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Loma Prieta, California, Earthquake October 17, 1989. Crack system near Summit Road, half a mile southeast of Highway 17.

Dates

Date Taken
1989

Summary

Loma Prieta, California, Earthquake October 17, 1989. Crack system near Summit Road, half a mile southeast of Highway 17. As it crosses Summit Road, the crack trends nearly north, rather than northwest, and displays a large component of left-lateral displacement. In general, the upthrown block is on the downhill side of this crack. The swale along the crack on the northeast side of Summit Road ridge in this area suggests similar displacement may have occurred in the past. Figure 10-C, U.S. Geological Survey Circular 1045.

Contacts

Data Owner :
U.S. Geological Survey
Photographer :
Plafker, George

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Identifiers

Type Scheme Key
name photoLibrary pla00038
number photoLibrary 28436
batch photoLibrary batch88
number_in_book photoLibrary 38

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