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The 1857 Fort Tejon earthquake occurred at about 8:20 a.m. (Pacific time) on January 9 in central and Southern California.One of the largest recorded earthquakes in the United States, [6] with an estimated moment magnitude of 7.9, it ruptured the southern part of the San Andreas Fault for a length of about 225 miles (350 km), between Parkfield and Wrightwood.
The probability of a serious earthquake on various faults has been estimated in the 2008 Uniform California Earthquake Rupture Forecast. According to the United States Geological Survey, Southern California experiences nearly 10,000 earthquakes every year. [3] Details on specific faults can be found in the USGS Quaternary Fault and Fold Database.
The San Jacinto Fault Zone and the San Andreas Fault (SAF) accommodate up to 80% of the slip rate between the North American and Pacific plates.The extreme southern portion of the SAF has experienced two moderate events in historical times, while the SJFZ is one of California's most active fault zones and has repeatedly produced both moderate and large events.
1857 Fort Tejon earthquake: About 350 kilometers (220 mi) were ruptured in central and southern California. Though it is known as the Fort Tejon earthquake, the epicenter is thought to have been located far to the north, just south of Parkfield. Two deaths were reported. Its moment magnitude was 7.9.
Fort Tejon in California is a former United States Army outpost which was intermittently active from June 24, 1854, until September 11, 1864. It is located in the Grapevine Canyon ( La Cañada de las Uvas ) between the San Emigdio Mountains and Tehachapi Mountains .
The Great 1857 Fort Tejon earthquake on January 9, 1857, with an estimated magnitude of 7.9 on the San Andreas Fault was strong enough to temporarily switch the direction of the flow of the Kern River. Fish in the now dry Tulare Lake were left stranded on the shores.
1857 earthquake may refer to: 1857 Basilicata earthquake (Italy) 1857 Fort Tejon earthquake (California, US) 1857 Parkfield earthquake, ...
1700 Cascadia earthquake; 1769 earthquake; 1812 San Juan Capistrano earthquake; 1812 Ventura earthquake; 1838 San Andreas earthquake; 1857 Fort Tejon earthquake; 1868 Hayward earthquake; 1872 Owens Valley earthquake; 1892 Laguna Salada earthquake; 1892 Vacaville–Winters earthquakes; 1898 Mare Island earthquake; 1899 San Jacinto earthquake ...