Faults that combine sideways with up-and-down motions are called oblique by seismologists. The Santa Clara Valley south of San Francisco holds a fault prone to oblique motions, for example, seen ...

The geological study, written up in the journal Lithosphere, details that there is a 15- to 20-mile-long stretch of the San Andreas fault ‒ called the Durmid ladder structure ‒ that could ...