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About one kilometer northwest of Woodville on the E.R. Strain farm this fence was offset 2.6 m by the main fault. Note the swerve in the fence as it approaches the fault-trace. The total displacement of the straight portions of the fence is about 3.3 m. On the Shafter ranch, a crevice momentarily opened wide enough to admit a cow and then immediately closed leaving only the cow's tail visible. In this area, the fault-trace was a trench more than 2 m wide filled with broken soil blocks. The photo is looking northeast. The lateral, or strikeslip fault offset is large; however, the trace is nearly invisible. Image Credit: U.S. Geological Survey April 18, 1906 San Francisco USA earthquake The 1906 San Francisco earthquake was the largest event (magnitude 8.3) to occur in the conterminous United States in the 20th Century. Recent estimates indicate that as many as 3,000 people lost their lives in the earthquake and ensuing fire. In terms of 1906 dollars, the total property damage amounted to about $24 million from the earthquake and $350 million from the fire. The fire destroyed 28,000 buildings in a 520-block area of San Francisco. Event Data:
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