
algae
-
diatoms (1)
-
-
-
-
geochronology methods
-
paleomagnetism (4)
-
-
geologic age
-
Anthropocene (1)
-
Cenozoic
-
Quaternary
-
Holocene
-
upper Holocene (1)
-
-
Kazusa Group (1)
-
Pleistocene
-
lower Pleistocene (1)
-
-
upper Quaternary (1)
-
-
Tertiary
-
Neogene
-
Miocene
-
Columbia River Basalt Group (1)
-
Ellensburg Formation (1)
-
Grande Ronde Basalt (1)
-
Saddle Mountains Basalt (1)
-
upper Miocene
-
Santa Margarita Formation (1)
-
-
Wanapum Basalt (1)
-
-
Pliocene
-
lower Pliocene (1)
-
-
Ringold Formation (1)
-
upper Neogene (1)
-
-
Paleogene
-
Eocene
-
lower Eocene
-
Ypresian
-
London Clay (1)
-
-
-
middle Eocene
-
Lutetian (1)
-
-
upper Eocene
-
Priabonian (1)
-
-
-
Oligocene
-
Fontainebleau Sandstone (1)
-
Frio Formation (1)
-
lower Oligocene
-
Rupelian (1)
-
-
-
Wasatch Formation (1)
-
-
-
upper Cenozoic (1)
-
-
Coal Measures (1)
-
Dalradian (1)
-
Mesozoic
-
Cretaceous
-
Dakota Formation (1)
-
Lower Cretaceous
-
Albian
-
Pinda Formation (1)
-
-
Clearwater Formation (1)
-
McMurray Formation (1)
-
-
Middle Cretaceous (1)
-
Upper Cretaceous
-
Belly River Formation (1)
-
Cenomanian (1)
-
Mesaverde Group (1)
-
Senonian (1)
-
Tropic Shale (1)
-
Turonian (1)
-
-
-
Jurassic
-
Lower Jurassic
-
Toarcian (1)
-
-
Middle Jurassic
-
Callovian (2)
-
-
Solnhofen Limestone (1)
-
Upper Jurassic
-
Cotton Valley Group (1)
-
Fulmar Formation (1)
-
Kimmeridge Clay (2)
-
Oxfordian (2)
-
-
-
Triassic
-
Upper Triassic
-
Chinle Formation (1)
-
Mercia Mudstone (1)
-
Stuhini Group (1)
-
Yanchang Formation (1)
-
-
-
Yanshanian (1)
-
-
Paleozoic
-
Berea Sandstone (1)
-
Carboniferous
-
Mississippian
-
Lower Mississippian (1)
-
-
-
Devonian
-
Middle Devonian
-
Marcellus Shale (1)
-
-
Upper Devonian (1)
-
-
Ordovician
-
Middle Ordovician
-
Saint Peter Sandstone (2)
-
-
Upper Ordovician
-
Trentonian (1)
-
-
-
Permian
-
Lower Permian (1)
-
Unayzah Formation (1)
-
-
Silurian
-
Bass Islands Dolomite (2)
-
Lower Silurian (1)
-
-
Taiyuan Formation (1)
-
upper Paleozoic
-
Arkansas Novaculite (1)
-
Bakken Formation (1)
-
Shanxi Formation (1)
-
-
Woodford Shale (1)
-
-
Precambrian
-
Archean (1)
-
upper Precambrian
-
Proterozoic
-
Neoproterozoic (1)
-
Paleoproterozoic (1)
-
-
-
-
-
igneous rocks
-
igneous rocks
-
plutonic rocks
-
diabase (2)
-
granites (4)
-
ultramafics
-
peridotites
-
lherzolite (1)
-
-
-
-
volcanic rocks
-
andesites (1)
-
basalts (3)
-
pyroclastics
-
ignimbrite (2)
-
tuff (1)
-
-
-
-
volcanic ash (1)
-
-
metamorphic rocks
-
metamorphic rocks
-
gneisses
-
granite gneiss (1)
-
-
marbles (2)
-
metasomatic rocks
-
greisen (1)
-
-
-
-
minerals
-
alabaster (1)
-
carbonates
-
aragonite (1)
-
calcite (4)
-
dolomite (4)
-
siderite (2)
-
thaumasite (1)
-
vaterite (1)
-
-
halides
-
chlorides (1)
-
fluorides
-
topaz (1)
-
-
-
manganese minerals (1)
-
minerals (1)
-
native elements
-
diamond (3)
-
graphite (1)
-
-
oxides
-
goethite (1)
-
titanium oxides (1)
-
-
silicates
-
asbestos (2)
-
chain silicates
-
pyroxene group
-
clinopyroxene
-
chrome diopside (1)
-
diopside (1)
-
-
-
-
framework silicates
-
silica minerals
-
quartz (3)
-
-
-
orthosilicates
-
nesosilicates
-
thaumasite (1)
-
topaz (1)
-
-
-
ring silicates
-
tourmaline group
-
buergerite (1)
-
elbaite (1)
-
foitite (1)
-
schorl (1)
-
uvite (1)
-
-
-
sheet silicates
-
chlorite group
-
chlorite (1)
-
-
clay minerals
-
beidellite (1)
-
dickite (1)
-
kaolinite (4)
-
smectite (3)
-
-
illite (1)
-
mica group
-
muscovite (1)
-
-
-
-
sulfates
-
anglesite (1)
-
gypsum (4)
-
thaumasite (1)
-
-
sulfides (2)
-
sulfosalts
-
sulfantimonites
-
bournonite (1)
-
semseyite (1)
-
-
sulfarsenites
-
jordanite (1)
-
-
-
-
Primary terms
-
Africa
-
Central Africa
-
Angola
-
Cabinda Angola (1)
-
-
-
East Africa
-
Uganda (1)
-
-
North Africa
-
Egypt
-
Cairo Egypt (1)
-
Nile Delta (1)
-
-
Tunisia (1)
-
-
Southern Africa
-
South Africa (2)
-
-
West Africa
-
Nigeria
-
Niger Delta (2)
-
-
-
-
Antarctica
-
Antarctic Peninsula (1)
-
-
Asia
-
Arabian Peninsula
-
Qatar (1)
-
Saudi Arabia
-
Hejaz Saudi Arabia
-
Jeddah Saudi Arabia (1)
-
-
-
United Arab Emirates
-
Dubai (1)
-
-
-
Central Asia
-
Kazakhstan
-
Semipalatinsk Test Site (1)
-
-
-
Far East
-
Borneo
-
Brunei (1)
-
East Malaysia
-
Sarawak Malaysia (1)
-
-
-
China
-
Anhui China (1)
-
Bohaiwan Basin (1)
-
Chongqing China (1)
-
Hebei China (1)
-
Hong Kong (2)
-
Hubei China (1)
-
Inner Mongolia China (2)
-
Ordos Basin (1)
-
Shanxi China (1)
-
Sichuan Basin (1)
-
Sichuan China
-
Wenchuan China (2)
-
-
Yunnan China
-
Kunming China (1)
-
-
-
Japan
-
Honshu
-
Chiba Peninsula (1)
-
-
-
Korea
-
South Korea (1)
-
-
Malaysia
-
East Malaysia
-
Sarawak Malaysia (1)
-
-
-
Singapore (2)
-
Taiwan
-
Taipei Taiwan (1)
-
-
Thailand
-
Bangkok Thailand (1)
-
-
-
Himalayas
-
Kumaun Himalayas (1)
-
Lesser Himalayas (1)
-
-
Indian Peninsula
-
Bangladesh (1)
-
India
-
Deccan Plateau (1)
-
Delhi India (1)
-
Gujarat India (1)
-
Himachal Pradesh India
-
Mandi India (1)
-
-
Jharkhand India
-
Hazaribagh India (1)
-
-
Karnataka India (1)
-
Kolar schist belt (1)
-
Maharashtra India
-
Latur India (1)
-
-
Uttarakhand India (1)
-
West Bengal India
-
Purulia India (1)
-
-
Yamuna River (1)
-
-
Jammu and Kashmir
-
Kashmir (1)
-
-
Nepal
-
Kathmandu Valley (1)
-
-
Pakistan (2)
-
-
Middle East
-
Cyprus (1)
-
Iran (1)
-
Jordan (1)
-
Turkey
-
Ankara Turkey (1)
-
Canakkale Turkey (1)
-
Istanbul Turkey (3)
-
Izmir Turkey (1)
-
-
-
Tien Shan (1)
-
-
Atlantic Ocean
-
Equatorial Atlantic (1)
-
North Atlantic
-
Barbados Ridge (1)
-
Gulf of Mexico
-
Eugene Island Block 330 Field (1)
-
-
North Sea
-
Forties Field (1)
-
Gullfaks Field (1)
-
-
Northwest Atlantic
-
Demerara Rise (1)
-
-
-
South Atlantic
-
Lower Congo Basin (1)
-
-
-
Australasia
-
Australia
-
South Australia (1)
-
Western Australia
-
Yilgarn Craton (1)
-
-
-
New Zealand
-
Wellington New Zealand (1)
-
-
-
bacteria
-
coliform bacteria (1)
-
-
biography (1)
-
bitumens (2)
-
brines (4)
-
Canada
-
Eastern Canada
-
Maritime Provinces
-
Nova Scotia (1)
-
-
Ontario
-
Bruce County Ontario (1)
-
-
Quebec
-
Montreal and Jesus Islands County Quebec
-
Montreal Quebec (1)
-
-
-
-
Stikinia Terrane (1)
-
Western Canada
-
Alberta
-
Athabasca Oil Sands (1)
-
-
British Columbia
-
Bowser Basin (1)
-
Skeena Mountains (1)
-
Vancouver British Columbia (1)
-
Vancouver Island (1)
-
-
Northwest Territories
-
Mackenzie Delta (1)
-
-
Yukon Territory (1)
-
-
-
carbon
-
C-13/C-12 (4)
-
C-14 (1)
-
organic carbon (1)
-
-
Caribbean region
-
West Indies
-
Antilles
-
Greater Antilles
-
Cuba (1)
-
Hispaniola
-
Haiti (1)
-
-
-
Lesser Antilles
-
Guadeloupe (1)
-
-
-
-
-
catalogs (1)
-
Cenozoic
-
Quaternary
-
Holocene
-
upper Holocene (1)
-
-
Kazusa Group (1)
-
Pleistocene
-
lower Pleistocene (1)
-
-
upper Quaternary (1)
-
-
Tertiary
-
Neogene
-
Miocene
-
Columbia River Basalt Group (1)
-
Ellensburg Formation (1)
-
Grande Ronde Basalt (1)
-
Saddle Mountains Basalt (1)
-
upper Miocene
-
Santa Margarita Formation (1)
-
-
Wanapum Basalt (1)
-
-
Pliocene
-
lower Pliocene (1)
-
-
Ringold Formation (1)
-
upper Neogene (1)
-
-
Paleogene
-
Eocene
-
lower Eocene
-
Ypresian
-
London Clay (1)
-
-
-
middle Eocene
-
Lutetian (1)
-
-
upper Eocene
-
Priabonian (1)
-
-
-
Oligocene
-
Fontainebleau Sandstone (1)
-
Frio Formation (1)
-
lower Oligocene
-
Rupelian (1)
-
-
-
Wasatch Formation (1)
-
-
-
upper Cenozoic (1)
-
-
ceramic materials (1)
-
chemical analysis (1)
-
clay mineralogy (4)
-
climate change (3)
-
conservation (6)
-
construction materials
-
building stone (13)
-
cement materials (3)
-
crushed stone (3)
-
dimension stone (4)
-
-
crust (1)
-
crystal growth (2)
-
crystal structure (2)
-
crystallography (1)
-
dams (11)
-
data processing (57)
-
deformation (31)
-
diagenesis (8)
-
Earth (1)
-
earthquakes (183)
-
East Pacific Ocean Islands
-
Hawaii (1)
-
-
ecology (3)
-
economic geology (2)
-
education (4)
-
energy sources (1)
-
engineering geology (65)
-
Europe
-
Alps
-
French Alps (1)
-
-
Carpathians (1)
-
Central Europe
-
Austria
-
Vorarlberg Austria (1)
-
-
Black Forest (1)
-
Germany
-
Brandenburg Germany
-
Berlin Germany (1)
-
Ketzin Germany (1)
-
-
North Rhine-Westphalia Germany (1)
-
-
-
Fennoscandian Shield (1)
-
Lower Rhine Basin (1)
-
Southern Europe
-
Greece
-
Greek Macedonia
-
Salonika Greece (1)
-
-
Sterea Ellas
-
Attica Greece
-
Athens Greece (1)
-
-
-
-
Iberian Peninsula
-
Iberian Massif (1)
-
Portugal
-
Aveiro Portugal (1)
-
-
Spain
-
Andalusia Spain
-
Granada Spain (1)
-
-
Galicia Spain (1)
-
-
-
Italy
-
Emilia-Romagna Italy (1)
-
Latium Italy
-
Rome Italy (1)
-
-
Piemonte Italy (1)
-
Sicily Italy (1)
-
Veneto Italy
-
Vicenza Italy (1)
-
-
-
Macedonia
-
Greek Macedonia
-
Salonika Greece (1)
-
-
-
Romania (1)
-
-
Western Europe
-
Belgium
-
Wallonia Belgium
-
Liege Belgium (1)
-
-
-
France
-
Auvergne (1)
-
Bas-Rhin France
-
Soultz-sous-Forets France (2)
-
-
French Alps (1)
-
Haute-Marne France (1)
-
Herault France (1)
-
Isere France
-
Grenoble France (1)
-
-
Meuse France (1)
-
Normandy (1)
-
Orne France
-
Mortagne France (1)
-
-
Paris France (1)
-
Puy-de-Dome France
-
Chaine des Puys (1)
-
-
-
Ireland
-
Galway Ireland
-
Connemara (1)
-
-
-
Scandinavia
-
Denmark (1)
-
Finland
-
North Karelia Finland
-
Outokumpu Finland (1)
-
-
-
Norway
-
Oslo Norway (1)
-
-
Sweden (4)
-
-
United Kingdom
-
Great Britain
-
England
-
Cumbria England (1)
-
Dorset England (1)
-
East Anglia
-
Suffolk England (1)
-
-
Leicestershire England (1)
-
Lincolnshire England (1)
-
London Basin (2)
-
London England (2)
-
Northumberland England (1)
-
Wessex Basin (1)
-
Wiltshire England (1)
-
Yorkshire England (1)
-
-
Scotland (2)
-
Wales
-
South Wales (2)
-
-
-
-
-
-
explosions (17)
-
faults (24)
-
folds (4)
-
foliation (2)
-
foundations (29)
-
fractures (26)
-
gems (2)
-
geochemistry (19)
-
geodesy (2)
-
geology (2)
-
geomorphology (4)
-
geophysical methods (76)
-
geophysics (1)
-
geosynclines (1)
-
geothermal energy (4)
-
government agencies (6)
-
ground water (57)
-
heat flow (6)
-
heavy mineral deposits (1)
-
hydrogen
-
D/H (1)
-
-
hydrogeology (6)
-
hydrology (13)
-
igneous rocks
-
plutonic rocks
-
diabase (2)
-
granites (4)
-
ultramafics
-
peridotites
-
lherzolite (1)
-
-
-
-
volcanic rocks
-
andesites (1)
-
basalts (3)
-
pyroclastics
-
ignimbrite (2)
-
tuff (1)
-
-
-
-
inclusions
-
fluid inclusions (3)
-
-
Indian Ocean
-
Arabian Sea
-
Persian Gulf (1)
-
-
-
industrial minerals (1)
-
intrusions (2)
-
Invertebrata
-
Mollusca
-
Cephalopoda
-
Ammonoidea (1)
-
-
-
Protista
-
Foraminifera (2)
-
-
-
isotopes
-
radioactive isotopes
-
C-14 (1)
-
-
stable isotopes
-
C-13/C-12 (4)
-
D/H (1)
-
O-18/O-16 (5)
-
-
-
land subsidence (3)
-
land use (3)
-
lava (1)
-
limestone deposits (3)
-
magmas (1)
-
Malay Archipelago
-
Borneo
-
Brunei (1)
-
East Malaysia
-
Sarawak Malaysia (1)
-
-
-
-
mantle (1)
-
maps (1)
-
marble deposits (2)
-
marine installations (4)
-
Mediterranean Sea
-
West Mediterranean (1)
-
-
Mesozoic
-
Cretaceous
-
Dakota Formation (1)
-
Lower Cretaceous
-
Albian
-
Pinda Formation (1)
-
-
Clearwater Formation (1)
-
McMurray Formation (1)
-
-
Middle Cretaceous (1)
-
Upper Cretaceous
-
Belly River Formation (1)
-
Cenomanian (1)
-
Mesaverde Group (1)
-
Senonian (1)
-
Tropic Shale (1)
-
Turonian (1)
-
-
-
Jurassic
-
Lower Jurassic
-
Toarcian (1)
-
-
Middle Jurassic
-
Callovian (2)
-
-
Solnhofen Limestone (1)
-
Upper Jurassic
-
Cotton Valley Group (1)
-
Fulmar Formation (1)
-
Kimmeridge Clay (2)
-
Oxfordian (2)
-
-
-
Triassic
-
Upper Triassic
-
Chinle Formation (1)
-
Mercia Mudstone (1)
-
Stuhini Group (1)
-
Yanchang Formation (1)
-
-
-
Yanshanian (1)
-
-
metal ores
-
copper ores (2)
-
gold ores (3)
-
iron ores (2)
-
lead ores (1)
-
silver ores (2)
-
tin ores (1)
-
titanium ores (1)
-
-
metals
-
actinides
-
uranium (1)
-
-
alkali metals
-
potassium (1)
-
sodium (2)
-
-
alkaline earth metals
-
calcium (2)
-
magnesium (1)
-
-
aluminum (3)
-
arsenic (2)
-
gold (1)
-
iron
-
ferrous iron (1)
-
-
lead (1)
-
manganese (1)
-
mercury (1)
-
molybdenum (1)
-
silver (1)
-
titanium (1)
-
zirconium (1)
-
-
metamorphic rocks
-
gneisses
-
granite gneiss (1)
-
-
marbles (2)
-
metasomatic rocks
-
greisen (1)
-
-
-
Mexico
-
Baja California Mexico
-
Mexicali Mexico (1)
-
-
Coahuila Mexico (1)
-
Sabinas Basin (1)
-
-
mineral deposits, genesis (1)
-
mineral exploration (5)
-
mineral resources (1)
-
mineralogy (1)
-
minerals (1)
-
mining geology (2)
-
mud volcanoes (1)
-
nitrogen (1)
-
North America
-
Appalachians
-
Appalachian Plateau (1)
-
-
Basin and Range Province (1)
-
Canadian Shield (2)
-
Great Lakes
-
Lake Ontario (1)
-
-
Great Lakes region (1)
-
Gulf Coastal Plain (2)
-
Michigan Basin (2)
-
Saint Lawrence River (1)
-
Sonoran Desert (1)
-
Western Canada Sedimentary Basin (1)
-
-
nuclear facilities (2)
-
Ocean Drilling Program
-
Leg 110
-
ODP Site 671 (1)
-
-
Leg 156
-
ODP Site 948 (1)
-
-
Leg 171B
-
ODP Site 1050 (1)
-
-
Leg 207
-
ODP Site 1258 (1)
-
-
-
ocean floors (2)
-
Oceania
-
Melanesia
-
Fiji (1)
-
-
Polynesia
-
Hawaii (1)
-
-
-
oil and gas fields (13)
-
oxygen
-
dissolved oxygen (1)
-
O-18/O-16 (5)
-
-
Pacific Ocean
-
North Pacific
-
Northwest Pacific
-
South China Sea
-
Yinggehai Basin (1)
-
-
-
-
West Pacific
-
Northwest Pacific
-
South China Sea
-
Yinggehai Basin (1)
-
-
-
-
-
paleoclimatology (2)
-
paleoecology (2)
-
paleogeography (1)
-
paleomagnetism (4)
-
Paleozoic
-
Berea Sandstone (1)
-
Carboniferous
-
Mississippian
-
Lower Mississippian (1)
-
-
-
Devonian
-
Middle Devonian
-
Marcellus Shale (1)
-
-
Upper Devonian (1)
-
-
Ordovician
-
Middle Ordovician
-
Saint Peter Sandstone (2)
-
-
Upper Ordovician
-
Trentonian (1)
-
-
-
Permian
-
Lower Permian (1)
-
Unayzah Formation (1)
-
-
Silurian
-
Bass Islands Dolomite (2)
-
Lower Silurian (1)
-
-
Taiyuan Formation (1)
-
upper Paleozoic
-
Arkansas Novaculite (1)
-
Bakken Formation (1)
-
Shanxi Formation (1)
-
-
Woodford Shale (1)
-
-
permafrost (3)
-
petroleum
-
natural gas
-
coalbed methane (2)
-
-
-
petrology (2)
-
Plantae
-
algae
-
diatoms (1)
-
-
-
plate tectonics (5)
-
pollution (31)
-
Precambrian
-
Archean (1)
-
upper Precambrian
-
Proterozoic
-
Neoproterozoic (1)
-
Paleoproterozoic (1)
-
-
-
-
reclamation (1)
-
remote sensing (7)
-
reservoirs (6)
-
roads (19)
-
rock mechanics (69)
-
sea water (1)
-
sea-level changes (3)
-
sedimentary rocks
-
carbonate rocks
-
chalk (6)
-
dolostone (3)
-
limestone (8)
-
-
chemically precipitated rocks
-
chert (1)
-
evaporites
-
salt (3)
-
-
phosphate rocks (1)
-
-
clastic rocks
-
alum shale (1)
-
arenite
-
quartz arenite (1)
-
-
arkose (1)
-
bentonite (7)
-
black shale (1)
-
claystone (4)
-
conglomerate (1)
-
diatomite (1)
-
graywacke (1)
-
marl (1)
-
mudstone (7)
-
sandstone (23)
-
shale (18)
-
siltstone (3)
-
tonstein (1)
-
-
coal
-
bituminous coal (2)
-
lignite (1)
-
-
oil sands (1)
-
-
sedimentary structures
-
biogenic structures
-
stromatolites (1)
-
-
planar bedding structures
-
laminations (1)
-
-
-
sedimentation (6)
-
sediments
-
clastic sediments
-
alluvium (6)
-
boulder clay (1)
-
boulders (2)
-
clay (20)
-
colluvium (1)
-
drift (1)
-
dust (2)
-
gravel (3)
-
kaolin (2)
-
mud (2)
-
outwash (1)
-
quartz sand (1)
-
sand (18)
-
silt (6)
-
till (4)
-
-
marine sediments (4)
-
peat (5)
-
-
seismology (3)
-
selenium (1)
-
shorelines (4)
-
silicon (1)
-
slope stability (17)
-
sodium sulfate (1)
-
soil mechanics (59)
-
soils
-
Alfisols (1)
-
Alluvial soils (1)
-
Calcareous soils (2)
-
Clay soils (1)
-
Desert soils (2)
-
Entisols (1)
-
laterites (2)
-
loam (2)
-
-
South America
-
Andes
-
Patagonian Andes (1)
-
-
Argentina (1)
-
Brazil
-
Parana Brazil (1)
-
Sao Paulo Brazil (1)
-
-
Chile (4)
-
Colombia
-
Cusiana Field (1)
-
Magdalena River (1)
-
-
Parana River (1)
-
Patagonia
-
Patagonian Andes (1)
-
-
Peru
-
Lima Peru (1)
-
-
-
spectroscopy (1)
-
springs (1)
-
standard materials (1)
-
stratigraphy (4)
-
structural analysis (5)
-
structural geology (2)
-
sulfur (2)
-
tectonics
-
neotectonics (2)
-
-
thermal analysis (1)
-
tunnels (10)
-
underground installations (13)
-
United States
-
Alabama (1)
-
Alaska
-
Aleutian Islands
-
Amchitka Island (1)
-
-
-
Arizona
-
La Paz County Arizona (1)
-
Mohave County Arizona (1)
-
Pima County Arizona
-
Tucson Arizona (2)
-
-
Yuma County Arizona (1)
-
-
Arkansas
-
Pulaski County Arkansas (1)
-
-
Atlantic Coastal Plain (1)
-
Black Warrior Basin (1)
-
California
-
Alameda County California
-
Berkeley California (1)
-
Oakland California (3)
-
-
Central California (1)
-
Elsinore Fault (1)
-
Hayward Fault (2)
-
Imperial County California
-
Brawley Fault (1)
-
Imperial Fault (1)
-
-
Kern County California
-
Kern River Field (1)
-
-
Los Angeles County California
-
Los Angeles California (1)
-
-
Mono County California
-
Mono Lake (1)
-
-
Northern California (2)
-
Riverside County California (1)
-
Sacramento County California
-
Sacramento California (1)
-
-
Salton Sea (1)
-
San Bernardino County California (1)
-
San Diego County California
-
San Diego California (1)
-
-
San Fernando Valley (1)
-
San Francisco Bay (2)
-
San Francisco Bay region (1)
-
San Francisco County California
-
San Francisco California (2)
-
-
Santa Barbara County California
-
Santa Barbara California (1)
-
-
Santa Clara County California (1)
-
Shasta County California (1)
-
Southern California (3)
-
-
Colorado
-
Adams County Colorado (1)
-
Arapahoe County Colorado (1)
-
Denver County Colorado
-
Denver Colorado (1)
-
-
Douglas County Colorado (1)
-
Jefferson County Colorado (1)
-
Yuma County Colorado (1)
-
-
Denver Basin (1)
-
Florida
-
Collier County Florida (1)
-
Jackson County Florida (1)
-
-
Floridan Aquifer (1)
-
Georgia (1)
-
Hawaii (1)
-
Idaho (2)
-
Indiana
-
Miami County Indiana (1)
-
-
Iowa (1)
-
Kentucky
-
Caldwell County Kentucky (1)
-
Edmonson County Kentucky (1)
-
-
Maryland
-
Baltimore County Maryland (1)
-
Harford County Maryland
-
Aberdeen Proving Ground (1)
-
-
-
Massachusetts
-
Barnstable County Massachusetts
-
Cape Cod (1)
-
-
-
Michigan
-
Michigan Lower Peninsula
-
Otsego County Michigan (2)
-
-
Michigan Upper Peninsula (1)
-
-
Minnesota
-
Hennepin County Minnesota
-
Minneapolis Minnesota (1)
-
-
Ramsey County Minnesota
-
Saint Paul Minnesota (2)
-
-
-
Mississippi (2)
-
Missouri (1)
-
Mojave Desert (1)
-
Nevada
-
Clark County Nevada
-
Las Vegas Nevada (1)
-
-
Las Vegas Valley (1)
-
Nevada Test Site (3)
-
Nye County Nevada (1)
-
Yucca Flat (1)
-
-
New Jersey (1)
-
New Mexico
-
Bernalillo County New Mexico
-
Albuquerque New Mexico (1)
-
-
-
New York
-
Cattaraugus County New York (1)
-
Montgomery County New York (1)
-
-
North Carolina (2)
-
Ohio (1)
-
Oklahoma
-
Carter County Oklahoma (1)
-
Payne County Oklahoma (1)
-
-
Oregon
-
Multnomah County Oregon
-
Portland Oregon (1)
-
-
Polk County Oregon (1)
-
-
Pennsylvania (2)
-
South Carolina (1)
-
South Platte River (1)
-
Southwestern U.S. (1)
-
Tennessee
-
Blount County Tennessee (1)
-
Monroe County Tennessee (1)
-
-
Texas
-
East Texas (2)
-
-
Utah
-
San Juan County Utah (1)
-
Washington County Utah (1)
-
-
Vermont (1)
-
Washington
-
Benton County Washington (1)
-
Cowlitz River (1)
-
Hanford Site (3)
-
Puget Sound (1)
-
Skamania County Washington
-
Mount Saint Helens (2)
-
-
-
West Virginia
-
Monongalia County West Virginia (1)
-
-
Western U.S. (1)
-
Wisconsin
-
Door County Wisconsin (1)
-
-
-
USSR (2)
-
volcanology (1)
-
waste disposal (22)
-
water resources (3)
-
waterways (2)
-
weathering (19)
-
well-logging (13)
-
X-ray analysis (1)
-
-
rock formations
-
Hazelton Group (1)
-
Karoo Supergroup (1)
-
Lincolnshire Limestone (1)
-
Monterey Formation (1)
-
Nubian Sandstone (1)
-
Paskapoo Formation (1)
-
Tor Formation (1)
-
-
sedimentary rocks
-
calcrete (1)
-
pozzolan (1)
-
sedimentary rocks
-
carbonate rocks
-
chalk (6)
-
dolostone (3)
-
limestone (8)
-
-
chemically precipitated rocks
-
chert (1)
-
evaporites
-
salt (3)
-
-
phosphate rocks (1)
-
-
clastic rocks
-
alum shale (1)
-
arenite
-
quartz arenite (1)
-
-
arkose (1)
-
bentonite (7)
-
black shale (1)
-
claystone (4)
-
conglomerate (1)
-
diatomite (1)
-
graywacke (1)
-
marl (1)
-
mudstone (7)
-
sandstone (23)
-
shale (18)
-
siltstone (3)
-
tonstein (1)
-
-
coal
-
bituminous coal (2)
-
lignite (1)
-
-
oil sands (1)
-
-
siliciclastics (2)
-
volcaniclastics (1)
-
-
sedimentary structures
-
borings (1)
-
channels (2)
-
sedimentary structures
-
biogenic structures
-
stromatolites (1)
-
-
planar bedding structures
-
laminations (1)
-
-
-
-
sediments
-
sediments
-
clastic sediments
-
alluvium (6)
-
boulder clay (1)
-
boulders (2)
-
clay (20)
-
colluvium (1)
-
drift (1)
-
dust (2)
-
gravel (3)
-
kaolin (2)
-
mud (2)
-
outwash (1)
-
quartz sand (1)
-
sand (18)
-
silt (6)
-
till (4)
-
-
marine sediments (4)
-
peat (5)
-
-
siliciclastics (2)
-
volcaniclastics (1)
-
-
soils
-
residual soils (1)
-
soils
-
Alfisols (1)
-
Alluvial soils (1)
-
Calcareous soils (2)
-
Clay soils (1)
-
Desert soils (2)
-
Entisols (1)
-
laterites (2)
-
loam (2)
-
-
GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
testing
Distortions of Metallic Objects in EM34 Apparent Conductivity Readings Available to Purchase
Effects of Thermal and Stress Cycles on the Mechanical Properties and Acoustic Emission Characteristics of Rocks Open Access
A Passive‐Source Ocean‐Bottom Seismic Experiment in the South China Sea: Evaluations of Data Quality and Instrument Performance Available to Purchase
Estimation of CO 2 saturation maps from synthetic seismic data using a deep-learning method with a multi-scale approach Available to Purchase
Analysis of Typical Rock Physical Characteristics, Mechanical Properties, and Failure Modes of the Laoheba Phosphate Mining Area in the Sichuan Basin, China Open Access
Seismic Characterization of Subsurface Structures at Rock Valley, Nevada Available to Purchase
Hydrogeochemistry and Quality Assessment using Water Quality Indices of Surface and Groundwater of Konar Reservoir Region, Hazaribag District, Jharkhand, India Available to Purchase
Discussion of “ASCE/SEI 41 assessment of reinforced concrete buildings: Benchmarking nonlinear dynamic procedures with empirical damage observations” Available to Purchase
Experimental investigation of physical and tensile mechanical properties of granite after different heating and cooling treatments Available to Purchase
Experimental study of the effects of fracture number on the creep and acoustic emission characteristics of sandstone Available to Purchase
Earthquake response of reinforced concrete frames with infill and active external confinement: Tests and dataset Open Access
An operator view on trends in core acquisition Available to Purchase
Abstract Core samples from the subsurface can provide unambiguous direct information to guide operator decisions. Core may be acquired with drilling equipment (full-bore core) or by post-drill wireline methods (sidewall core). Both approaches have distinct profiles of cost, risk, sample type and value, and an operator must select the most appropriate to progress business in an informed way. The option to selectively core after drilling and perceptions of lower cost and risk might indicate that sidewall coring will always be the best approach. Recent developments to increase the size and quality of rotary sidewall samples would only add weight to this view. It is not all good news for sidewall core, however. Individual sample size and total volume delivered per run are tiny; weak rock or high overbalance pressure may cause poor recovery and biased datasets; time between drilling and logging allows mud invasion and borehole relaxation, so samples are often broken and pore fluids contaminated. Sidewall sample sets therefore leave a higher degree of uncertainty when compared to full-bore core. It is this operator's view that both approaches have a role to play in reducing subsurface uncertainty, and cost, risk and value should be carefully considered when deciding which to apply.