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Earthquakes: History The State of Quakes

[San Andreas Fault]
Photo by Michael Collier.

Now that we've learned a little about what causes earthquakes, we can take a closer look at some historical quakes in California.

California has many active faults including the San Andreas fault which sometimes produce large earthquakes.

For this reason there is a very long history of active earthquake research in California to understand how and why earthquakes occur.