The California Geological Survey’s 1987 Earthquake Planning Scenario for a Magnitude 7.5 Earthquake on the Hayward Fault in San Francisco Bay Area anticipated 1,500 to 4,500 deaths, depending on the time of occurrence, and three times that number of nonfatal casualties. What are the two major fault lines in California? California Earthquake Faults shows the vast majority of faults in California the USGS classifies as "Historic" (active in the last 150 years) and "Holocene to Latest Pleistocene" (active in the last 15,000 years). How many faults are in Southern California? This is because these cities sit on or near the San Andreas Fault which is the source of most seismic activity in California. The San Andreas Fault is the sliding boundary between the Pacific Plate and the North American Plate. - "Describe Found Location" controls whether or not a location name is displayed when you use the Find function. Do you live near the San Andreas fault? California Earthquake Faults is an iPhone/iPad app that shows your current location or a location you specify, Names, distances and color coding of the closest 44 (iPhone) or 70 (iPad) faults. The strike-slip earthquakes on the San Andreas Fault are a result of this plate motion. The main quake, compounded with more than 100,000 aftershocks, caused a major fault to … Each year the southern California area has about 10,000 earthquakes. Southern California alone experiences over 10,000 earthquakes a year, hundreds above Magnitude 3.0 . Click on the fault lines for more information. (1) We have another app called U.S. Earthquake Faults that covers the continental United States. The last significant earthquake on the Southern California stretch of the San Andreas fault was in 1857, and there has not been a rupture of the fault along its southern end from San Bernardino to the Salton Sea since 1690. Click here to use the California fault activity map. What are the two major fault lines in California? It requires IOS 12.0 or later and an active WiFi or cellular services (preferably both) that allow secure connections to the Internet. Photo in the article by “Wikimedia Commons” https://commons.wikimedia.org/wiki/File:California_Department_of_Conservation_%E2%80%93_Earthquake_Shaking_Potential_for_California.jpg. It's described The faults shown here are represented by simple lines which do not convey how complicated they can be. The first screenshot was taken while approaching the Napa fault on Highway 121/12 in California. You will get a response. Creep is relatively common among California faults, including the San Andreas fault, which scientists have pinpointed as the likely source of The Big One.. Ballenas Fault: Gulf of California, United States: Transform: Active: Brothers Fault Zone: Oregon, United States: Bulnay Fault 370 Mongolia Sinstral Active 1905 Bolnai (M8.3) Calaveras Fault: 120 San Francisco Bay Area, California, United States Dextral Active 1911 Morgan Hill (M6.5), 1984 Morgan Hill (M6.2) Cascadia megathrust: 1000 Keeping goods moving through the Port of Los Angeles. Palos Verdes Fault. The San Andreas Fault is the sliding boundary between the Pacific Plate and the North American Plate. The San Andreas Fault is a continental transform fault that extends roughly 1,200 kilometers (750 mi) through California. It took many millions of years of movement on faults (earthquakes) to shape Southern California's current landscape.
All Rights Reserved. Scientist project the San Andreas fault line could cause a devastating earthquake in California by 2030. The Pacific Plate is moving north, creating a transform fault (the San Andreas and related faults) Over the last 20 million years the Pacific Plate has slid about 200 miles north. Residents of California: You should not however necessarily be alarmed if you live or work near one of California’s estimated 15,000 faults. San Francisco, Sacramento and the Sierra Nevada are on the North American Plate. It forms the tectonic boundary between the Pacific Plate and the North American Plate, and its motion is right-lateral strike-slip (horizontal). The current version (3.03) is available on the App Store are being discovered all of the time. (2) Under certain conditions, Location Services doesn't work properly. California is firmly planted on the top of the earth’s crust in a location where it spans two tectonic plates. - "Method" controls when the map display is updated when you are moving. Contact me at dpasadis@icloud.com. NOTES: The study established how a major earthquake could begin on the San Jacinto fault and continue on the San Andreas, which is California’s longest and one of its most dangerous faults. Residents in the Mexicali area are still dealing with aftershocks from the 7.2-magnitude earthquake. It slices California in two from Cape Mendocino to the Mexican border. Scientists detect new fault line in California parallel to San Andreas Fault that may explain seismic conditions in the state. State of California. Three types of faults. “It does look like we might be seeing two different faults,” seismologist Lucy Jones of Caltech told a press conference Friday. Sizable temblors: ( 1 ) we have another App called U.S. earthquake faults that covers the continental States! 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