San Andreas Fault
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The San Andreas Fault is a continental right-lateral strike-slip transform fault that extends roughly 750 mi through the U.S. state of California. It forms part of the tectonic boundary between the Pa
The fault (right) and the Carrizo Plain (left)
Arrows show relative motion of the North American plate (southeastward) and the Pacific plate (northwestward)
Plaque showing location of San Andreas Fault in San Mateo County
Aerial photo of the San Andreas Fault in the Carrizo Plain
Parkfield earthquake
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Parkfield earthquake is a name given to various large earthquakes that occurred in the vicinity of the town of Parkfield, California, United States. The San Andreas fault runs through this town, and s
San Andreas Fault
…in 1857, 1881, 1901, 1922, 1934, and 1966, scientists predicted that another earthquake should occur in Parkfield in 1993. It eventually occurred in 2004. Due to the frequency of predictable activity, Parkfield has become one of the most important areas in the world for large earthquake research. In 2004…
Predicting the 2004 event for 1993