Document Type
Article
Department or Administrative Unit
Geological Sciences
Publication Date
2-10-2001
Abstract
Global Positioning System (GPS) results from networks spanning the Eastern California shear zone and adjacent Sierra Nevada block, occupied annually between 1993 and 1998, constrain plate margin kinematics. We use an elastic block model to relate GPS station velocities to long‐term fault slip rate estimates. The model accounts for elastic strain accumulation on the San Andreas fault, as well as faults of the Eastern California shear zone. South of the Garlock fault, 14 mm/yr of dextral shear is distributed across the Eastern California shear zone. Some of this slip penetrates eastward into the Basin and Range, and a collective budget of 13 mm/yr is observed to the north at the latitude of Owens Lake. Model slip rates for two important faults, the Garlock and Owens Valley faults, significantly misfit geologic estimates. By referencing station velocities to stable North America we observe northward‐increasing deformation east of our regional GPS network. At the latitude of Mojave Desert, however, some of this deformation is ascribed to elastic strain accumulation due to a locked San Andreas fault and thus does not represent additional fault‐related, permanent deformation.
Recommended Citation
Miller, M. Meghan; Dixon, Timothy H.; and Dokka, Roy K., "Refined kinematics of the Eastern California shear zone from GPS observations, 1993-1998" (2001). All Faculty Scholarship for the College of the Sciences. 285.
https://digitalcommons.cwu.edu/cotsfac/285
Journal
Journal of Geophysical Research: Solid Earth
Rights
Copyright 2000 by the American Geophysical Union.
Included in
Geology Commons, Geomorphology Commons, Geophysics and Seismology Commons, Tectonics and Structure Commons
Comments
This article was originally published in Journal of Geophysical Research: Solid Earth. The full-text article from the publisher can be found here.