Earthquakes in california are choose one: a. always above magnitude 7.5, because the san andreas is such a large fault. b. the result of widening along the san andreas fault, which will eventually cause western california to sink into the ocean. c. shallow and occur in the upper 15 to 20 km of crust, even though the san andreas fault cuts through the crust to deeper depths. d. the result of reverse faulting along the san andreas fault.