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NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
East Africa
-
Tanzania
-
Olduvai Gorge (1)
-
-
-
North Africa
-
Algeria (1)
-
Illizi Basin (1)
-
Tunisia (1)
-
-
Sahel (1)
-
Southern Africa
-
Karoo Basin (3)
-
South Africa
-
Cape fold belt (2)
-
KwaZulu-Natal South Africa (2)
-
-
-
-
Arctic Ocean
-
Beaufort Sea (1)
-
Chukchi Sea (1)
-
-
Arctic region (1)
-
Asia
-
Arabian Peninsula
-
Oman (1)
-
Saudi Arabia (1)
-
-
Far East
-
Borneo
-
East Malaysia
-
Sarawak Malaysia (1)
-
-
-
China
-
Inner Mongolia China
-
Erlian Basin (1)
-
-
Ordos Basin (1)
-
Qaidam Basin (1)
-
-
Malaysia
-
East Malaysia
-
Sarawak Malaysia (1)
-
-
-
-
Indian Peninsula
-
Indus Basin (1)
-
Pakistan
-
Sind Pakistan (1)
-
-
-
Irkutsk Basin (1)
-
Irkutsk Russian Federation (1)
-
Khabarovsk Russian Federation (1)
-
Krasnoyarsk Russian Federation (1)
-
Middle East
-
Iran (1)
-
Turkey
-
Eskisehir Turkey (1)
-
-
Zagros (1)
-
-
Novosibirsk Russian Federation (1)
-
Russian Far East (1)
-
Siberia (1)
-
Siberian Platform
-
Yenisei Ridge (1)
-
-
Tomsk Russian Federation (2)
-
Tyumen Russian Federation
-
Khanty-Mansi Russian Federation
-
Salym Field (1)
-
Surgut Russian Federation (1)
-
-
-
West Siberia (2)
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Yakutia Russian Federation (1)
-
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Atlantic Ocean
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North Atlantic
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Gulf of Mexico (3)
-
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Canada
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Eastern Canada
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Quebec
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Gaspe Peninsula (1)
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-
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Elk Point Basin (1)
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Western Canada
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Alberta
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Medicine Hat Alberta (1)
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Saskatchewan (1)
-
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Central America
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El Salvador (1)
-
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Commonwealth of Independent States
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Russian Federation
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Bashkortostan Russian Federation (1)
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Irkutsk Basin (1)
-
Irkutsk Russian Federation (1)
-
Khabarovsk Russian Federation (1)
-
Krasnoyarsk Russian Federation (1)
-
Novosibirsk Russian Federation (1)
-
Russian Far East (1)
-
Siberian Platform
-
Yenisei Ridge (1)
-
-
Tomsk Russian Federation (2)
-
Tyumen Russian Federation
-
Khanty-Mansi Russian Federation
-
Salym Field (1)
-
Surgut Russian Federation (1)
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-
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Yakutia Russian Federation (1)
-
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Urals
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Southern Urals (1)
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West Siberia (2)
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Europe
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Bashkortostan Russian Federation (1)
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Central Europe
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Switzerland (1)
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Southern Europe
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Italy
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Apennines
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Southern Apennines (1)
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Basilicata Italy (1)
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Western Europe
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Belgium (1)
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France
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Var France (1)
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Ireland
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Dublin Ireland (1)
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United Kingdom
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Great Britain
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England
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Wessex Basin (1)
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Wiltshire England (1)
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-
-
-
-
Makran (1)
-
Malay Archipelago
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Borneo
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East Malaysia
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Sarawak Malaysia (1)
-
-
-
-
Mediterranean region
-
Calabrian Arc (1)
-
-
Midlands (1)
-
North America
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Appalachians
-
Northern Appalachians (1)
-
-
Glacier National Park (1)
-
Gulf Coastal Plain (4)
-
Rocky Mountains (1)
-
Williston Basin (3)
-
-
Pacific Ocean
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East Pacific
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Northeast Pacific
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Gulf of Alaska (1)
-
-
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North Pacific
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Bering Sea (1)
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Northeast Pacific
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Gulf of Alaska (1)
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Northwest Pacific
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South China Sea (1)
-
-
-
West Pacific
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Northwest Pacific
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South China Sea (1)
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-
-
-
United States
-
Alaska
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Anadarko Basin (1)
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California
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Georgia (1)
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Illinois (1)
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Indiana (1)
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Klamath Mountains (1)
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Louisiana
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Allen Parish Louisiana (1)
-
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Maine
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Kennebec County Maine (1)
-
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Midcontinent (1)
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Montana
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Flathead County Montana (1)
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North Dakota (2)
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Pennsylvania (1)
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West Virginia (1)
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Wisconsin
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commodities
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aggregate (2)
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bitumens (1)
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construction materials (1)
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energy sources (1)
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feldspar deposits (1)
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geothermal energy (1)
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industrial minerals (1)
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kaolin deposits (2)
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metal ores
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base metals (1)
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copper ores (2)
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gold ores (1)
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polymetallic ores (1)
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silver ores (1)
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zinc ores (1)
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mineral deposits, genesis (3)
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mineral exploration (1)
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oil and gas fields (3)
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petroleum
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natural gas
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shale gas (2)
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zeolite deposits (1)
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elements, isotopes
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carbon
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C-13/C-12 (1)
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chemical elements (1)
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hydrogen (1)
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isotope ratios (2)
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isotopes
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stable isotopes
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C-13/C-12 (1)
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Nd-144/Nd-143 (1)
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O-18/O-16 (1)
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Sr-87/Sr-86 (1)
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-
-
metals
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actinides
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thorium (1)
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uranium (1)
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alkali metals
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potassium (1)
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-
alkaline earth metals
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barium (1)
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strontium
-
Sr-87/Sr-86 (1)
-
-
-
hafnium (1)
-
molybdenum (1)
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niobium (1)
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (1)
-
-
-
zirconium (1)
-
-
oxygen
-
O-18/O-16 (1)
-
-
-
fossils
-
Chordata
-
Vertebrata
-
Tetrapoda (1)
-
-
-
ichnofossils (1)
-
Invertebrata
-
Arthropoda
-
Trilobitomorpha
-
Trilobita (1)
-
-
-
Brachiopoda (1)
-
Cnidaria
-
Scyphozoa
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Conulariida (1)
-
-
-
Echinodermata
-
Crinozoa
-
Crinoidea (1)
-
-
-
Mollusca
-
Tentaculitida (1)
-
-
Protista
-
Foraminifera
-
Rotaliina
-
Orbitoidacea
-
Lepidocyclina (1)
-
-
-
-
Radiolaria (1)
-
-
-
microfossils (4)
-
palynomorphs (1)
-
Plantae
-
algae
-
Coccolithophoraceae (1)
-
-
Pteridophyta (1)
-
Spermatophyta
-
Gymnospermae
-
Coniferales (1)
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Glossopteridales (1)
-
-
-
-
-
geochronology methods
-
K/Ar (1)
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-
geologic age
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Cenozoic
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Quaternary (2)
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Tertiary
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middle Tertiary (1)
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Neogene
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Miocene
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middle Miocene
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upper Miocene
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Messinian (2)
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Tortonian (1)
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Pliocene (1)
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-
Paleogene
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Eocene
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lower Eocene (1)
-
-
Oligocene
-
lower Oligocene
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Rupelian (1)
-
-
-
Paleocene (1)
-
Wilcox Group (1)
-
-
-
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Albian (1)
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Mannville Group (1)
-
-
Upper Cretaceous (1)
-
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Jurassic
-
Bazhenov Formation (1)
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Lower Jurassic (1)
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Middle Jurassic
-
Callovian (3)
-
-
Opalinus Clay (2)
-
Upper Jurassic
-
Galice Formation (1)
-
Kimmeridge Clay (1)
-
Oxfordian (3)
-
-
-
Triassic
-
Upper Triassic (1)
-
-
-
Paleozoic
-
Cambrian (1)
-
Carboniferous
-
Mississippian
-
Lower Mississippian
-
Fort Payne Formation (1)
-
-
Upper Mississippian
-
Meramecian (1)
-
-
-
Pennsylvanian
-
Upper Pennsylvanian
-
Missourian
-
Plattsburg Limestone (1)
-
Stanton Formation (1)
-
Wyandotte Limestone (1)
-
-
-
-
-
Devonian
-
Middle Devonian
-
Cedar Valley Formation (1)
-
Eifelian (1)
-
Prairie Evaporite (1)
-
Winnipegosis Formation (2)
-
-
Upper Devonian (1)
-
-
New Albany Shale (1)
-
Ordovician
-
Lower Ordovician
-
Tremadocian (1)
-
-
Martinsburg Formation (1)
-
Upper Ordovician (2)
-
-
Permian
-
Ecca Group (1)
-
Gharif Formation (1)
-
Lower Permian
-
Al Khlata Formation (1)
-
-
Upper Permian (1)
-
-
Silurian
-
Lower Silurian
-
Llandovery
-
Interlake Formation (1)
-
-
-
Middle Silurian
-
Keefer Sandstone (1)
-
McKenzie Formation (1)
-
Waldron Shale (1)
-
-
Waterville Formation (1)
-
-
upper Paleozoic
-
Dwyka Formation (2)
-
Kaskaskia Sequence (2)
-
-
-
Precambrian
-
upper Precambrian
-
Proterozoic
-
Mesoproterozoic
-
Belt Supergroup (1)
-
Helena Formation (1)
-
-
Neoproterozoic
-
Riphean (1)
-
-
-
-
-
-
igneous rocks
-
igneous rocks
-
plutonic rocks
-
granites (1)
-
-
volcanic rocks
-
glasses (1)
-
pyroclastics
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hyaloclastite (1)
-
-
rhyolites (1)
-
-
-
-
metamorphic rocks
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metamorphic rocks
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gneisses (1)
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hornfels (1)
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marbles (1)
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metasedimentary rocks
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metapelite (1)
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metasomatic rocks
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skarn (1)
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schists (1)
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slates (1)
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turbidite (1)
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minerals
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carbonates
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aragonite (1)
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calcite (1)
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dolomite (4)
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minerals (1)
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phosphates (1)
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silicates
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framework silicates
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silica minerals
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quartz (1)
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zeolite group
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analcime (1)
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-
-
sheet silicates
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chlorite group
-
chlorite (1)
-
-
clay minerals
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kaolinite (7)
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montmorillonite (1)
-
smectite (4)
-
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illite (7)
-
mica group
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muscovite (2)
-
-
-
-
sulfates
-
alunite (1)
-
anhydrite (2)
-
natroalunite (1)
-
-
sulfides
-
pyrite (1)
-
-
-
Primary terms
-
Africa
-
East Africa
-
Tanzania
-
Olduvai Gorge (1)
-
-
-
North Africa
-
Algeria (1)
-
Illizi Basin (1)
-
Tunisia (1)
-
-
Sahel (1)
-
Southern Africa
-
Karoo Basin (3)
-
South Africa
-
Cape fold belt (2)
-
KwaZulu-Natal South Africa (2)
-
-
-
-
Arctic Ocean
-
Beaufort Sea (1)
-
Chukchi Sea (1)
-
-
Arctic region (1)
-
Asia
-
Arabian Peninsula
-
Oman (1)
-
Saudi Arabia (1)
-
-
Far East
-
Borneo
-
East Malaysia
-
Sarawak Malaysia (1)
-
-
-
China
-
Inner Mongolia China
-
Erlian Basin (1)
-
-
Ordos Basin (1)
-
Qaidam Basin (1)
-
-
Malaysia
-
East Malaysia
-
Sarawak Malaysia (1)
-
-
-
-
Indian Peninsula
-
Indus Basin (1)
-
Pakistan
-
Sind Pakistan (1)
-
-
-
Irkutsk Basin (1)
-
Irkutsk Russian Federation (1)
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Khabarovsk Russian Federation (1)
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Krasnoyarsk Russian Federation (1)
-
Middle East
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Iran (1)
-
Turkey
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Eskisehir Turkey (1)
-
-
Zagros (1)
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-
Novosibirsk Russian Federation (1)
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Russian Far East (1)
-
Siberia (1)
-
Siberian Platform
-
Yenisei Ridge (1)
-
-
Tomsk Russian Federation (2)
-
Tyumen Russian Federation
-
Khanty-Mansi Russian Federation
-
Salym Field (1)
-
Surgut Russian Federation (1)
-
-
-
West Siberia (2)
-
Yakutia Russian Federation (1)
-
-
Atlantic Ocean
-
North Atlantic
-
Gulf of Mexico (3)
-
-
-
bitumens (1)
-
Canada
-
Eastern Canada
-
Quebec
-
Gaspe Peninsula (1)
-
-
-
Elk Point Basin (1)
-
Western Canada
-
Alberta
-
Medicine Hat Alberta (1)
-
-
Saskatchewan (1)
-
-
-
carbon
-
C-13/C-12 (1)
-
-
Cenozoic
-
Quaternary (2)
-
Tertiary
-
middle Tertiary (1)
-
Neogene
-
Miocene
-
middle Miocene
-
Langhian (2)
-
-
upper Miocene
-
Messinian (2)
-
Tortonian (1)
-
-
-
Pliocene (1)
-
-
Paleogene
-
Eocene
-
lower Eocene (1)
-
-
Oligocene
-
lower Oligocene
-
Rupelian (1)
-
-
-
Paleocene (1)
-
Wilcox Group (1)
-
-
-
-
Central America
-
El Salvador (1)
-
-
chemical analysis (1)
-
Chordata
-
Vertebrata
-
Tetrapoda (1)
-
-
-
clay mineralogy (8)
-
climate change (1)
-
construction materials (1)
-
continental shelf (1)
-
crust (1)
-
crystal chemistry (1)
-
crystal structure (1)
-
crystallography (1)
-
dams (1)
-
data processing (1)
-
deformation (4)
-
diagenesis (15)
-
economic geology (3)
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energy sources (1)
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engineering geology (1)
-
Europe
-
Bashkortostan Russian Federation (1)
-
Central Europe
-
Switzerland (1)
-
-
Southern Europe
-
Italy
-
Apennines
-
Southern Apennines (1)
-
-
Basilicata Italy (1)
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Calabria Italy (1)
-
-
-
Western Europe
-
Belgium (1)
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France
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Meuse France (1)
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Var France (1)
-
-
Ireland
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Dublin Ireland (1)
-
-
United Kingdom
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Great Britain
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England
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Dorset England (1)
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Wessex Basin (1)
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Wiltshire England (1)
-
-
-
-
-
-
faults (8)
-
feldspar deposits (1)
-
folds (1)
-
foliation (2)
-
fractures (2)
-
geochemistry (14)
-
geomorphology (1)
-
geophysical methods (4)
-
geosynclines (1)
-
geothermal energy (1)
-
glacial geology (1)
-
government agencies
-
survey organizations (1)
-
-
ground water (1)
-
hydrogen (1)
-
hydrology (1)
-
ichnofossils (1)
-
igneous rocks
-
plutonic rocks
-
granites (1)
-
-
volcanic rocks
-
glasses (1)
-
pyroclastics
-
hyaloclastite (1)
-
-
rhyolites (1)
-
-
-
inclusions
-
fluid inclusions (1)
-
-
industrial minerals (1)
-
intrusions (1)
-
Invertebrata
-
Arthropoda
-
Trilobitomorpha
-
Trilobita (1)
-
-
-
Brachiopoda (1)
-
Cnidaria
-
Scyphozoa
-
Conulariida (1)
-
-
-
Echinodermata
-
Crinozoa
-
Crinoidea (1)
-
-
-
Mollusca
-
Tentaculitida (1)
-
-
Protista
-
Foraminifera
-
Rotaliina
-
Orbitoidacea
-
Lepidocyclina (1)
-
-
-
-
Radiolaria (1)
-
-
-
isotopes
-
stable isotopes
-
C-13/C-12 (1)
-
Nd-144/Nd-143 (1)
-
O-18/O-16 (1)
-
Sr-87/Sr-86 (1)
-
-
-
kaolin deposits (2)
-
lexicons (1)
-
Malay Archipelago
-
Borneo
-
East Malaysia
-
Sarawak Malaysia (1)
-
-
-
-
marine installations (1)
-
Mediterranean region
-
Calabrian Arc (1)
-
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Albian (1)
-
Mannville Group (1)
-
-
Upper Cretaceous (1)
-
-
Jurassic
-
Bazhenov Formation (1)
-
Lower Jurassic (1)
-
Middle Jurassic
-
Callovian (3)
-
-
Opalinus Clay (2)
-
Upper Jurassic
-
Galice Formation (1)
-
Kimmeridge Clay (1)
-
Oxfordian (3)
-
-
-
Triassic
-
Upper Triassic (1)
-
-
-
metal ores
-
base metals (1)
-
copper ores (2)
-
gold ores (1)
-
polymetallic ores (1)
-
silver ores (1)
-
zinc ores (1)
-
-
metals
-
actinides
-
thorium (1)
-
uranium (1)
-
-
alkali metals
-
potassium (1)
-
-
alkaline earth metals
-
barium (1)
-
strontium
-
Sr-87/Sr-86 (1)
-
-
-
hafnium (1)
-
molybdenum (1)
-
niobium (1)
-
rare earths
-
neodymium
-
Nd-144/Nd-143 (1)
-
-
-
zirconium (1)
-
-
metamorphic rocks
-
gneisses (1)
-
hornfels (1)
-
marbles (1)
-
metasedimentary rocks
-
metapelite (1)
-
-
metasomatic rocks
-
skarn (1)
-
-
schists (1)
-
slates (1)
-
-
metamorphism (4)
-
metasomatism (6)
-
micropaleontology (1)
-
mineral deposits, genesis (3)
-
mineral exploration (1)
-
minerals (1)
-
North America
-
Appalachians
-
Northern Appalachians (1)
-
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Lithological controls on the expansion of unbound aggregates in Dublin, eastern Ireland: two contrasting cases
Seismic-based characterization of reservoir heterogeneity within the Meramec interval of the STACK play, Central Oklahoma
Lithostratigraphy and sedimentology of the Middle Devonian Tra-Tra Formation, including the Grootrivier Member (Bokkeveld Group, Cape Supergroup), South Africa
Shale gas potential of the Prince Albert Formation: A preliminary study
What matters for flow and recovery in carbonate gas reservoirs: Insights from the mature Central Luconia Province, offshore Sarawak, Malaysia
Site screening of clay formations in NW China as host rocks for a high-level radioactive waste disposal repository
Abstract Deep geological disposal of high-level radioactive waste (HLW) in a repository with a system of engineered and natural barriers has been recognized as an appropriate disposal concept by Chinese authorities since 2003, and both crystalline rocks and argillaceous rocks are considered as the candidate host rocks for HLW disposal repository. The 1:200 000 regional survey indicated that there are potential clay formations in Mesozoic–Cenozoic sedimentary basins in NW China. Five candidate areas have been suggested with potential clay formations including the Tamusu and Suhongtu areas with upper K 1 Bayingebi clay formations in the east Bayingebi Basin, in the Inner Mongolia Autonomous Region. On the basis of a detailed ground geological, hydrological and geophysical surveys, two test boreholes drilled to a depth of 800 m in the Tamusu area revealed that there are three lacustrine-facies clay formations (K 1 b 2-3 , K 1 b 2-2 and K 1 b 2-1 ). The thickness of the K 1 b 2-3 and K 1 b 2-2 clay formations is about 300–600 m with sandstone and siltstone interbeds, while the thickness of the K 1 b 2-1 homogeneous clay formation is more than 200 m with the depth of 450 m below the surface. The spatial extension of the clay formations could meet the fundamental criteria to ensure the long-term safety of the repository. Initial mineralogical studies on core samples indicated that the mineral assemblage is dominated by analcite, kaolinite, illite and dolomite. The homogeneous argillaceous rocks rich in analcite in Tamusu area could be a new type of host rock for a HLW disposal repository.
Estimation of original kerogen type and hydrogen index using inorganic geochemical proxies: Implications for assessing shale gas potential in the Devonian Horn River Formation of western Canada
PORE GEOMETRY AS A LIMITING FACTOR FOR ANION DIFFUSION IN ARGILLACEOUS ROCKS
Hydrothermal alteration products in the vicinity of the Ahırözü kaolin deposits, Mihalıççık-Eskişehir,Turkey
Abstract: Late Ordovician ( c. 445 Ma) glacial sandstones form important gas reservoirs in the Illizi Basin, SW Algeria. These reservoirs have a high degree of depositional and diagenetic complexity, such that understanding and predicting reservoir quality (RQ) presents a major challenge to their economic development. Porosity is typically 1–10%, but reaches up to 15% and permeability is typically <10 −15 m 2 (<1 mD), but locally reaches >10 −13 m 2 (>100 mD). The key questions addressed herein concern the development and distribution of this RQ variability, specifically why has good RQ been locally preserved? Primary depositional fabric exerts a strong control on RQ. Muddy sandstones are either highly compacted or pervasively cemented by quartz and microporous illite, and have very poor RQ. Only fine- to medium-grained, moderately well sorted, clean sandstones can contain good RQ, but texturally and mineralogically similar sandstones span a wide range of porosity and permeability. This range is primarily driven by the degree of quartz cementation, with incomplete cementation resulting in the best RQ. Quartz overgrowths in incompletely cemented clean sandstones are patchy and non-luminescent in scanning electron microscopy with cathodoluminescence (SEM-CL), possibly indicating slow growth rates. There is tentative evidence to link incomplete quartz cementation with oil charging of the reservoir. An alternative or additional explanation of RQ preservation may be related to limited silica supply in the centres of the thickest, stacked, clean sandstones, where the better RQ tends to reside. The results of this study imply that sustained high-energy depositional processes, coupled with an early oil charge, are prerequisites for retaining the best RQ. This has important implications for the exploration and development of Late Ordovician glacial sandstones in the Illizi Basin, and potentially similar plays elsewhere.