what kind of fault is the hayward fault
Faults consist of two rock blocks that displace each other during an earthquake or regular tectonic movement. 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. Between the San Andreas Fault and the Calaveras Fault lies the Hayward Fault, which diverges from the Calaveras Fault east of San Jose, California. The first is its location in the urban heart of the Bay Area. How does the COVID-19 vaccine get to a hospital near you? The USGS map of the fault trace shows the specific features of the fault here. 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 Zone is a geologic fault zone capable of generating destructive earthquakes.This fault is about 74 mi (119 km) long, situated mainly along the western base of the hills on the east side of San Francisco Bay.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 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 … This fault is about 74 mi (119 km) long, situated mainly along the western base of the hills on the east side of San Francisco Bay. Nearly all transform faults are in the deep sea, but the major ones on land are noteworthy and dangerous, such as … ... What type of plate boundary is closest to it? Picture via USGS. What is likely to be the effect on the East Bay when it ruptures? Faults may range in length from a few millimeters to thousands of kilometers. Major active faults such as the Hayward Fault are associated with many hazards. A section of sidewalk in Hayward that showed the movement of the Hayward Fault was 'fixed' by the city, much to the dismay of geologists. The Hayward Fault is a strike-slip fault on the surface but changes to a low angle thrust fault as it descends under the Easy Bay Hills. Technically speaking, the Hayward is a right-lateral strike-slip fault. 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. 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. per year (about how fast your fingernails grow). SAN FRANCISCO (KGO) -- While the San Andreas fault gets much of the attention after the devastating 1906 and 1989 quakes, it's the Hayward fault, which runs along the East Bay, that quake experts consider the most dangerous fault in America. convergent. This event marked the end of a period of severely reduced creep on the southern part of the fault that began after the 1989 Loma Prieta, California, earthquake. The Hayward Fault is a Strike-slip Fault. Are you, your family, and your business prepared to outsmart disaster? ... the site’s distance from the fault, and the type of geologic material at the site. The San Andreas Fault system forms the boundary between the North American and the Pacific tectonic plates. But at its northern end, at Point Pinole Regional Shoreline, the fault can be walked and traced across open land with trees and grass. This movement causes stress, which results in earthquakes. 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. The last major earthquake on the Hayward Fault, with magnitude 6.5-7.0, occurred on October 21, 1868. On April 15, 2006, Drs. The most obvious hazard is that of large earthquakes, which induce ground shaking over a large area that can cause heavy objects to fall and windows to shatter, and can cause structural damage to buildings and bridges. 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). That is, the slip … 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. The Hayward fault, for instance, moves at a rate of about 0.2 in. It splays to the east and trends between N. 20° and 35°W along some 119 km. Soft, water saturated sands and sediments amplify shaking even at great distances from an earthquake, while bedrock shakes to a much lesser extent. (Play Video), Cooperative Institute for Deep Earth Research (CIDER), Northern California Earthquake Data Center (NCEDC), Official Maps of Earthquake Fault Zones throughout California, Official Seismic Hazard Zone Maps throughout California. Locate the Hayward fault. ... What type of plate boundary is closest to it? Click for more detail. You’ll see things marked in the area just south of the zoo, a length of the fault labeled “G1, sl” and a dotted oval marked “G1, df.” G1 means a geomorphic feature (a landform) of “strongly pronounced” character, the most clear-cut kind of evidence. Copyright © 2020 KGO-TV. Locate the Hayward fault. The most dangerous fault in the Bay Area is, as of now, due to fail at any time. Parts of a Fault. To share this video via email, copy and paste the message and URL below into your favorite email client and send. The Hayward fault threatens a lot of people and structures as it runs straight through the East Bay. Damage in San Francisco from the 1989 Loma Prieta earthquake. A fault is a fracture or zone of fractures between two blocks of rock. 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. 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. Understanding the parts of a fault can help you identify what type of fault you’re seeing. Most faults produce repeated displacements over geologic 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). NCGS Commemorates the 1906 Great Earthquake by Walking…the Hayward Fault! In addition, there are numerous documents on the State of California's Department of Conservation website that give lots of useful information. Posted April 19, 2018, under Blog. Faults allow the blocks to move relative to each other. New Study Finds Hayward Fault More Dangerous Than San Andreas. 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. What is likely to be the effect on the East Bay when it ruptures? An example of a dip-slip or transform fault is the San Andreas fault in California. All Rights Reserved. convergent. 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 … Think: Have any Mw 9 quakes occurred on any other type of plate boundary? The Hayward Fault has ruptured about every 140 years for its previous five large 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. COVID-19 holiday risk: The safest and most dangerous activities, Bay Area Life; Sundays at 6:30 p.m. on ABC7, 'The Earthquake Effect' provides in-depth coverage on Bay Area's readiness for the next major earthquake, The catastrophic fall and slow rise of the Bay Bridge after Loma Prieta, Scientists call San Francisco Bay Area 'Tectonic Time Bomb', MAP: Significant San Francisco Bay Area fault lines and strong earthquakes, From the Archives: ABC7's Peabody Award winning coverage of 1989 Loma Prieta Earthquake, What to pack in your earthquake emergency kit, Prepare NorCal: Disaster Preparedness Resources, Pet preparedness: How to keep your furry babies safe during a disaster or emergency, Most powerful earthquakes in California history above 7.0 magnitude, Earthquake scale: How they are measured and what the magnitude and intensity scales mean, What is an earthquake? The Hayward Fault is a strike-slip fault on the surface but changes to a low angle thrust fault as it descends under the Easy Bay Hills. Different faults in the Bay Area and the probabilities for each one producing a magnitude 6.7 or greater earthquake. In 1996, an 18-millimeter creep event, the largest ever observed on the Hayward fault, occurred between surveys 63 days apart. The Hayward Fault splinters from the Calaveras Fault, which itself is an offshoot of the The northern segment of the Hayward Fault stretches between San Pablo Bay and southern Oakland, and if that segment alone should break, then … The largest earthquakes recorded on the San Andreas fault include the 1906 San Francisco earthquake (approximately magnitude 7.8) and the 1989 Loma Prieta earthquake … With the last strong earthquake in 1868 and more than a dozen pipelines already To the east lies the Clayton-Marsh Creek-Greenville Fault. A fault’s length is related to the maximum strength of an earthquake it can produce. The Hayward Fault Zone is a geologic fault zone capable of generating destructive earthquakes. This is what happens when the ground starts to shake. 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. The Hayward fault is a transform or strike-slip fault that moves sideways, rather than the more common faults that move up on one side and down on the other. One block is called the hanging wall, and the other is the footwall. 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 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. 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