Relationship between the Santa Sonica, Hollywood, and Raymond faults.

BY DIEGO FURTADO

COMPRESSION ZONE The “BIG BEND”: Cause of Compression between the Pacific Plate and North American Plate

Mountains and faults are formed: San Gabriel Mountains and Santa Monica Mountains

Transverse Range Southern Boundary Fault System: Extends from east to west unlike other California mountains

TRANSVERSE RANGES FAULT SYSTEM Base of San Gabriel and Santa Monica Mountains

West- trending system of faults that extends for 200 km

Oblique-slip, reverse-slip, and strike-slip

RAYMOND, SANTA MONICA, AND HOLLYWOOD FAULTSSANTA MONICA HOLLYWOOD RAYMOND

TYPE OF FAULT : Left-reverse Left-reverse Left-lateral (minor reverse) ▼ ▼ ▼

LAST KNOWNSURFACE RUPTURE: ~900 A.D ~800 A.D. ~1000 A.D

PROBABLE MAGNITUDES: 6.0 - 7.0 5.8 – 6.5 6.0 – 7.0

• Santa Monica fault connects with Hollywood fault at west Beverly Hills Lineament

• Hollywood fault likely connects to Raymond fault at Los Angeles River floodplain

SLIP RATE (mm/yr):

LENGTH:

0.27 – 0.39 0.33 – 0.75 0.10 - 0.22

40 km 15 km 26 km

REFERENCES• http://geomaps.wr.usgs.gov/archive/scamp/html/scg_flt.html• http://qcode.us/codes/malibu-general-plan/view.php?topic=ii-5_0-5_2-5_2_2&frames=on• http://www.data.scec.org• Kristin D. Weaver, Paleoseismology and Geomorphology of the Raymond Fault, Los Angeles County, California, Bulletin of the Seismological Society of America pp. 1409–1429, December 2000, P. 1410-1413.• James F. Dolan, Eldon M. Gath, Lisa B. Grant, Mark Legg, Scott Lindvall, Karl Mueller, Michael Oskin, Daniel F. Ponti, Charles M. Rubin, Thomas K. Rockwell, John H, Shaw, Jerome A.Treiman, Chris Walls, and Robert S. Yeats (compiler), P. 1-7.• James F. Dolan, David D. Bowman, and Charles G. Sammis, Data Repository for “Long range and long term fault intersections in southern California”, Supporting data, references, and notes for paleo-earthquakes in the Los Angeles region.