The San Andreas Fault is situated in California in the United States. The San Andreas Fault is a deep crack in the Earth's crust, where the North American Plate and the Pacific Plate slide past each other.
The average range of motion along the San Andreas fault zone is about 2 inches per year, about the same rate of growth of human fingernails.
The San Andreas fault is not one single fault, but a series of faults called a fault zone. Movement can occur along one section along the fault zone at any time. This fault zone is over 800 miles long, and up to 10 miles deep.
credits for this image go to berkeley.edu.com
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