Dextral Strike-Slip Faulting

Right-stepping, en echelon surface ruptures in an asphalt road resulting from an earthquake on the Imperial fault during the magnitude 6.9 earthquake of October 15, 1979, in Imperial Valley, California. Photo credit: University of Colorado. Image from website: http://www.ngdc.noaa.gov/seg/hazard/slideset/10/10_slides.html