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Quaternary low-angle slip on detachment faults in Death Valley, California

Nicholas W. Hayman, Jeffrey R. Knott, Darrel S. Cowan, Eliza S. Nemser and Andrei M. Sarna-Wojcicki
Quaternary low-angle slip on detachment faults in Death Valley, California
Geology (Boulder) (April 2003) 31 (4): 343-346


Detachment faults on the west flank of the Black Mountains (Nevada and California) dip 29 degrees -36 degrees and cut subhorizontal layers of the 0.77 Ma Bishop ash. Steeply dipping normal faults confined to the hanging walls of the detachments offset layers of the 0.64 Ma Lava Creek B tephra and the base of 0.12-0.18 Ma Lake Manly gravel. These faults sole into and do not cut the low-angle detachments. Therefore the detachments accrued any measurable slip across the kinematically linked hanging-wall faults. An analysis of the orientations of hundreds of the hanging-wall faults shows that extension occurred at modest slip rates (<1 mm/yr) under a steep to vertically oriented maximum principal stress. The Black Mountain detachments are appropriately described as the basal detachments of near-critical Coulomb wedges. We infer that the formation of late Pleistocene and Holocene range-front fault scarps accompanied seismogenic slip on the detachments.

ISSN: 0091-7613
EISSN: 1943-2682
Serial Title: Geology (Boulder)
Serial Volume: 31
Serial Issue: 4
Title: Quaternary low-angle slip on detachment faults in Death Valley, California
Affiliation: University of Washington, Department of Earth and Space Sciences, Seattle, WA, United States
Pages: 343-346
Published: 200304
Text Language: English
Publisher: Geological Society of America (GSA), Boulder, CO, United States
References: 28
Accession Number: 2003-032331
Categories: Quaternary geologyStructural geology
Document Type: Serial
Bibliographic Level: Analytic
Annotation: With GSA Data Repository Item 2003041
Illustration Description: illus. incl. sect., sketch map
N35°49'60" - N36°19'60", W116°49'60" - W116°34'60"
Secondary Affiliation: California State University at Fullerton, USA, United StatesU. S. Geological Survey, USA, United States
Country of Publication: United States
Secondary Affiliation: GeoRef, Copyright 2017, American Geosciences Institute. Reference includes data supplied by the Geological Society of America, Boulder, CO, United States
Update Code: 200311
Program Name: USGSOPNon-USGS publications with USGS authors
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