Original forms and initial modifications of the Galway Lake Road scarp formed along the Emerson Fault during the 28 June 1992 Landers, California, earthquake

A remarkable scarp formed southeast of the Galway Lake Road during the M_w 7.3 Landers, California earthquake. Over the first 11 months following the earthquake, topographic surveys and ground stereoscopic modifications of the faulted landforms were interpreted. The pre-earthquake topography at the site provided no clear evidence of the last similar slip event. Simple diffusion erosion models of the time required to bring the new scarp to its pre-Landers event configuration indicate that the last major rupture may have been several thousand years ago. -from Authors