San francisco fault map

When we think of the next big earthquake, we think of the San Andreas fault. The San Andreas fault line formed about 30 b5 tv show years ago as the North American plate engulfed nearly all of the Farallon plate. Since then, the North American plate has ground against the Pacific plate at a boundary called a strike-slip fault. This fault is one of the largest faults in the world, san francisco fault map, running more than miles from the Salton Sea to Cape Mendocino.

From space, the San Andreas Fault and its attending landforms are beautifully revealed. By using the buttons at the upper left to zoom and pan, and those in the upper right to switch between photographs and the base map or both by clicking 'Hybrid' , the fault's intimate role in California becomes apparent. Double-clicking anywhere on the map centers it. Information about how the map was made can be found below the map. The location of the San Andreas Fault is shown on this map. Its trace is marked by red dots connected by thin red straight lines. The positions were measured from professional geological maps, primarily those of the United States Geological Survey, California Geological Survey, Dibblee maps and geological literature.

San francisco fault map

Select your county from the dropdown menu above, or click on your county on the California map to the left to learn more about California earthquake risk and faults near you. How to Strengthen Your House. See the USGS interactive fault map to learn more about faults in this area. What is the Earthquake Risk in San Diego? What is the Earthquake Risk in San Francisco. Already a CEA policyholder? Manage your policy. Learn about Personal Preparedness. Translate Translate. North Coast. What You Need To Know. This fault zone is capable of generating a magnitude 9 or larger earthquake on average every years. The last such event was in

Here, the plate motion is being reorganized from right-lateral to divergent.

The San Andreas Fault is a continental right-lateral strike-slip transform fault that extends roughly 1, kilometers mi through California. Traditionally, for scientific purposes, the fault has been classified into three main segments northern, central, and southern , each with different characteristics and a different degree of earthquake risk. The average slip rate along the entire fault ranges from 20 to 35 mm 0. In the north, the fault terminates offshore near Eureka, California at the Mendocino Triple Junction , where three tectonic plates meet. It has been hypothesized that a major earthquake along the Cascadia Subduction Zone could trigger a rupture along the San Andreas Fault. Here, the plate motion is being reorganized from right-lateral to divergent.

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San francisco fault map

The Hazard Viewer is a one-of-its-kind interactive map of regional hazards, featuring the best available mapping resources and data for each hazard. The Hazard Viewer is a one-of-its-kind interactive map of regional hazards, curated from the most relevant, current maps for the nine-county Bay Area. It brings together the best set of mapping resources that exist in the region for each hazard. An easy-to-use tool for contextualizing local risk at the household-, neighborhood-, jurisdiction- and county-level, the Hazard Viewer includes layers for viewing:. The information provided in the Hazard Viewer is intended for planning use only and is not intended to be site-specific. Rather, it depicts general risks within the neighborhoods and the relative risks from community to community.

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The idea for this map came from Geology. Salton Sea. Is your house near the San Andreas fault? Taking steps now will give you confidence that you and your family are prepared to stay safe! In Palmdale , a portion of the fault is easily examined at a roadcut for the Antelope Valley Freeway. In this computer simulation constructed through a collaborative effort between the United States Geological Survey and the Southern California Earthquake Center , the magnitude 7. These mountains are a result of movement along the San Andreas Fault and are commonly called the Transverse Range. In this region known as the Salton Trough , the plate boundary has been rifting and pulling apart, creating a new mid-ocean ridge that is an extension of the Gulf of California. Shasta Cascade. Annual Review of Earth and Planetary Sciences.

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The San Andreas Fault System has been the subject of a flood of studies. Wikimedia Commons. This may explain the abnormally long period of time since the last major earthquake in the region since the lake has dried up. It was formed by a transform boundary. A paper, studying past earthquakes along the Pacific coastal zone, found a correlation in time between seismic events on the northern San Andreas Fault and the southern part of the Cascadia subduction zone which stretches from Vancouver Island to northern California. Colorado River Valley. Bibcode : GeoJI. Large earthquakes will occur along the San Andreas fault system —the major geologic boundary between the North American and Pacific tectonic plates —which traverses much of the State of California. The lake was created from an extensional step over in the fault, which created a natural depression where water could settle. Large-scale hundreds of miles lateral movement along the fault was first proposed in a paper by geologists Mason Hill and Thomas Dibblee. Germany Israel United States. The San Andreas fault line formed about 30 million years ago as the North American plate engulfed nearly all of the Farallon plate.