24 - Dec. 21, 1812 EQ San Andreas Fault Major historic EQs...

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01:04 The San Andreas Fault in Southern California     Gulf Of CA  North American Plate Pacific Plate Big Bend Region 1857 Earthquake ruptured much further North 1812 EQ ruptured towards the southeast  San Gorgonio  South end of the Creeping Section –ruptured in 1857 300+ years in the middle of the fault, since there has been an EQ San Jacinto Fault Recent studies show that the San Jacinto Fault zone and the San Andreas Fault  are of equal importance and of equal slip rate about 15 mm/year Stores up energy slowly, maybe it’s not overdue Major Faults of the Los Angeles Region SEE HANDOUT Mission San Buenaventura Ventura Basin Oakridge fault
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San Cayetano Fault Two faults overriding basin, rocks are heavy so it depresses the crust San Cayetano fault  slipping at about 1cm/year, makes it the fastest reverse fault, south of the  Cascadia Fault Easy Wall 1999 Trench Generated about 5 m of slip in the most recent earthquake
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Unformatted text preview: Dec. 21, 1812 EQ San Andreas Fault Major historic EQs in CA with magnitudes in the range 7 to 8 *The locations of the three great EQs Eastern California Shear Zone-a set of right lateral strike slip faults, Builds Death Valley, Panama Valley, Owen Valley Runs north along the Mojave Desert and the east side of the Sierra Nevada Peels off the San Andreas Fault near Palm Springs 10 mm/year Generated 3 really big EQS Landers EQ 1992- Right Lateral, Magnitude 7.3 Not that much damage, one fatality Hector Mine EQ 1999 Mg. 7.1 Fault Scarp Grave of 1872 EQ REALLY big, 7.7 Magnitude Ruptured Owens Valley Fault (major fault in the Eastern CA Shear Zone)right lateral strike slip Piece that broke was only 150 km long (relatively short for a 7.7 EQ) 01:04 01:04...
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24 - Dec. 21, 1812 EQ San Andreas Fault Major historic EQs...

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