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Sawtooth segmentation and deformation processes on the southern San Andreas fault, CaliforniaFive contiguous 12-13 km fault segments form a sawtooth geometry on the southernmost San Andreas fault. The kinematic and morphologic properties of each segment depend on fault strike, despite differences of strike between segments of as little as 3 degrees. Oblique slip (transpression) of fault segments within the Indio Hills, Mecca Hills and Durmid Hill results from an inferred 8:1 ratio of dextral slip to convergence across the fault zone. Triggered slip and creep are confined almost entirely to transpressive segments of the fault. Durmid Hill has been formed in the last 28 + or - 6 ka by uplift at an average rate of 3 + or - 1 mm/a.
Document ID
19850067778
Document Type
Reprint (Version printed in journal)
Authors
Bilham, R. (Lamont-Doherty Geological Observatory Palisades, NY, United States)
Williams, P. (Lamont Doherty Geological Observatory Palisades, NY, United States)
Date Acquired
August 12, 2013
Publication Date
September 1, 1985
Publication Information
Publication: Geophysical Research Letters
Volume: 12
ISSN: 0094-8276
Subject Category
GEOPHYSICS
Funding Number(s)
CONTRACT_GRANT: USGS-21918
CONTRACT_GRANT: NAS5-27237
CONTRACT_GRANT: USGS-21296
Distribution Limits
Public
Copyright
Other