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NARROW
Format
Article Type
Journal
Publisher
Section
GeoRef Subject
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all geography including DSDP/ODP Sites and Legs
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Africa
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West Africa
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Nigeria (1)
-
-
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Asia
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Far East
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China
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Ordos Basin (1)
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Xinjiang China
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Junggar Basin (1)
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-
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Tien Shan (1)
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-
Black Mesa Basin (1)
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Canada
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Western Canada
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Alberta (1)
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Europe
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Pyrenees (1)
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Western Europe
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France
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Hautes-Pyrenees France
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Lourdes France (1)
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United Kingdom
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Great Britain
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England
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Wessex Basin (2)
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Scotland
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Moray Firth (1)
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Green River (3)
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Green River basin (6)
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North America
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Appalachians (1)
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Great Plains (1)
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Keweenawan Rift (1)
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Rocky Mountains
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Southern Rocky Mountains (1)
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U. S. Rocky Mountains
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Absaroka Range (1)
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Uinta Mountains (3)
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Wasatch Range (1)
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Western Interior
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Western Interior Seaway (1)
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Western Overthrust Belt (1)
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Williston Basin (2)
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Raton Basin (1)
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Rome Trough (1)
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San Juan Basin (7)
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South America
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Andes
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Eastern Cordillera (1)
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Argentina
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Neuquen Basin (2)
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-
Brazil
-
Sergipe-Alagoas Basin (1)
-
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Colombia (1)
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United States
-
Absaroka Fault (1)
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Arizona (3)
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Bighorn Basin (4)
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Black Warrior Basin (1)
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Book Cliffs (4)
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California
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Southern California (1)
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-
Central Basin Platform (1)
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Colorado
-
Garfield County Colorado (1)
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Piceance Basin (5)
-
Rio Blanco County Colorado (2)
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-
Colorado Plateau (5)
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Delaware Basin (1)
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Denver Basin (2)
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Eastern U.S. (1)
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Four Corners (4)
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Kentucky
-
Rough Creek fault zone (1)
-
-
Midcontinent (1)
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Mojave Desert (1)
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Mullen Creek-Nash Fork shear zone (1)
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Nevada
-
Nye County Nevada (1)
-
-
New Mexico (7)
-
North Dakota (1)
-
Paradox Basin (9)
-
Powder River basin (7)
-
Reelfoot Rift (1)
-
Sevier orogenic belt (1)
-
Southern Oklahoma Aulacogen (1)
-
U. S. Rocky Mountains
-
Absaroka Range (1)
-
Uinta Mountains (3)
-
Wasatch Range (1)
-
-
Uinta Basin (128)
-
Uncompahgre Uplift (1)
-
Utah
-
Carbon County Utah (3)
-
Daggett County Utah (1)
-
Duchesne County Utah (10)
-
Emery County Utah
-
Emery Utah (1)
-
-
Grand County Utah (2)
-
Henry Mountains (1)
-
Kaiparowits Plateau (2)
-
Uintah County Utah (14)
-
Wasatch County Utah (1)
-
Wasatch Plateau (1)
-
-
Washakie Basin (3)
-
Western U.S. (7)
-
Wyoming
-
Campbell County Wyoming (1)
-
Carbon County Wyoming
-
Shirley Basin (1)
-
-
Hanna Basin (2)
-
Johnson County Wyoming (1)
-
Natrona County Wyoming (1)
-
Sheridan County Wyoming (1)
-
-
-
Willow Creek (1)
-
Wind River basin (3)
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-
commodities
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bitumens
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asphalt (3)
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brines (2)
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energy sources (7)
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metal ores
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uranium ores (1)
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-
mineral exploration (1)
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oil and gas fields (12)
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petroleum
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natural gas
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coalbed methane (2)
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-
shale oil (1)
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-
tight sands (2)
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elements, isotopes
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carbon
-
C-13/C-12 (6)
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-
hydrogen (1)
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isotope ratios (6)
-
isotopes
-
stable isotopes
-
C-13/C-12 (6)
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O-18/O-16 (5)
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S-34/S-32 (1)
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-
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metals
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alkali metals
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sodium (1)
-
-
alkaline earth metals
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calcium (1)
-
magnesium (1)
-
-
-
oxygen
-
O-18/O-16 (5)
-
-
sulfur
-
S-34/S-32 (1)
-
-
-
fossils
-
burrows (1)
-
Chordata
-
Vertebrata
-
Tetrapoda
-
Mammalia (3)
-
Reptilia (1)
-
-
-
-
ichnofossils (1)
-
Invertebrata
-
Arthropoda
-
Mandibulata
-
Crustacea
-
Ostracoda (2)
-
-
-
-
Mollusca
-
Bivalvia (1)
-
Cephalopoda (1)
-
Gastropoda (2)
-
-
-
microfossils (2)
-
Plantae (1)
-
-
geochronology methods
-
Ar/Ar (1)
-
K/Ar (1)
-
paleomagnetism (1)
-
U/Pb (2)
-
-
geologic age
-
Cenozoic
-
Tertiary
-
lower Tertiary (2)
-
Paleogene
-
Duchesne River Formation (8)
-
Eocene
-
Bridger Formation (2)
-
Colton Formation (5)
-
Green River Formation (56)
-
Lake Uinta (5)
-
lower Eocene
-
Willwood Formation (1)
-
-
middle Eocene (1)
-
Parachute Creek Member (3)
-
upper Eocene
-
Uinta Formation (6)
-
-
-
Flagstaff Formation (1)
-
Paleocene
-
lower Paleocene
-
K-T boundary (1)
-
-
upper Paleocene (1)
-
-
Wasatch Formation (13)
-
-
-
-
Mesozoic
-
Cretaceous
-
Dakota Formation (3)
-
Lower Cretaceous
-
Mowry Shale (2)
-
-
Mancos Shale (1)
-
Upper Cretaceous
-
Blackhawk Formation (1)
-
Campanian (2)
-
Castlegate Sandstone (1)
-
Cenomanian (1)
-
Frontier Formation (4)
-
K-T boundary (1)
-
Lance Formation (1)
-
Maestrichtian (1)
-
Mesaverde Group (8)
-
Senonian (1)
-
Turonian (2)
-
Williams Fork Formation (1)
-
-
-
Jurassic
-
Upper Jurassic
-
Entrada Sandstone (1)
-
-
-
Triassic
-
Upper Triassic
-
Yanchang Formation (1)
-
-
-
-
Paleozoic
-
Cambrian (2)
-
Carboniferous
-
Mississippian (1)
-
Pennsylvanian
-
Middle Pennsylvanian
-
Paradox Formation (1)
-
-
-
-
Devonian (2)
-
Minnelusa Formation (1)
-
Permian (1)
-
-
Precambrian
-
Archean (1)
-
Uinta Mountain Group (2)
-
upper Precambrian
-
Proterozoic (1)
-
-
-
-
igneous rocks
-
igneous rocks
-
volcanic rocks
-
pyroclastics
-
tuff (3)
-
-
-
-
-
minerals
-
carbonates
-
calcite (1)
-
dolomite (2)
-
-
minerals (3)
-
organic minerals
-
ozocerite (1)
-
-
silicates
-
chain silicates
-
leucosphenite (1)
-
-
framework silicates
-
feldspar group
-
alkali feldspar
-
sanidine (1)
-
-
-
zeolite group
-
analcime (1)
-
-
-
orthosilicates
-
nesosilicates
-
zircon group
-
zircon (2)
-
-
-
-
ring silicates (1)
-
sheet silicates
-
chlorite group
-
chlorite (1)
-
-
clay minerals
-
kaolinite (2)
-
smectite (1)
-
-
illite (2)
-
mica group
-
biotite (1)
-
-
-
-
sulfates
-
barite (1)
-
-
sulfides
-
pyrite (1)
-
-
-
Primary terms
-
absolute age (4)
-
Africa
-
West Africa
-
Nigeria (1)
-
-
-
Asia
-
Far East
-
China
-
Ordos Basin (1)
-
Xinjiang China
-
Junggar Basin (1)
-
-
-
-
Tien Shan (1)
-
-
bitumens
-
asphalt (3)
-
-
brines (2)
-
Canada
-
Western Canada
-
Alberta (1)
-
-
-
carbon
-
C-13/C-12 (6)
-
-
Cenozoic
-
Tertiary
-
lower Tertiary (2)
-
Paleogene
-
Duchesne River Formation (8)
-
Eocene
-
Bridger Formation (2)
-
Colton Formation (5)
-
Green River Formation (56)
-
Lake Uinta (5)
-
lower Eocene
-
Willwood Formation (1)
-
-
middle Eocene (1)
-
Parachute Creek Member (3)
-
upper Eocene
-
Uinta Formation (6)
-
-
-
Flagstaff Formation (1)
-
Paleocene
-
lower Paleocene
-
K-T boundary (1)
-
-
upper Paleocene (1)
-
-
Wasatch Formation (13)
-
-
-
-
Chordata
-
Vertebrata
-
Tetrapoda
-
Mammalia (3)
-
Reptilia (1)
-
-
-
-
clay mineralogy (5)
-
climate change (1)
-
crust (1)
-
data processing (1)
-
deformation (2)
-
diagenesis (13)
-
earthquakes (1)
-
economic geology (32)
-
energy sources (7)
-
engineering geology (2)
-
Europe
-
Pyrenees (1)
-
Western Europe
-
France
-
Hautes-Pyrenees France
-
Lourdes France (1)
-
-
-
United Kingdom
-
Great Britain
-
England
-
Wessex Basin (2)
-
-
Scotland
-
Moray Firth (1)
-
-
-
-
-
-
faults (8)
-
folds (4)
-
fractures (8)
-
geochemistry (10)
-
geochronology (1)
-
geophysical methods (6)
-
ground water (2)
-
heat flow (2)
-
hydrogen (1)
-
ichnofossils (1)
-
igneous rocks
-
volcanic rocks
-
pyroclastics
-
tuff (3)
-
-
-
-
Invertebrata
-
Arthropoda
-
Mandibulata
-
Crustacea
-
Ostracoda (2)
-
-
-
-
Mollusca
-
Bivalvia (1)
-
Cephalopoda (1)
-
Gastropoda (2)
-
-
-
isotopes
-
stable isotopes
-
C-13/C-12 (6)
-
O-18/O-16 (5)
-
S-34/S-32 (1)
-
-
-
maps (2)
-
Mesozoic
-
Cretaceous
-
Dakota Formation (3)
-
Lower Cretaceous
-
Mowry Shale (2)
-
-
Mancos Shale (1)
-
Upper Cretaceous
-
Blackhawk Formation (1)
-
Campanian (2)
-
Castlegate Sandstone (1)
-
Cenomanian (1)
-
Frontier Formation (4)
-
K-T boundary (1)
-
Lance Formation (1)
-
Maestrichtian (1)
-
Mesaverde Group (8)
-
Senonian (1)
-
Turonian (2)
-
Williams Fork Formation (1)
-
-
-
Jurassic
-
Upper Jurassic
-
Entrada Sandstone (1)
-
-
-
Triassic
-
Upper Triassic
-
Yanchang Formation (1)
-
-
-
-
metal ores
-
uranium ores (1)
-
-
metals
-
alkali metals
-
sodium (1)
-
-
alkaline earth metals
-
calcium (1)
-
magnesium (1)
-
-
-
metamorphism (1)
-
mineral exploration (1)
-
mineralogy (2)
-
minerals (3)
-
North America
-
Appalachians (1)
-
Great Plains (1)
-
Keweenawan Rift (1)
-
Rocky Mountains
-
Southern Rocky Mountains (1)
-
U. S. Rocky Mountains
-
Absaroka Range (1)
-
Uinta Mountains (3)
-
Wasatch Range (1)
-
-
-
Western Interior
-
Western Interior Seaway (1)
-
-
Western Overthrust Belt (1)
-
Williston Basin (2)
-
-
oil and gas fields (12)
-
orogeny (3)
-
oxygen
-
O-18/O-16 (5)
-
-
paleoclimatology (5)
-
paleoecology (1)
-
paleogeography (7)
-
paleomagnetism (1)
-
paleontology (4)
-
Paleozoic
-
Cambrian (2)
-
Carboniferous
-
Mississippian (1)
-
Pennsylvanian
-
Middle Pennsylvanian
-
Paradox Formation (1)
-
-
-
-
Devonian (2)
-
Minnelusa Formation (1)
-
Permian (1)
-
-
paragenesis (3)
-
petroleum
-
natural gas
-
coalbed methane (2)
-
-
shale oil (1)
-
-
petrology (6)
-
Plantae (1)
-
Precambrian
-
Archean (1)
-
Uinta Mountain Group (2)
-
upper Precambrian
-
Proterozoic (1)
-
-
-
reefs (1)
-
reservoirs (1)
-
rock mechanics (1)
-
sea-level changes (5)
-
sedimentary petrology (19)
-
sedimentary rocks
-
carbonate rocks
-
grainstone (1)
-
limestone
-
microbialite (1)
-
-
packstone (1)
-
rudstone (1)
-
wackestone (1)
-
-
chemically precipitated rocks
-
evaporites (1)
-
-
clastic rocks
-
bentonite (1)
-
black shale (4)
-
conglomerate (5)
-
marl (3)
-
mudstone (5)
-
red beds (2)
-
sandstone (29)
-
shale (8)
-
siltstone (5)
-
-
coal (2)
-
gas sands (1)
-
oil sands (5)
-
oil shale (14)
-
-
sedimentary structures
-
bedding plane irregularities
-
mudcracks (1)
-
-
biogenic structures
-
lebensspuren (1)
-
microbial mats (1)
-
stromatolites (1)
-
thrombolites (1)
-
-
current markings (2)
-
planar bedding structures
-
cross-bedding (2)
-
laminations (1)
-
sand bodies (1)
-
varves (1)
-
-
-
sedimentation (19)
-
sediments
-
clastic sediments
-
sand (1)
-
-
-
seismology (1)
-
shorelines (1)
-
South America
-
Andes
-
Eastern Cordillera (1)
-
-
Argentina
-
Neuquen Basin (2)
-
-
Brazil
-
Sergipe-Alagoas Basin (1)
-
-
Colombia (1)
-
-
stratigraphy (8)
-
structural geology (8)
-
sulfur
-
S-34/S-32 (1)
-
-
tectonics (10)
-
United States
-
Absaroka Fault (1)
-
Arizona (3)
-
Bighorn Basin (4)
-
Black Warrior Basin (1)
-
Book Cliffs (4)
-
California
-
Southern California (1)
-
-
Central Basin Platform (1)
-
Colorado
-
Garfield County Colorado (1)
-
Piceance Basin (5)
-
Rio Blanco County Colorado (2)
-
-
Colorado Plateau (5)
-
Delaware Basin (1)
-
Denver Basin (2)
-
Eastern U.S. (1)
-
Four Corners (4)
-
Kentucky
-
Rough Creek fault zone (1)
-
-
Midcontinent (1)
-
Mojave Desert (1)
-
Mullen Creek-Nash Fork shear zone (1)
-
Nevada
-
Nye County Nevada (1)
-
-
New Mexico (7)
-
North Dakota (1)
-
Paradox Basin (9)
-
Powder River basin (7)
-
Reelfoot Rift (1)
-
Sevier orogenic belt (1)
-
Southern Oklahoma Aulacogen (1)
-
U. S. Rocky Mountains
-
Absaroka Range (1)
-
Uinta Mountains (3)
-
Wasatch Range (1)
-
-
Uinta Basin (128)
-
Uncompahgre Uplift (1)
-
Utah
-
Carbon County Utah (3)
-
Daggett County Utah (1)
-
Duchesne County Utah (10)
-
Emery County Utah
-
Emery Utah (1)
-
-
Grand County Utah (2)
-
Henry Mountains (1)
-
Kaiparowits Plateau (2)
-
Uintah County Utah (14)
-
Wasatch County Utah (1)
-
Wasatch Plateau (1)
-
-
Washakie Basin (3)
-
Western U.S. (7)
-
Wyoming
-
Campbell County Wyoming (1)
-
Carbon County Wyoming
-
Shirley Basin (1)
-
-
Hanna Basin (2)
-
Johnson County Wyoming (1)
-
Natrona County Wyoming (1)
-
Sheridan County Wyoming (1)
-
-
-
well-logging (2)
-
-
rock formations
-
Fort Union Formation (1)
-
North Horn Formation (1)
-
-
sedimentary rocks
-
sedimentary rocks
-
carbonate rocks
-
grainstone (1)
-
limestone
-
microbialite (1)
-
-
packstone (1)
-
rudstone (1)
-
wackestone (1)
-
-
chemically precipitated rocks
-
evaporites (1)
-
-
clastic rocks
-
bentonite (1)
-
black shale (4)
-
conglomerate (5)
-
marl (3)
-
mudstone (5)
-
red beds (2)
-
sandstone (29)
-
shale (8)
-
siltstone (5)
-
-
coal (2)
-
gas sands (1)
-
oil sands (5)
-
oil shale (14)
-
-
siliciclastics (1)
-
volcaniclastics (1)
-
-
sedimentary structures
-
burrows (1)
-
channels (2)
-
sedimentary structures
-
bedding plane irregularities
-
mudcracks (1)
-
-
biogenic structures
-
lebensspuren (1)
-
microbial mats (1)
-
stromatolites (1)
-
thrombolites (1)
-
-
current markings (2)
-
planar bedding structures
-
cross-bedding (2)
-
laminations (1)
-
sand bodies (1)
-
varves (1)
-
-
-
-
sediments
-
sediments
-
clastic sediments
-
sand (1)
-
-
-
siliciclastics (1)
-
volcaniclastics (1)
-
-
soils
-
paleosols (1)
-
GeoRef Categories
Era and Period
Epoch and Age
Book Series
Date
Availability
Uinta Basin
Dolomite mineralogy as a proxy record for lake level fluctuations: a case study from the Eocene Uteland Butte Member of the Green River Formation, Uinta Basin, Utah, U.S.A.
Anatomy of a fluvial paleo-fan: sedimentological and architectural trends of the Paleocene–Eocene Wasatch–Colton System (western Uinta Basin, Utah, U.S.A.)
Estimating additional resistivity by permeability in brine-saturated sandstones
Environmental and microbial influence on chemistry and dolomite formation in an ancient lake, Green River Formation (Eocene), Uinta basin, Utah, U.S.A.
A Comparison of Geological Characteristics of the Main Continental Shale Oil in China and the U.S.
ABSTRACT The Uinta Basin of eastern Utah is an intermontane basin that contains an ~2-km-thick succession of mostly carbonate-rich mudrock assigned to the Eocene Green River Formation. In the southwest part of the basin, along Nine Mile Canyon and its tributary canyons, the middle member of the Green River Formation contains numerous interbedded sand bodies. Previous researchers have interpreted these sand bodies variably as lacustrine deltaic mouth bars, terminal fluvial distributary bars, and various types of fluvial (delta plain/floodplain/braid plain) bar. Using some modern western U.S. lakes as partial analogues, and taking into account the overall lacustrine basin context of a widely fluctuating, wave-influenced, alkaline-lake shoreline, we again interpret many of the sand bodies to be fluvial in origin. Several sand bodies both truncate and are capped by brown to red-maroon and variegated weak to noncalcareous mudstone with root and desiccation structures, indicating terrestrial deposition well away from the lake shoreline. Others display steep cutbanks from which noncalcareous, inclined heterolithic stratification laterally accreted as fluvial side bars. Utilizing helicopter-based light detection and ranging (LiDAR) data, we investigated additional sand bodies that may be better examples of deltaic mouth bars. In contrast to the more commonly documented highstand progradational mouth bars of marine and open lake settings, these sand bodies are interpreted to have originated as late-lowstand or transgressive system tract fluvial channels that were then flooded and modified by waves following lake transgression. These examples illustrate that any large-scale sandy bed form present in the general vicinity of a closed basin’s fluctuating lake shore may be expected to have formed under more than one set of environmental conditions. A revised set of guidelines is therefore presented to aid in the interpretation of lacustrine deltaic mouth bars.
Depositional system and lake-stage control on microbialite morphology, Green River Formation, eastern Uinta Basin, Colorado and Utah, U.S.A.
Source rocks in foreland basins: A preferential context for the development of natural hydraulic fractures
Lacustrine cyclicity in the early Eocene Green River Formation, Uinta Basin, Utah: Evidence from X-ray fluorescence core scanning
Pore-Scale Imaging of Solid Bitumens: Insights for Unconventional Reservoir Characterization
ABSTRACT Characterizing unconventional reservoirs involves the investigation of a wide range of potential source-rock targets at various stages of thermal maturity. These samples may contain a mixture of kerogen, bitumen, oil, and pyrobitumen within their fabric. Thus, it is critical that we properly identify and examine each organic phase to better understand reservoir properties. In the present study, we have selected samples of gilsonite from a naturally occurring solid hydrocarbon deposit to serve as an analog for characterizing the bitumen phase of generation. Gilsonite is an aromatic-asphaltic solid bitumen found in vertical veins along the eastern portion of the Uinta Basin, Utah. It is thought to be an early generation product from oil-prone Green River Shale source beds and is similar to low-maturity crude oil in composition. It has a high nitrogen content, low sulfur content, and high melting point (fusibility) and is soluble in organic solvents. We have used a variety of analytic methods to characterize this material, including standard optical organic petrology and scanning electron microscopic imaging to examine the occurrence of organic porosity. Optical organic petrology analyses using both air and oil immersion objectives show that the polished gilsonite surfaces are typically dark grey and featureless. Optical evidence for the presence of macerals and inorganic constituents is absent. Visual estimates suggest that fractures make up approximately 1% of the conchoidal fracture plane, whereas the pencillated variety contains approximately 2% fractures along with 5% shallow pits. Scanning electron microscopic images also show the occurrence of fractures within gilsonite, but the matrix contains no evident organic porosity. The results of our analyses suggest that, unlike pyrobitumen, pre-oil solid bitumen represented by gilsonite was found to contain no significant occurrences of organic nanoporosity within its matrix. Gilsonite does have minor pitting and fractures, but these do not represent an effective interconnected pore network and are probably artifacts of weathering/sampling. Thus, this material would not represent a potential candidate for in-situ petroleum storage capacity. Whether this is typical of all naturally occurring solid bitumen is debatable, considering that gilsonite has undergone some secondary alteration via devolatilization and limited biodegradation. Nevertheless, the pore-scale imaging of this solid bitumen provides potentially important new insights for unconventional reservoir characterization.
Climate impact on fluvial-lake system evolution, Eocene Green River Formation, Uinta Basin, Utah, USA
HIGHLY SEASONAL AND PERENNIAL FLUVIAL FACIES: IMPLICATIONS FOR CLIMATIC CONTROL ON THE DOUGLAS CREEK AND PARACHUTE CREEK MEMBERS, GREEN RIVER FORMATION, SOUTHEASTERN UINTA BASIN, UTAH, U.S.A.
Geologically constrained electrofacies classification of fluvial deposits: An example from the Cretaceous Mesaverde Group, Uinta and Piceance Basins
Regional Controls On Depositional Trends In Tidally Modified Deltas: Insights From Sequence Stratigraphic Correlation and Mapping of the Loyd And Sego Sandstones, Uinta And Piceance Basins of Utah and Colorado, U.S.A.
Origin of heavy oil in Cretaceous petroleum reservoirs
Evidence for a petroleum subsystem in the Frontier Formation of the Uinta–Piceance Basin petroleum province
The Offshore Bar Revisited: A New Depositional Model For Isolated Shallow Marine Sandstones In the Cretaceous Frontier Formation of the Northern Uinta Basin, Utah, U.S.A.
Abstract Reservoir rocks can be highly sensitive to fluids introduced through hydraulic fracturing, water disposal, or waterflood injection. The sensitivity of reservoir rocks to fluids can lead to reduced permeability and permanent formation damage resulting in reduced productivity or injectivity. It is generally assumed that clays are the primary culprit in formation damage caused by swelling, increased clay-bound water, water shock, or denigration. In this chapter, we present results from a two-year effort to understand the fluid sensitivity of tight sandstone reservoirs in the Greater Monument Butte Unit (GMBU) in the Uinta Basin, Utah, U.S.A. Newfield Exploration (NFX) drills and completes approximately 200 wells per year in the field, which is currently under waterflood with injection rates of ~90,000 barrels per day. When we initiated this study, NFX completed wells with fresh water. Pore-scale imaging was the key to designing new core flood experiments that led to optimized completions fluids for the field. Initially, we assumed that potential fluid sensitivity was caused by mixed-layer illite-smectite (I/S). XRD (x-ray diffraction) and SEM (scanning electron microscope) images indicated that some GMBU reservoir rocks contained pore-bridging I/S. We designed initial core flood experiments combined with core nuclear magnetic resonance to identify and quantify clay reactions. The results of these initial tests indicated that the reservoirs were sensitive to lower-salinity completions fluids and a reduction in permeability was observed. We utilized a new approach involving pore-scale imaging to identify the mechanism causing permeability reduction. Comparison of SEM images of minerals in pores before and after fluid placement identified calcite dissolution and fines migration as the cause of permeability reduction. Micro-CT (micro-computed tomography) scans combined with registered EDX (energy-dispersive x-ray spectroscopy) mineralogy provided the context for the severity of the problem, especially in the better reservoir rock. The results of this work challenge a number of commonly held assumptions of rock–fluid sensitivity and have implications on how to design effective fluid sensitivity studies using core. This work involved collaboration between petrophysicists, geologists, engineers, and facilities personnel to design and implement a completions fluid that does not damage multiple reservoirs while remaining cost effective and efficient. This work demonstrates the value of focused science within the context of cost and field operational constraints.