Quaternary Fault and Fold Database of the United States

As of January 12, 2017, the USGS maintains a limited number of metadata fields that characterize the Quaternary faults and folds of the United States. For the most up-to-date information, please refer to the interactive fault map.

San Felipe fault zone (Class A) No. 496

Last Review Date: 2017-07-01

citation for this record: Bryant, W.A., compiler, 2017, Fault number 496, San Felipe fault zone, in Quaternary fault and fold database of the United States: U.S. Geological Survey website, https://earthquakes.usgs.gov/hazards/qfaults, accessed 04/30/2024 04:41 PM.

Synopsis
Name comments
County(s) and State(s)	IMPERIAL COUNTY, CALIFORNIA RIVERSIDE COUNTY, CALIFORNIA SAN DIEGO COUNTY, CALIFORNIA
Physiographic province(s)	PACIFIC BORDER RANGES BASIN AND RANGE
Reliability of location	Compiled at 1:unspecified scale. Comments: Location of fault from Qt_flt_ver_3-0_Final_WGS84_polyline.shp (Bryant, W.A., written communication to K.Haller, August 15, 2017) attributed to Steely and others (2009).
Geologic setting
Length (km)	170 km.
Average strike
Sense of movement	Right lateral
Dip
Paleoseismology studies
Geomorphic expression
Age of faulted surficial deposits
Historic earthquake
Most recent prehistoric deformation	late Quaternary (<130 ka) Comments:
Recurrence interval
Slip-rate category	Unspecified
Date and Compiler(s)	2017 William A. Bryant, California Geological Survey
References	#2878 Jennings, C.W., 1994, Fault activity map of California and adjacent areas, with locations of recent volcanic eruptions: California Division of Mines and Geology Geologic Data Map 6, 92 p., 2 pls., scale 1:750,000. #8300 Steely, A.N., Janecke, S.U., Dorsey, R.J., and Axen, G.J., 2009, Early Pleistocene initiation of the San Felipe fault zone, SW Salton Trough, during reorganization of the San Andreas fault system: Geological Society of America Bulletin, v. 121, p. 663–687.