Rubin, Charles M. Department of Geological Sciences, Central Washington University, Ellensburg, Washington.
- Earthquake and rupture pattern
- Links to Primary Literature
- Additional Readings
Strike-slip faults are vertical fractures of the Earth's crust parallel to the relative motion (usually horizontal) between two crustal blocks. Rupture of such faults occurs when accumulated shear stresses due to frictional resistance between the sliding blocks is relieved by sudden lateral shifting (slipping) of the blocks. The rupture of the Denali fault in Alaska during the moment magnitude (M W) 7.9 earthquake of November 3, 2002, ranks among the largest strike-slip ruptures of the past two centuries. Its rupture length and slip magnitude are comparable with those of the great California earthquakes of 1906 and 1857. Because surface ruptures accompanying large-magnitude earthquakes on strike-slip faults are rare, detailed observations of these phenomena have been scarce. The Denali rupture may provide the best modern analog for large events on the San Andreas Fault in California.
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