Group of strike-slip faults along the coast of California
San Diego Trough Fault Zone
San Diego Trough, San Diego Trough Fault
The San Diego Trough Fault Zone relative to other offshore faults
Etymology
San Diego, California
Location
Offshore San Diego
Country
United States
State
California
Characteristics
Part of
California continental borderland
Length
150–166 km (93–103 mi)
Tectonics
Earthquakes
Ms 5.8 1986 Oceanside earthquake
Type
Strike-slip
The San Diego Trough Fault Zone is a group of connected right-lateral strike-slip faults that run parallel to the coast of Southern California, United States, for 150–166 km (93–103 mi). The fault zone takes up 25% of the slip within the Inner Continental Borderlands. Portions of the fault get within 30 km (19 mi) of populated cities; however, the faults never reach shore. The north of the fault zone begins where the San Pedro Basin Fault Zone and the Santa Catalina Fault Zone meet, and the southern section terminates where it reaches the Bahía Soledad Fault. Seismic risk along the fault is high, with potential earthquake scenarios reaching up to magnitude 7.9 in the worst case. An earthquake of this size would devastate coastal areas.
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