WILSHIRE FAULT - EARTHQUAKES IN HOLLYWOOD

Citation
C. Hummon et al., WILSHIRE FAULT - EARTHQUAKES IN HOLLYWOOD, Geology, 22(4), 1994, pp. 291-294
Citations number
28
Categorie Soggetti
Geology
Journal title
ISSN journal
00917613
Volume
22
Issue
4
Year of publication
1994
Pages
291 - 294
Database
ISI
SICI code
0091-7613(1994)22:4<291:WF-EIH>2.0.ZU;2-1
Abstract
The Wilshire fault is a potentially seismogenic, blind thrust fault in ferred to underlie and cause the Wilshire arch, a Quaternary fold in t he Hollywood area, just west of downtown Los Angeles, California. Two inverse models, based on the Wilshire arch, allow us to estimate the l ocation and slip rate of the Wilshire fault, which may be illuminated by a zone of microearthquakes. A fault-bend fold model indicates a rev erse-slip rate of 1.5-1.9 mm/yr, whereas a three-dimensional elastic-d islocation model indicates a right-reverse slip rate of 2.6-3.2 mm/yr. The Wilshire fault is a previously unrecognized seismic hazard direct ly beneath Hollywood and Beverly Hills, distinct from the faults under the nearby Santa Monica Mountains.