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Shallow structure and deformation along the San Andreas Fault in Cholame Valley, California, based on high-resolution reflection profiling

Journal of Geophysical Research

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Abstract

The mapped active traces of the San Andreas fault are separated by a 1-km-wide right-stepping offset in Cholame Valley. The geometry of this offset, defined in other strike-slip systems as a releasing bend or a dilational jog, has resulted in the formation of a pull-apart basin. Various researchers have inferred that this offset served as a rupture terminus for earthquakes on both strands of the San Andreas fault (1966 Parkfield and 1857 Fort Tejon); thus, this en echelon offset may represent a barrier to the propagation of rupture between two segments of the San Andreas fault. We collected 18 km of high-resolution seismic reflection data specifically designed to image the San Andreas fault zone in the shallow crust surrounding this offset. -from Authors

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Shallow structure and deformation along the San Andreas Fault in Cholame Valley, California, based on high-resolution reflection profiling
Series title:
Journal of Geophysical Research
Volume
95
Issue:
B4
Year Published:
1990
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Geophysical Research
First page:
5003
Last page:
5020
Number of Pages:
18