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NARROW
GeoRef Subject
-
all geography including DSDP/ODP Sites and Legs
-
Africa
-
Southern Africa
-
South Africa (1)
-
-
West Africa
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Nigeria (1)
-
-
-
Antarctica
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Ross Ice Shelf
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McMurdo Ice Shelf (1)
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Arctic region
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Greenland
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Asia
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Arabian Peninsula
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Saudi Arabia (2)
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Buryat Russian Federation (1)
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Far East
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China
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Indian Peninsula
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Jammu and Kashmir
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Pakistan
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Kamchatka Russian Federation
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Kamchatka Peninsula (1)
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Novosibirsk Russian Federation (1)
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Sayan
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Eastern Sayan (1)
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Siberia (2)
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Yenisei River (1)
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Atlantic Ocean
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North Atlantic
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Mississippi Fan (1)
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North Sea (3)
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Atlantic Ocean Islands
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Shetland Islands (1)
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Australasia
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Australia
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Western Australia
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Canada
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Western Canada
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Commonwealth of Independent States
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Russian Federation
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Novosibirsk Russian Federation (1)
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Yenisei River (1)
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Europe
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Alps
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Germany
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Southern Europe
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Western Europe
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France
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Ireland
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United Kingdom
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England
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Scotland
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Indian Ocean
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Mexico
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Brazil
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United States
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Texas
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commodities
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elements, isotopes
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chemical ratios (3)
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hydrogen
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isotope ratios (7)
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metals
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uranium
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cesium
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potassium
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radium
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strontium
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aluminum (1)
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lead
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noble gases
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oxygen
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phosphorus (1)
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sulfur
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S-34/S-32 (1)
-
-
-
fossils
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Chordata
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Vertebrata
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Tetrapoda
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Reptilia
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Diapsida
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Ichthyosauria (1)
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ichnofossils
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Skolithos (1)
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Invertebrata
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Brachiopoda (2)
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Conodonta (2)
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Plantae
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geochronology methods
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Cenozoic
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Tertiary
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Paleogene
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Dalradian (1)
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Mesozoic
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Albian (1)
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Upper Cretaceous
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Blackhawk Formation (1)
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Campanian (2)
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Castlegate Sandstone (1)
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Senonian (2)
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-
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Jurassic
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Fernie Formation (1)
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Lower Jurassic
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Hettangian (1)
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lower Liassic (1)
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Nordegg Member (1)
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Middle Jurassic (1)
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Upper Jurassic
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Arab Formation (1)
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Kimmeridge Clay (1)
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Triassic
-
Lower Triassic
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Permian-Triassic boundary (1)
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-
Upper Triassic
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Rhaetian (1)
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Triassic-Jurassic boundary (1)
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-
-
-
Paleozoic
-
Carboniferous
-
Mississippian
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Upper Mississippian
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Chesterian (1)
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Pennsylvanian
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Upper Pennsylvanian
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Cisco Group (1)
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Virgilian (1)
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Devonian
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Upper Devonian
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Famennian (1)
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Frasnian (1)
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-
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Ordovician
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Permian
-
Lower Permian
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Wolfcampian (1)
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Upper Permian
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Permian-Triassic boundary (1)
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-
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Silurian
-
Lower Silurian
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Qalibah Formation (1)
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Woodford Shale (1)
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Precambrian
-
upper Precambrian
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Proterozoic
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Mesoproterozoic (1)
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Neoproterozoic
-
Riphean
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upper Riphean (1)
-
-
-
-
-
-
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igneous rocks
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igneous rocks
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kimberlite (1)
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plutonic rocks
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anorthosite (1)
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diabase
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tholeiitic dolerite (1)
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diorites (1)
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gabbros (1)
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granites (3)
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ultramafics (1)
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volcanic rocks
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andesites (1)
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basalts (3)
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dacites (1)
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pyroclastics
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rhyodacites (1)
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ophiolite (1)
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metamorphic rocks
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minerals
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oxides
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pyroxene group (2)
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framework silicates
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silica minerals
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quartz (2)
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orthosilicates
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nesosilicates
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olivine group
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olivine (1)
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sheet silicates
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clay minerals
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kaolinite (1)
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montmorillonite (2)
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illite (2)
-
-
-
sulfides
-
pyrite (1)
-
-
-
Primary terms
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absolute age (4)
-
Africa
-
Southern Africa
-
South Africa (1)
-
-
West Africa
-
Nigeria (1)
-
-
-
Antarctica
-
Ross Ice Shelf
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McMurdo Ice Shelf (1)
-
-
-
Arctic region
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Greenland
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South Greenland (1)
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-
-
Asia
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Arabian Peninsula
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Saudi Arabia (2)
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Buryat Russian Federation (1)
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Far East
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China
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Xizang China (1)
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Indian Peninsula
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Bangladesh (1)
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Jammu and Kashmir
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Azad Kashmir Pakistan (1)
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Pakistan
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Azad Kashmir Pakistan (1)
-
-
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Kamchatka Russian Federation
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Kamchatka Peninsula (1)
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Novosibirsk Russian Federation (1)
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Sayan
-
Eastern Sayan (1)
-
-
Siberia (2)
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Yenisei River (1)
-
-
Atlantic Ocean
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North Atlantic
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Gulf of Mexico
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Mississippi Fan (1)
-
-
North Sea (3)
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Northeast Atlantic (1)
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-
-
-
Atlantic Ocean Islands
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Shetland Islands (1)
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-
atmosphere (1)
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Australasia
-
Australia
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Queensland Australia
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Mount Isa Inlier (1)
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Western Australia
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Capricorn Orogen (1)
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bitumens (2)
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Canada
-
Eastern Canada
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Quebec (1)
-
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Western Canada
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Alberta (2)
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British Columbia (2)
-
-
-
carbon
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C-13/C-12 (6)
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C-14 (2)
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organic carbon (4)
-
-
Cenozoic
-
Quaternary
-
Holocene (4)
-
Pleistocene
-
upper Pleistocene (1)
-
-
-
Tertiary
-
Neogene
-
Miocene (1)
-
-
Paleogene
-
Oligocene (1)
-
Paleocene (1)
-
-
-
-
chemical analysis (1)
-
Chordata
-
Vertebrata
-
Tetrapoda
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Reptilia
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Diapsida
-
Ichthyosauria (1)
-
-
-
-
-
-
clay mineralogy (2)
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construction materials (1)
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continental shelf (2)
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crust (2)
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crystal structure (1)
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data processing (7)
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deformation (3)
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diagenesis (2)
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diamond deposits (1)
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earthquakes (1)
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economic geology (4)
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energy sources (1)
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Europe
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Alps
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Eastern Alps
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Carnic Alps (1)
-
-
-
Belarus (1)
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Central Europe
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Austria (2)
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Black Forest (1)
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Czech Republic
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Moravia
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Moravian Karst (1)
-
-
-
Germany
-
Harz Mountains (1)
-
Saxony-Anhalt Germany (2)
-
-
Poland (1)
-
-
Southern Europe
-
Italy
-
Veneto Italy
-
Belluno Italy (1)
-
-
-
-
Western Europe
-
France
-
Aquitaine Basin (1)
-
Bearn (1)
-
Loiret France
-
Orleans France (1)
-
-
Loir-et-Cher France (1)
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Paris Basin (1)
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Quercy (1)
-
-
Ireland
-
Donegal Ireland (1)
-
-
United Kingdom
-
Great Britain
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England
-
Dorset England (1)
-
Yorkshire England (1)
-
-
Scotland
-
Scottish Highlands
-
Grampian Highlands
-
Cairngorm Mountains (1)
-
-
-
Shetland Islands (1)
-
-
-
-
-
-
faults (5)
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fractures (1)
-
geochemistry (11)
-
geochronology (1)
-
geomorphology (1)
-
geophysical methods (17)
-
geophysics (1)
-
geothermal energy (1)
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glacial geology (2)
-
ground water (3)
-
heat flow (2)
-
hydrogen
-
D/H (1)
-
-
hydrology (1)
-
ichnofossils
-
Skolithos (1)
-
-
igneous rocks
-
kimberlite (1)
-
plutonic rocks
-
anorthosite (1)
-
diabase
-
tholeiitic dolerite (1)
-
-
diorites (1)
-
gabbros (1)
-
granites (3)
-
ultramafics (1)
-
-
volcanic rocks
-
andesites (1)
-
basalts (3)
-
dacites (1)
-
pyroclastics
-
tuff (1)
-
-
rhyodacites (1)
-
-
-
inclusions
-
fluid inclusions (1)
-
-
Indian Ocean
-
Bay of Bengal (1)
-
-
Integrated Ocean Drilling Program
-
Expedition 308
-
IODP Site U1322 (1)
-
IODP Site U1324 (1)
-
-
Expedition 313
-
IODP Site M0027 (1)
-
IODP Site M0028 (1)
-
IODP Site M0029 (1)
-
-
-
intrusions (4)
-
Invertebrata
-
Arthropoda
-
Trilobitomorpha
-
Trilobita (1)
-
-
-
Brachiopoda (2)
-
Mollusca
-
Bivalvia (1)
-
Cephalopoda
-
Ammonoidea
-
Ammonites (1)
-
-
-
Gastropoda (1)
-
-
Porifera (1)
-
Protista
-
Foraminifera (4)
-
Radiolaria (2)
-
-
-
isotopes
-
radioactive isotopes
-
C-14 (2)
-
Cs-137 (3)
-
K-40 (4)
-
Pb-210 (3)
-
Ra-226 (1)
-
Sr-90 (1)
-
Th-232 (3)
-
U-235 (2)
-
U-238 (1)
-
-
stable isotopes
-
C-13/C-12 (6)
-
D/H (1)
-
O-18/O-16 (1)
-
S-34/S-32 (1)
-
Sr-87/Sr-86 (1)
-
-
-
lava (1)
-
Mesozoic
-
Cretaceous
-
Lower Cretaceous
-
Albian (1)
-
Aptian (1)
-
Barremian (1)
-
-
Upper Cretaceous
-
Blackhawk Formation (1)
-
Campanian (2)
-
Castlegate Sandstone (1)
-
Coniacian (1)
-
Santonian (1)
-
Senonian (2)
-
-
-
Jurassic
-
Fernie Formation (1)
-
Lower Jurassic
-
Hettangian (1)
-
lower Liassic (1)
-
Nordegg Member (1)
-
Triassic-Jurassic boundary (1)
-
-
Middle Jurassic (1)
-
Upper Jurassic
-
Arab Formation (1)
-
Kimmeridge Clay (1)
-
Kimmeridgian (1)
-
-
-
Triassic
-
Lower Triassic
-
Permian-Triassic boundary (1)
-
-
Upper Triassic
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Rhaetian (1)
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Triassic-Jurassic boundary (1)
-
-
-
-
metal ores
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base metals (2)
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gold ores (2)
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gamma-ray spectra
The Inskie Springs: New Insights into Low-Radon Waters
Improving porosity and gamma-ray prediction for the Middle Jurassic Hugin sandstones in the southern Norwegian North Sea with the application of deep neural networks
ABSTRACT Airborne radiometric (gamma-ray) data provide estimates of the concentrations of potassium (K), thorium (Th), and uranium (U) in soil, regolith, and bedrock. Radiometric data constitute an important source of geochemical information, commonly used in mineral exploration and for geological mapping of Earth and other planets. Airborne radiometric data have rarely been applied to the exploration and analyses of impact structures, in contrast with other conventional geophysical tools (e.g., gravimetry, magnetism, and seismic reflection/refraction). This work represents the first systematic survey of the K, Th, and U radiometric signatures of Australian impact structures, based on the continent-wide airborne radiometric coverage of Australia. We first formulated several hypotheses regarding the possible causes of formation of circular radiometric patterns associated with impact structures. Then, the radiometric signatures of 17 exposed impact structures in Australia were documented. Our observations confirmed the supposition that impact structures are commonly associated with circular radiometric patterns. We then selected the five structures with the most prominent circular radiometric patterns (Gosses Bluff, Lawn Hill, Acraman, Spider, and Shoemaker), and we discuss the possible origin of these anomalies. Based on these five case studies, we argue that such patterns result from either crustal deformation induced by the impact event and/or from postimpact superficial processes controlled by the crater topography. This work also suggests that airborne radiometric data may be useful, in combination with other geophysical tools, in the search for new possible impact structures.
Stochastic clustering and pattern matching for real-time geosteering
The Decorah structure, northeastern Iowa: Geology and evidence for formation by meteorite impact
The Age and Origin of Small Offsets at Van Matre Ranch along the San Andreas Fault in the Carrizo Plain, California
With the myriad of measurement techniques and definitions of clays, the first question generally asked is “how much clay is there” in a sample? This often refers to the magnitude of a clay attribute in the sample and the answer to this question may vary depending on the measurement method. Does the method measure the clay-mineral type, the size distribution or mean size, the surface area, cation exchange capacity (CEC), rheology, or plasticity? Clay mineral type, particle size, and surface area are commonly used in mining operations to optimize oil-sand ore blending. In bitumen extraction and tailings management, where slurry behavior contributes to the process performance, propertiess uch as rheology and plasticity are also used. The previous chapters in the volume have introduced the various properties of clay particles and clay minerals. The present chapter describes the common methods of measuring clays and clay minerals in oil sands.
The clay minerals present in the oil-sands ore are responsible for some of the most challenging (and intriguing) processing behavior experienced on a routine basis in oil-sands surface mining. In previous chapters, significant details have been provided on how specific clay properties can give rise to changes in slurry rheology and interface phenomena. Because the bitumen extraction process relies heavily on manipulation of interfacial effects to enhance separation, changes in clay content in the ore, not surprisingly, can have a dramatic impact on the ability to process the material. This chapter provides an overview of the extraction process, the influence of clay minerals on bitumen recovery, and the challenges in reacting to changes in the ore clay content in a typical operation. The chapters that follow focus on the larger issue of tailings treatment to create a reclaimed landscape at the end of mine life.