PACIFIC OCEAN S A N T A M O N I C A B A Y 1 1 23 23 27 27 10 2 2 34 101 101 405 405 Miles Kilometers 2 2 0 4 0 4 Geology of the Santa Monica Mountains vvvvv = Fault line = Fault line inferred Highways Santa Monica Mountains National Recreation Area authorized boundary Ventura County - Los Angeles County Line Santa Monica Mountains National Recreation Area November 2007 National Park Service U.S. Department of the Interior = Anticline = Unconformity Geology modeled from Dibblee Geological Foundation Maps. Not all fault lines shown. Site-specific conditions should be verified by the landowner via surface and/or subsurface mapping and exploration. The park boundary extends to the mean high tide line along the coast. North V E NT U RA C OU NT Y L O S A N GE L ES CO UN T Y SAN FERNANDO VALLEY LOS ANGELES Geological Units Recent Sediments Detrital Sediments of Lindero Canyon, Monterey, and Modelo Formations Conejo Volcanics and Diabase Intrusions Lower, Middle, Upper Topanga Formations Sespe Formation Santa Susana / Coal Canyon and Llajas Formations Chico, Tuna Canyon, and Chatsworth Formations Cretaceous Intrusions Santa Monica Formation Age .01 1.6 vvvvv 5.3 13.4 16.6 vvvvv vvvvv 24 38 58 vvvvv 65 102 138 Millions of Years Ago North B r a nc h M a l i b u C o ast F a u lt S y c a m o r e C a n y o n F a u l t B o n e y M o u n tain Fau l t M alib u C o a s t Fa u l t T o p a n g a A n t i cl i n e B e n e d i c t Ca n y o n F a u lt