Today in Earthquake History
Earthquake History for August 1st
From Significant Earthquakes of the World, 1989.
This earthquake was associated with the first recorded surface faulting in the western foothills of the Sierra Nevada. New fractures in the ground were observed in a 3.8-km-long north- to north-northwest-trending zone. The block east of the fault moved upward relative to that on the west, as shown by about 55 mm of slip across the surface ruptures and 180 mm of vertical movement of benchmarks near the rupture zone. Felt over a large area of northern California and western Nevada.
Abridged from Seismicity of the United States, 1568-1989 (Revised), by Carl W. Stover and Jerry L. Coffman, U.S. Geological Survey Professional Paper 1527, United States Government Printing Office, Washington: 1993.
Damage Photos from the USGS Photographic Library
From United States Earthquakes, 1968.
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