Most Basin and Range structures result from the tilting of these blocks. Reverse faults Reverse faults are associated with compressional forces- 2 plates or fault blocks pushing towards each other. Thrust faults are reverse faults that move up a shallower angle than ordinary reverse faults. The photo below shows a creek located along the San Andreas Fault. Compare the photo of the San Andreas Fault with the strike-slip fault diagram.
Earthquake processes Rupturing rocks release huge amounts of energy.
The sudden release of energy is what is felt in an earthquake. Earthquake energy is in the form of seismic waves. The seismic waves radiate out from a central point, called the focus or hypocenter , like ripples moving outward from a pebble tossed into a lake. The location directly above the hypocenter, on the earth's surface, is called the epicenter . Four types of seismic waves are generated when faulting triggers an earthquake.