3/24/2024 0 Comments San andreas fault earthquakeMajor "sister" faults within the San Francisco Bay Area.Īssuming the plate boundary does not change as hypothesized, projected motion indicates that the landmass west of the San Andreas Fault, including Los Angeles, will eventually slide past San Francisco, then continue northwestward toward the Aleutian Trench, over a period of perhaps twenty million years. The San Andreas (reds and orange) and its The rate of slippage averages about 33 to 37 millimeters (1.3 to 1.5 in) a year across California. The Pacific Plate, to the west of the fault, is moving in a northwest direction while the North American Plate to the east is moving toward the southwest, but relatively southeast under the influence of plate tectonics. Following the 1906 San Francisco earthquake, Lawson concluded that the fault extended all the way into southern California. It is named after San Andreas Lake, a small body of water that was formed in a valley between the two plates. The fault was first identified in 1895 by professor Andrew Lawson from UC Berkeley who discovered the northern zone. Of the San Andreas Fault line and part of the 2,650 mile Pacific Crest Trail. Vasquez Rocks in Agua Dulce, California are evidence
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