Late Quaternary deformation and seismic risk in the northern Sierra Nevada-Great Basin boundary zone near the Sweetwater Mountains, California and Nevada
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Authors
Hayes, Garry F.
Issue Date
1985
Type
Thesis
Language
en_US
Keywords
seismology , geology , tectonics , earthquakes , remote sensing , geophysics , Sweetwater Mountains , Sierra Nevada , Great Basin , Owens Valley , stratigraphy , tectonic history , fault scarps , faults , Antelope Valley , Slinkard fault system , North Antelope Valley , Lost Cannon Creek , Walker River Gorge , Sonora Basin , Bridgeport Valley , Mackay Science Project
Alternative Title
Abstract
Remote-sensing, seismic and field studies indicate three major zones of Quaternary deformation near the Sweetwater Mountains. Holocene fault scarps are present in the Antelope, Little Antelope, Smith and Bridgeport Valleys, and in the Sonora Basin. Two other vaguely defined zones, between Carson and Antelope valleys, and from the Bridgeport Valley east to Bald Mountain, may represent Mio-Pliocene zones of faulting which more recently have acted as conjugate shears releasing stress between fault basins in the Western Great Basin between the Sierra Nevada and Walker Lane shear zone. The northern portion of the Sierra Nevada-Great Basin Boundary Zone is less active than the southern part in Owens Valley, as shown by lower slip rates, shorter fault lengths and lower levels of historical seismicity. Maximum Credible Earthquake magnitudes for the fault basins range from 6.3 to 7.2, with expected displacements of 3 meters or more.
Description
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Citation
Publisher
University of Nevada, Reno
License
In Copyright(All Rights Reserved)