It is among the most active faults and seismologists warn it will likely be the source of the next "big one" in San Francisco-Bay Area. The most dangerous fault in the Bay Area is, as of now, due to fail at any time. Contributed by Dale Smith Photos by Phil Garbutt. convergent. Copyright © 2020 KGO-TV. San Francisco Bay Area Earthquakes: The Hayward and San Andreas Faults are probably the most studied earthquake faults in the world, so a lot is known about them. This movement causes stress, which results in earthquakes. It is among the most active faults and seismologists warn it will likely be the source of the next "big one" in San Francisco-Bay Area. The net effects of these are often more severe and more widespread than the damage directly caused by the shaking itself, and they complicate emergency response and clean-up.Faults, however, can also cause damage in much less noticeable and long term way through creep. Think: Have any Mw 9 quakes occurred on any other type of plate boundary? The Hayward Fault is a major earthquake fault that runs for nearly 45 miles (72 km) through the East Bay of the San Francisco Bay region. Locate the Hayward fault. ... What type of plate boundary is closest to it? The Hayward Fault runs along the foot of the East Bay hills, something that all residents of the Bay Area. The Hayward Fault is thought capable of generating a magnitude 7.5 quake. San Francisco Bay Area Earthquakes: The Hayward and San Andreas Faults are probably the most studied earthquake faults in the world, so a lot is known about them. To find out more about the potential hazards from an earthquake in the Bay Area, or about the specific area that you live in, the USGS has several great Google Earth maps that show: likeliness of a damaging earthquake, liquefaction likeliness, at risk areas, and potential hazards for our infrastructure. The cracking of the ground along the Hayward Fault was traced about 20 miles (32 km) from San Leandro to Warm Springs in Fremont, although modeling of survey data suggest that the fault moved as far north as Berkeley, and from these data the average amount of horizontal movement along the fault is inferred to be about 6 feet (1.9 meters). With the last strong earthquake in 1868 and more than a dozen pipelines already It contains a lot of information, links, and videos to explore and you will learn practically everything there is to know if you study this page. NCGS Commemorates the 1906 Great Earthquake by Walking…the Hayward Fault! per year (about how fast your fingernails grow). A fault is a fracture or zone of fractures between two blocks of rock. The Hayward Fault is a Strike-slip Fault. High disruption of structures, roads, and utilities. It suggests that either the fault is creeping there, or there has been recent seismic slip.” In fact, according to Watt et al., even the most recent prehistoric earthquakes along the Rodgers Creek fault and Hayward faults, which struck sometime between 1715 and 1776, could have been a single combined event given dating uncertainties. Think: Have any Mw 9 quakes occurred on any other type of plate boundary? A fault’s length is related to the maximum strength of an earthquake it can produce. In addition, there are numerous documents on the State of California's Department of Conservation website that give lots of useful information. The Hayward fault, for instance, moves at a rate of about 0.2 in. It runs through densely populated areas, including Richmond, El Cerrito, Berkeley, Oakland, San Leandro, Castro Valley, Hayward, Union City, Fremont, and San Jose. It is located within its central section, between the latitudes of San Jose and Bakersfield. Click for more detail. In order to better understand mechanisms of active faults, we studied relationships between fault behavior and rock units along the Hayward fault using a three-dimensional geologic map. High disruption of structures, roads, and utilities. convergent. The last major earthquake on the Hayward Fault, with magnitude 6.5-7.0, occurred on October 21, 1868. It is a member of the San Andreas Fault system that runs from the Gulf of California in the south, to Cape Mendocino in the north. The Hayward Fault is a major earthquake fault that runs for nearly 45 miles (72 km) through the East Bay of the San Francisco Bay region. It is a right-lateral strike-slip fault, meaning that motion along it is mainly horizontal, so that objects on the opposite side of the fault from the viewer will move to … All Rights Reserved. Strike-slip faults have walls that move sideways, not up or down. On April 15, 2006, Drs. Parts of a Fault. The Hayward fault is not our only fault. 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