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Strain accumulation across the Eastern California Shear Zone at latitude 36°30'N

Journal of Geophysical Research B: Solid Earth

By:
, , , and
DOI: 10.1029/2000JB900105

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Abstract

The motion of a linear array of monuments extending across the Eastern California Shear Zone (ECSZ) has been measured from 1994 to 1999 with the Global Positioning System. The linear array is oriented N54°E, perpendicular to the tangent to the local small circle drawn about the Pacific-North America pole of rotation, and the observed motion across the ECSZ is approximated by differential rotation about that pole. The observations suggest uniform deformation within the ECSZ (strike N23°W) (26 nstrain yr−1 extension normal to the zone and 39 nstrain yr−1 simple right-lateral shear across it) with no significant deformation in the two blocks (the Sierra Nevada mountains and southern Nevada) on either side. The deformation may be imposed by right-lateral slip at depth on the individual major fault systems within the zone if the slip rates are: Death Valley-Furnace Creek fault 3.2±0.9 mm yr−1, Hunter Mountain-Panamint Valley fault 3.3±1.6 mm yr−1, and Owens Valley fault 6.9±1.6 mm yr−1. However, this estimate of the slip rate on the Owens Valley fault is 3 times greater than the geologic estimate.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Strain accumulation across the Eastern California Shear Zone at latitude 36°30'N
Series title:
Journal of Geophysical Research B: Solid Earth
DOI:
10.1029/2000JB900105
Volume
105
Issue:
B7
Year Published:
2000
Language:
English
Publisher:
AGU Publications
Description:
8 p.
First page:
16229
Last page:
16236
Online Only (Y/N):
N
Additional Online Files(Y/N):
N