Sedimentology and provenance of Late Cretaceous(. )-Eocene Sheep Pass Formation conglomerates in hinterland of Sevier Orogenic Belt, east-central Nevada
Conference
·
· Am. Assoc. Pet. Geol., Bull.; (United States)
OSTI ID:7230438
The Late Cretaceous(.)-Eocene Sheep Pass Formation of east-central Nevada is a thick (1500-m) sequence of nonmarine conglomerate, sandstone, mud rock, and limestone. Detailed stratigraphic analyses of the basal conglomerate (50 to 450 m thick) in the Egan, Pancake, and Fish Creek ranges was performed. The presence of large (up to 400 m) Paleozoic limestone slide blocks and paucity of sandstone lithofacies within conglomeratic sequences in the Egan Range suggest deposition on the proximal to medial portion of streamflow-dominated alluvial fans. Clast imbrication measurements document east-northeast to west-southwest paleoflow directions throughout the region. In the Egan and Pancake Ranges, gravel is comprised predominantly of Pennsylvanian-Permian carbonate and Mississippian quartzarenite (Scotty Wash). Gravels in the Fish Creek Range consist of paleozoic dolomite and Ordovician quartzarenite (Eureka) at the base of the Sheep Pass, and Paleozoic limestone and dolomite, Mississippian quartzarenite, and Ordovician quartzarenite near the top. Preliminary interpretations of our data indicate that Late Cretaceous-early Tertiary sedimentation in the hinterland of the Sevier orogenic belt occurred in a series of small basins characterized by general westward sediment dispersal patterns. Further interpretations of hinterland basin development and structural setting of basin-bounding uplifts await further work on Cretaceous-Eocene strata now in progress.
- Research Organization:
- Montana State Univ., Bozeman
- OSTI ID:
- 7230438
- Report Number(s):
- CONF-8609129-
- Conference Information:
- Journal Name: Am. Assoc. Pet. Geol., Bull.; (United States) Journal Volume: 70:8
- Country of Publication:
- United States
- Language:
- English
Similar Records
Paleogeographic and paleotectonic setting of sedimentary basins in the Sevier thrust belt and hinterland, eastern Great Basin
Cretaceous to early Tertiary paleogeography in the hinterland of the Sevier thrust belt, east-central Nevada
Demarcation of a Late Cretaceous(. ) thrust belt near Railroad Valley and Pine Valley in east-central Nevada
Conference
·
Wed Mar 31 23:00:00 EST 1993
· Geological Society of America, Abstracts with Programs; (United States)
·
OSTI ID:5021808
Cretaceous to early Tertiary paleogeography in the hinterland of the Sevier thrust belt, east-central Nevada
Journal Article
·
Fri Jun 01 00:00:00 EDT 1990
· Geology; (USA)
·
OSTI ID:6314420
Demarcation of a Late Cretaceous(. ) thrust belt near Railroad Valley and Pine Valley in east-central Nevada
Conference
·
Fri Aug 01 00:00:00 EDT 1986
· Am. Assoc. Pet. Geol., Bull.; (United States)
·
OSTI ID:7230214
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02 PETROLEUM
020200* -- Petroleum-- Reserves
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& Exploration
CENOZOIC ERA
CONGLOMERATES
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GEOLOGIC FORMATIONS
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USA
020200* -- Petroleum-- Reserves
Geology
& Exploration
CENOZOIC ERA
CONGLOMERATES
CRETACEOUS PERIOD
FEDERAL REGION IX
GEOLOGIC AGES
GEOLOGIC FORMATIONS
GEOLOGIC STRUCTURES
GEOLOGY
MESOZOIC ERA
NEVADA
NORTH AMERICA
RESERVOIR ROCK
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SANDSTONES
SEDIMENTARY BASINS
SEDIMENTARY ROCKS
STRATIGRAPHY
TERTIARY PERIOD
USA