Laguna Salada Fault: Difference between revisions
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98.176.67.115 (talk) Added information about the fault system from SDSU professor Eric Frost who studies the area. |
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The Laguna Salada Fault is a probable southern continuation of the [[Elsinore Fault Zone]] in [[Southern California]].<ref name="UofO1">{{cite news | title=Previous Work in Laguna Salada | url=http://www.uoregon.edu/~rdorsey/LagSal.html | author=Dorsey, Becky | publisher=University of Oregon |accessdate=2010-04-04}}</ref> These faults are considered to be secondary cohorts of the [[San Andreas Fault]], and as such share some of the strike-slip motion between the [[North American Plate]] and the [[Pacific Plate]].<ref>[http://www.seismolab.caltech.edu/ Cal Tech]</ref> |
The Laguna Salada Fault is a probable southern continuation of the [[Elsinore Fault Zone]] in [[Southern California]].<ref name="UofO1">{{cite news | title=Previous Work in Laguna Salada | url=http://www.uoregon.edu/~rdorsey/LagSal.html | author=Dorsey, Becky | publisher=University of Oregon |accessdate=2010-04-04}}</ref> These faults are considered to be secondary cohorts of the [[San Andreas Fault]], and as such share some of the strike-slip motion between the [[North American Plate]] and the [[Pacific Plate]].<ref>[http://www.seismolab.caltech.edu/ Cal Tech]</ref> |
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Professor Eric Frost of SDSU is a structural geologist that has done extensive work in this region. He indicates that the lagoon area is a half graben as opposed to the full graben seen at the Salton Sea basin. The Sierra de la Cucapah mountains to the east dropped of as the continental mass east of the San Andreas fault system moved western California and Baja NNW into their current position and the pull-apart basin formed. As they broke from the main mass and that main mass continued its progression another major fault formed, the Lagina Salada fault and the faulting to the east side of Sierra Juarez with thin crust below. Facturing, this tilted downward to the east side forming the half graben. |
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The Laguna Salada fault is a complex fault system with multiple fractures crossing the Sierra de le Cucapah mountains. |
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==Notes== |
==Notes== |
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Revision as of 18:40, 14 April 2010
The Laguna Salada Fault is a geological fault between the United States and Mexico. About 64 kilometres (40 mi) to 80 kilometres (50 mi) long, it straddles the California–Baja California border.[1] It is thought to be the origin of the 2010 Baja California earthquake.[1] Prior to the 2010 quake, the fault line had not produced a major quake for over 100 years.[2] According to some seismologists the Laguna Salada, Baja California, earthquake of 23 February 1892 ranks among the largest earthquakes in California and Baja California in historic times.[3]
The Laguna Salada Fault is a probable southern continuation of the Elsinore Fault Zone in Southern California.[4] These faults are considered to be secondary cohorts of the San Andreas Fault, and as such share some of the strike-slip motion between the North American Plate and the Pacific Plate.[5]
Professor Eric Frost of SDSU is a structural geologist that has done extensive work in this region. He indicates that the lagoon area is a half graben as opposed to the full graben seen at the Salton Sea basin. The Sierra de la Cucapah mountains to the east dropped of as the continental mass east of the San Andreas fault system moved western California and Baja NNW into their current position and the pull-apart basin formed. As they broke from the main mass and that main mass continued its progression another major fault formed, the Lagina Salada fault and the faulting to the east side of Sierra Juarez with thin crust below. Facturing, this tilted downward to the east side forming the half graben.
The Laguna Salada fault is a complex fault system with multiple fractures crossing the Sierra de le Cucapah mountains.
Notes
- ^ a b "One death reported in Baja quake". Los Angeles Times. 2010-04-04. Retrieved 2010-04-04.
- ^ Chang, Alicia (2010-04-04). "Big Baja quake came from 'chaotic' fault system". San Jose Mercury News. Retrieved 2010-04-04.
- ^ Hough, Susan (August 2004). "Revisiting the 23 February 1892 Laguna Salada Earthquake". Bulletin of the Seismological Society of America. 94 (4): 1571–1578. doi:10.1785/012003244.
- ^ Dorsey, Becky. "Previous Work in Laguna Salada". University of Oregon. Retrieved 2010-04-04.
- ^ Cal Tech