Earthquake Causes Tsunami Energy accumulates in the overriding plate until it exceeds the frictional forces between the two stuck plates. When this happens, the overriding plate snaps back into an unrestrained position.
Agoura Hills is a city in Los Angeles County, California. Its population was estimated to be at 20,843 in 2014, up from 20,537 at the 2000 census.
Sponsored Topics. The City of Sierra Madre is a municipality in Los Angeles County, California whose population was 10,917 at the 2010 census, up from 10,580 at the time of the 2000 census. The city is located in the Foothills of the San Gabriel Mountains below the southern edge of the Angeles National Forest. Pasadena and Altadena are to its west, with Arcadia to its south and east. Sierra Madre is known as Wistaria City, and its city seal is decorated with a drawing of the now widely known 500-foot (150 m) vine. It is also called the Village of the Foothills and was an All-America City in 2007.