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The Beaver Creek Detachment System: Syn-Laramide Gravity Detachment and Folding Oblique to Regional Compression

By
Sara Smaltz
Sara Smaltz
Encana Oil & Gas (USA) Inc., 370 17th St., Suite 1700, Denver, Colorado, 80202, U.S.A. (e-mail: sara.smaltz@encana.com)
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Eric Erslev
Eric Erslev
Department of Geology and Geophysics, University of Wyoming, 1000 E. University Ave., Laramie, Wyoming, 82071, U.S.A. (e-mail: erslev@warnercnr.colostate.edu)
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Published:
January 01, 2013

Abstract

Detachment folds basinward of Laramide Rocky Mountain arches are relatively poorly known, partially due to coverage by synorogenic strata that may conceal undiscovered anticlinal fields. This study documents the geometry and kinematics of the Beaver Creek Detachment system (BCD), which is located west of a series of NW-trending thrust faults and folds defining the Beaver Creek reentrant on the western edge of the Bighorn Arch. Possible origins for this proposed detachment include syn-Laramide detachment rooted in mountain-front faulting, syn-Laramide gravity slinding during mountain-front folding, and post-Laramide gravity sliding.

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Contents

AAPG Studies in Geology

Application of Structural Methods to Rocky Mountain Hydrocarbon Exploration and Development

Constance N. Knight
Constance N. Knight
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Jerome J. Cuzella
Jerome J. Cuzella
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Leland D. Cress
Leland D. Cress
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American Association of Petroleum Geologists
Volume
65
ISBN electronic:
9781629812632
Publication date:
January 01, 2013

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