Lateral P-velocity gradients near major strike-slip faults in California
Stierman DJ and Zappe SO. 1981. Lateral P-velocity gradients near major strike-slip faults in California. Science. 213(4504):207-209
The P-wave velocity in shallow crystalline rock decreases systematically from a normal value of about 5.5 kilometers per section 20 kilometers or more from the Garlock and San Andreas faults to less than 3 kilometers per second at distances of less than 2 kilometers from these faults. This lateral velocity gradient results from increased fracturing nearer these major strike-slip faults and that this fracturing dominates the response of the shallow crust to tectonic stress.
- Type
- Journal Article
- Authors
- Stierman, Donald; Zappe, Steve
- Units
- LAKE
- Keywords
- Active Faults, California, Crust, Deformation, Distribution, Earthquakes, Elastic Waves, Fault Zones, Faults, Field Studies, Fractures, Garlock fault, Geology, Granites, Mojave Desert, P waves, precursors, Prediction, rock mechanics, San Andreas Fault, Seismology, shear stress, Sketch Map, Southern California, Stress, Strike Slip Faults, Velocity, Velocity Structure