Style and timing of frontal structures, thrust belt, Central Utah

Journal Article · Mon Jul 01 04:00:00 EDT 1985 · AAPG Bull. (See CODEN: AAPGB); (United States)

OSTI ID:6287326

Lawton, T F

The Cordilleran fold and thrust belt in central Utah may be divided into a western belt of Precambrian to lower Mesozoic strata shortened above ramp-style thrust faults and an eastern belt of folded middle to upper Mesozoic rocks. Shortening in the eastern foldbelt occurred above a bedding-plane thrust fault system that terminates within a thick section of Jurassic shale, siltstone, and anhydrite. Demonstrable synthrusting deposits within the region are late Early to Late Cretaceous in age. The age of synorogenic deposits and structural relations of postorogenic strata indicate that deformation was complete by the close of the Cretaceous or early Paleocene, and support a thrust mechanism for much of the folding in the region.

• Research Organization: Laboratory of Geotectonics, Department of Geosciences, University of Arizona, Tucson, Arizona
• OSTI ID: 6287326
• Journal Information: AAPG Bull. (See CODEN: AAPGB); (United States), Journal Name: AAPG Bull. (See CODEN: AAPGB); (United States) Vol. 69:7; ISSN AABUD
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
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03 NATURAL GAS
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Geology
& Exploration
CENOZOIC ERA
FEDERAL REGION VIII
GEOLOGIC AGES
GEOLOGIC DEPOSITS
GEOLOGIC FAULTS
GEOLOGIC FRACTURES
GEOLOGIC HISTORY
GEOLOGIC STRUCTURES
MESOZOIC ERA
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
PETROLEUM DEPOSITS
RESOURCES
TECTONICS
TERTIARY PERIOD
USA
UTAH