Thermochronology of the Idaho-Wyoming Thrust Belt During the Sevier Orogeny: A New, Calibrated, Multiprocess Thermal Model

Burtner, Roger L.; Nigrini, Andrew

doi:10.1306/a25ff229-171b-11d7-8645000102c1865d

Cited by 10 publications

(2 citation statements)

References 34 publications

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“…The black shales in the Meade Peak (fig. 9) are thermally mature in much of western Wyoming and southeastern Idaho (Burtner and Nigrini, 1994;Roberts and others, 2004), however, shales in the Retort Member are immature in western Montana (Claypool and others, 1978). Phosphoria black shales in the western part of the Wind River Basin, although thermally mature (fig.…”

Section: Maturation and Migrationmentioning

confidence: 99%

“…The timing of generation and migration of Phosphoria oil from the Idaho-Wyoming border has been proposed to be prior to Laramide deformation (Cheney and Sheldon, 1959;Sheldon, 1967;Stone, 1967;Maughan, 1976;Claypool and others, 1978). More recently, the Phosphoria is thought to have generated petroleum from the Idaho/Wyoming thrust belt and Green River Basin, perhaps continuously, through a series of successive events associated with the movement of fluids in advance of a sequence of eastward-moving thrust sheets during the Sevier orogeny (Burtner and Nigrini, 1994). Maughan (1984) showed multiple pathways into the Wind River Basin from the thrust belt and even from the northern margin of the basin.…”

Section: Maturation and Migrationmentioning

confidence: 99%

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Chapter 3: Geologic Assessment of Undiscovered Oil and Gas Resources in the Phosphoria Total Petroleum System of the Wind River Basin Province, Wyoming

Kirschbaum¹,

Lillis²,

Roberts³

2007

Data Series

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The Phosphoria Total Petroleum System (TPS) encompasses the entire Wind River Basin Province, an area of 4.7 million acres in central Wyoming. The source rocks most likely are black, organic-rich shales of the Meade Peak and Retort Phosphatic Shale Members of the Permian Phosphoria Formation located in the Wyoming and Idaho thrust belt to the west and southwest of the province. Petroleum was generated and expelled during Jurassic and Cretaceous time in westernmost Wyoming and is interpreted to have migrated into the province through carrier beds of the Pennsylvanian Tensleep Sandstone where it was preserved in hypothesized regional stratigraphic traps in the Tensleep and Permian Park City Formation. Secondary migration occurred during the development of structural traps associated with the Laramide orogeny. The main reservoirs are in the Tensleep Sandstone and Park City Formation and minor reservoirs are in the Mississippian Madison Limestone, Mississippian-Pennsylvanian Amsden Formation, Triassic Chugwater Group, and Jurassic Nugget Sandstone and Sundance Formation. The traps are sealed by shale or evaporite beds of the Park City, Amsden, and Triassic Dinwoody Formations, Triassic Chugwater Group, and Jurassic Gypsum Spring Formation.A single conventional oil and gas assessment unit (AU), the Tensleep-Park City AU, was defined for the Phosphoria TPS. Both the AU and TPS cover the entire Wind River Basin Province. Oil is produced from 18 anticlinal fields, the last of which was discovered in 1957, and the possibility of discovering new structural oil accumulations is considered to be relatively low. Nonassociated gas is produced from only two fields, but may be underexplored in the province. The discovery of new gas is more promising, but will be from deep structures. The bulk of new oil and gas accumulations is dependent on the discovery of hypothesized stratigraphic traps in isolated carbonate reservoirs of the Park City Formation. Mean resource estimates for the Tensleep-Park City Conventional Oil and Gas AU total 18 million barrels of oil, 294 billion cubic feet of gas, and 5.9 million barrels of natural gas liquids.

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Section: Maturation and Migrationmentioning

confidence: 99%

Section: Maturation and Migrationmentioning

confidence: 99%

Chapter 3: Geologic Assessment of Undiscovered Oil and Gas Resources in the Phosphoria Total Petroleum System of the Wind River Basin Province, Wyoming

Kirschbaum¹,

Lillis²,

Roberts³

2007

Data Series

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Three-dimensional (3-D) finite strain at the central Andean orocline and implications for grain-scale shortening in orogens

Eichelberger

McQuarrie

2014

Geological Society of America Bulletin

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Exhumation of the North American Cordillera revealed by multi-dating of Upper Jurassic–Upper Cretaceous foreland basin deposits

Painter

Carrapa

DeCelles

et al. 2014

Geological Society of America Bulletin

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New low-temperature thermochronology and geochronology data from Upper Jurassic-Upper Cretaceous strata from the North American Cordilleran foreland basin in Utah, Colorado, Wyoming, and South Dakota document rapid exhumation rates of the adjacent Cordilleran orogenic belt to the west. Both zircon (U-Th-[Sm])/He (zircon He) and apatite fi ssion track (AFT) thermochronology were applied to proximal and distal synorogenic deposits in order to identify a thermochronometer suitable to record source exhumation during the North America Cordilleran orogeny. AFT lag times from Upper Jurassic-Upper Cretaceous deposits are 0-5 m.y. and indicate a relatively steadystate to slightly increasing exhumation rate between 118 Ma and 66 Ma. These lag-time measurements are consistent with active shortening and rapid exhumation rates of ~0.9->1 km/m.y. of the North American Cordillera throughout the Cretaceous.Double dating of the detrital AFT samples was performed on apatites with young AFT cooling ages, in order to test whether or not the young cooling ages represent a signal related to exhumation rather than volcanic activity. Maximum depositional ages using detrital zircon U-Pb geochronology match existing ages on basin stratigraphy. This study indicates that AFT is the most effective thermochronometer to resolve source exhumation from Lower to Upper Cretaceous foreland stratigraphy in the central Cor dilleran foreland, and indicates that source material was exhumed from 4 to 5 km depths but was never buried more than a few kilometers (<4 km) since Cretaceous time. Zircon He dates indicate that the orogenic hinter land could not have been exhumed from depths >8-9 km. Double dating of apatites (with AFT and U-Pb) shows that volcanic contamination is a signifi cant issue that can, however, be addressed by double dating.

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Thermochronology of the Idaho-Wyoming Thrust Belt During the Sevier Orogeny: A New, Calibrated, Multiprocess Thermal Model

Cited by 10 publications

References 34 publications

Chapter 3: Geologic Assessment of Undiscovered Oil and Gas Resources in the Phosphoria Total Petroleum System of the Wind River Basin Province, Wyoming

Chapter 3: Geologic Assessment of Undiscovered Oil and Gas Resources in the Phosphoria Total Petroleum System of the Wind River Basin Province, Wyoming

Three-dimensional (3-D) finite strain at the central Andean orocline and implications for grain-scale shortening in orogens

Exhumation of the North American Cordillera revealed by multi-dating of Upper Jurassic–Upper Cretaceous foreland basin deposits

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