The San Andreas Fault is the place where two tectonic plates, the North American and Pacific plates, come together.  The San Andreas Fault is probably the most famous fault in the nation, if not the world.  It is 800 miles long and 10 miles deep.

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List of  Earthquakes:

1857 Fort Tejon Earthquake-7.9

1906 San Francisco Earthquake-7.8

1957 San Francisco Earthquake-5.7

1989 Loma Prieta Earthquake-6.9

2004 Parkfield earthquake-6.0