Search results
Results from the WOW.Com Content Network
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.
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 .
At least six large ruptures of the San Jacinto Fault Zone are known to have followed the 1857 Fort Tejon earthquake that ruptured the central segment of the San Andreas Fault. These events began with the 1899 San Jacinto earthquake and occurred at intermittent intervals culminating with the 1987 Superstition Hills and Elmore Ranch events.
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.
While the 1812 San Juan Capistrano, 1857 Fort Tejon, and 1872 Owens Valley shocks were in mostly unpopulated areas and only moderately destructive, the 1868 Hayward event affected the thriving financial hub of the San Francisco Bay Area, with damage from Santa Rosa in the north to Santa Cruz in the south.
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 Fort Tejon earthquake: April 24, 1867: Kansas: 5.1 M fa: 0: 1867 Manhattan, Kansas earthquake: April 2, 1868: Hawaii: 7.9 M fa 77: 1868 Hawaii earthquake: October 21, 1868: California: 6.3–6.7 M L 30: 1868 Hayward earthquake: February 20, 1871: Hawaii 6.8 M L 0 1871 Lānaʻi earthquake [2] March 26, 1872: California: 7.4–7.9 M w 27: ...
Now Fort Tejon State Historic Park in the Tejon Pass area. 1857 Fort Tejon earthquake – moment magnitude of 7.9, average slip along the fault was 4.5 meters (15 ft) Monolith Cement Works: supplied concrete for the construction of Hoover Dam and other major public works; east of Tehachapi Pass.