San Andrea Fault

Plane Views Over California

The San Andreas Fault is an 810-mile-long fault that marks part of the boundary between the Pacific tectonic plate and the North American plate. The San Andreas Fault and accompanying faults can trigger major earthquake; it was responsible for the 1906 San Francisco earthquake.

The part of the fault from San Francisco southward is located generally under land, where several fault-related features are readily visible from land and air. To the north of San Francisco, the fault roughly follows the coast, and is underwater at several locations.


over california san andreas fault carrizo plain

San Andreas Fault at Carrizo Plain (L13A0043)
Carrizo Plain, located in San Luis Obispo County, is the largest native grassland remaining in California, and is one of the best places to see surface fractures associated with the San Andreas Fault.


over california san andreas fault carrizo plain

San Andreas Fault at Carrizo Plain (L13A0044)


over california san andreas fault palmdale

San Andreas Fault at Palmdale (S11A0964)
The San Andreas Fault passes along the southwest side of Palmdale and Lancaster (upper right) in Antelope Valley. Lake Elizabeth (lower center left in the picture) lies right on the fault.


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