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2005 La Conchita landslide
On January 10, 2005, a major landslide occurred in the town of La Conchita, California. The landslide killed 10 people, and destroyed or damaged dozens of houses. The landslide occurred on part of a previous landslide that occurred in 1995. The historic slides are part of the larger Rincon Mountain slide, which "started many thousands of years ago and will continue generating slides in the future."〔
==Setting==
La Conchita is a very small community, located on the southern California coastline between Ventura and Santa Barbara. The community lies on a narrow strip of land about wide between the shoreline and abutting a high bluff. The top of the bluff is covered by avocado and citrus orchards. The bluff above La Conchita has a slope of approximately 35 degrees and consists of poorly cemented marine sediments.
Geologic evidence indicates that landslides have been occurring at and near La Conchita for many thousands of years up to the present, on a geologically frequent basis.〔News Release (October 19, 2005) ("Recent Landslides in La Conchita, California Belong to a Much Larger Prehistoric Slide, Report Geologists" ) University of California, Santa Barbara〕 Historical accounts support this. Reported landslides began in 1865. In both 1889 and 1909, the Southern Pacific rail line running along the coast was inundated. In the 1909 slide, a train was buried. Since that time, other slides have occurred, covering at times cultivated land, roadways, and the community itself.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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