Rose Canyon Fault

Rose Canyon Fault Map

The Rose Canyon Fault is a right-lateral strike-slip fault running in a north-south direction through San Diego County, California.[1]

Extent

The Rose Canyon Fault is about 30 km (19 mi) in length. It starts in the Mission Valley area and heads past Mt. Soledad and La Jolla into the Pacific Ocean where it joins other faults such as the Oceanside Fault.[2]

Current state

Not much is known about the Rose Canyon fault, though its slip-rate is thought to be 1.1 mm/year.[1]

The Rose Canyon Fault has sustained at least one late Holocene rupture, with the date of the earthquake estimated to be after AD 1450 and most likely prior to construction of the San Diego Mission in 1769, as a large historical Rose Canyon earthquake would likely have destroyed that mission.[3] The last earthquake believed to have occurred on the fault occurring on May 27, 1862, which was around magnitude 6,[4] however its association with the Rose Canyon Fault is debatable.[5]

The Rose Canyon Fault has garnered more attention because it runs through such highly populated areas, but is not thought to be much of a threat. However, some geophysicists, such as Scripps Institution of Oceanography researcher Jeff Babcock, have hypothesized that a concentrated earthquake involving the Rose Canyon, Oceanside, and Newport–Inglewood faults could result in an earthquake up to magnitude 7.6 on the moment magnitude scale.[2]

References

  1. 1 2 Hart, E.W., Bryant, W.A., Wills, C.J., Treiman, J.A., and Kahle, J.E., "Summary Report: Fault Evaluation Program, 1987–1988, Southwestern Basin and Range Region and Supplemental Areas. Depart of Conservation, Division of Mines and Geology Open-File Report", 1989, "" March 2, 2010
  2. 1 2 Monroe, Robert, "Finding Faults", 2002, "" March 2, 2010
  3. ↑ Southern California Edison, Paleoseismic Assessment of the Late Holocene Rupture History of the Rose Canyon Fault in San Diego, December, 2012 ""
  4. ↑ De Wyze, Jeannete (2 March 2000). "Earthquake San Diego Danger Zones" (PDF). San Diego Reader. Retrieved 4 October 2016.
    Robbins, Gary (26 May 2012). "SD marks 150th anniversary of biggest quake". San Diego Union Tribune. Retrieved 4 October 2016.
  5. ↑ Glenn Roquemore (1 April 1997). The Seismic Risk in the San Diego Region: Special Focus on the Rose Canyon Fault Systems: Workshop Proceedings. DIANE Publishing. p. 6. ISBN 978-0-7881-4262-8.

Sources

Further reading

External links

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