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Aseismic uplift in Southern California

Science

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Abstract

Preliminary examination of the historic geodetic record has disclosed crustal uplift of 0.15 to 0.25 meter that apparently began around 1960 and has since grown to include at least 12,000 square kilometers of southern California. This uplift extends at least ISO kilometers west-northwestward along the San Andreas Fault from Cajon to Maricopa, southward from the San Andreas into the northern Transverse Ranges, and eastward from Lebec into and including much of the western Mojave block. It seems to have grown spasmodically eastward from a center near the junction of the San Andreas and Garlock faults and has occurred largely within an area that has remained virtually aseismic since at least 1932. Although much of this area has been characterized by crustal mobility since at least the turn of the century, the described uplift seems to be an Uhusually large and probably unique event superimposed on the existing pattern of continuing deformation.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Aseismic uplift in Southern California
Series title:
Science
Volume
192
Issue:
4236
Year Published:
1976
Language:
English
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Science
First page:
251
Last page:
253
Number of Pages:
3