The high seismic risk posed by this fault zone requires a largescale active faults map, a fundamental data set for seismic hazard mitigation. For the most uptodate information, please refer to the interactive fault map. The west valley fault zone is separate from, but related to the wasatch fault zone, which is the regions preeminent fault and lies at the base of the wasatch range. I am curious but i cant find any exact location published, like specific residential areas. Quaternary fault and fold database of the united states. Jul 11, 2014 the west and east valley fault system span from angat, bulacan all the way down to carmona, cavite and calamba, laguna and is the most feared event that could hit metro manila in case the fault system moves as it may cause larger than 7. Geological survey water resources investigations report 004212, 119 p. Philippine fault zone maps philippine institute of. The philippine institute of volcanology and seismology phivolcs launched an application or tool, aiming to help its users to check if their homes can are located in the fault areas, which has a greater. It is believed to be the northern extension of the calaveras fault in the east bay region. Phivolcs launch map, valley fault system to guide users. Valley fault system vfs in the philippines, is a dominantly dextral strikeslip fault system that extends from dingalan, aurora in the north and runs through the cities of quezon, marikina. Click on the map type and select either park tiles or brochure. The west valley college campus occupies 143 acres in the city of saratoga.
Additional information on the link between the west valley fault zone and salt lake city segment of the wasatch fault zone can be found in ugs special study 149, paleoseismology of utah, volume 24evaluating surface faulting chronologies of grabenbounding faults in salt lake valley, utahnew paleoseismic data from the salt lake city. Manila metro rail transit system line 7 mrtline 7 update. The interactive map is based on trace from the phivolcs risk analysis map released on june 20. To think, the muchanticipated movement of the west valley fault is long overdue, and phivolcs now is not discounting the 1754 scenario of violent eruption from happening. News headlines, radio and television announcements are already in place to let the people living in the vfs make the.
The west and east valley fault system span from angat, bulacan all the way down to carmona, cavite and calamba, laguna and is the most feared event that could hit metro manila in case the fault system moves as it may cause larger than 7. Taal volcano lies on the west valley fault secrets of the. It is one of the service agencies of the department of science and technology. East segment the eastern segment, known as east valley fault evf moves in an oblique dextral motion. Its greatest recorded eruption occurred in 1754, while the last time the dreaded west valley fault moved was in 1658, which set the two events 96 years apart. The city of simi valley occupies the 22square mile simi valley. I was suppose to offer the property to a client, but decided to first check the location of the property with the phivolcs valley fault system maps just to make sure the property doesnt straddle on an earthquake fault line.
Taal volcano lies on the west valley fault secrets of. West valley fault running through bulacan, rizal, metro manila, cavite, and laguna. Interactive risk analysis map of the valley fault system. Base map pdf street map and parcel lines general plan map high resolution pdf west valley city boundaries jpg zoning map pdf. The map of this report is divided into two areas for the purpose of discussion, the northern gallatin valley, north of the gallatin river, and the western gallatin valley, which is the remainder of the map fig. The west napa fault is a 57 km 35 mi long geologic fault in napa county, in the north bay region of the san francisco bay area in northern california. Geology of southwest idaho bureau of land management. This is an official map and data, as such it is the most reliable information we have. It extends from dona remedios trinidad, bulacan in the north and runs through the provinces of rizal, and the metro manila cities of quezon, marikina, pasig, makati, taguig and muntinlupa, and the provinces of cavite and laguna that ends in. This new mapping provides additional data to scientists studying how the west valley and wasatch fault zones are linked, stated map author adam mckean. The valley fault system atlas office of civil defense. The fault is made up of ten segments, five of which are considered active. Although the current understanding of the wasatch fault zone is incom plete, this map should help identify key sites for further detailed studies of the faults history. The wasatch fault zone in utah valley has been the sub ject of many geologic studies for example, hunt and others.
The evidence in the trenches suggests that each of the four earthquakes on the west valley fault system was strong enough to break the ground. Jul 17, 2015 detailed map of west valley fault line. The west valley fault zone is actually comprised of a dozen different fractures that lie roughly between redwood road and 5600 west, and about 1700 north to 4800 south. If you are using ie 8 or later, make sure you turn off compatibility view. Pasig city has its own share of this geological anomaly being part of the west valley fault line. Streets maintenance west valley city, ut official site.
As of january 12, 2017, the usgs maintains a limited number of metadata fields that characterize the quaternary faults and folds of the united states. The earths crust was pulled apart and became thin, much like the stretching of taffy, and the mountains rose along the fault lines bordering the valley. Aug 31, 2015 teaser of the movie project the west valley fault. I was suppose to offer the property to a client, but decided to first check the location of the property with the phivolcsvalley fault system maps just to make sure the property doesnt straddle on an earthquake fault line. The phivolcs faultfinder map displays all the different faults located in the philippines, in particular, the valley fault system or vfs formerly known by its inaccurate label marikina fault line. Geologic map of the helena valley, westcentral montana. Although there are distinct similarities between the lithostratigraphic units in the northern gallatin valley and those in the. Archived report descriptions no longer maintained west valley fault zone, granger section class a no. The vfs is an active fault system composed of two fault segments. The west segment, known as the west valley fault wvf is one of the two major fault segments of the valley fault system which runs through metro manila to the cities of marikina, quezon city, pasig, makati, taguig and muntinlupa and moves in a dominantly dextral strikeslip motion. The simi valley east and simi valley west quadrangles encompass simi valley, parts of little simi and tierra rejada valleys, as well as part of the santa susana mountains. Jan 23, 2020 its greatest recorded eruption occurred in 1754, while the last time the dreaded west valley fault moved was in 1658, which set the two events 96 years apart.
The map shown above can be changed between park tiles and brochure maps by using the drop down menu in the upper left hand corner of the map. For backcountry trip planning we recommend either the tom. Download the newly updated phivolcs west valley fault line. This new mapping provides additional data to scientists studying how the west valley and wasatch fault. Scientists discover west valley fault zone deseret news.
May 02, 2016 additional information on the link between the west valley fault zone and salt lake city segment of the wasatch fault zone can be found in ugs special study 149, paleoseismology of utah, volume 24evaluating surface faulting chronologies of grabenbounding faults in salt lake valley, utahnew paleoseismic data from the salt lake city. Mar 17, 2011 the west valley fault line or the marikina valley fault line traverses a number of residential areas in metro manila. The volcanology agency has previously warned the impending activity of the west valley fault. This web app is a product of the joint collaboration between the philippine institute of volcanology and seismology phivolcs, philippines and geological survey of japan gsj, japan. Earthquake hazard evaluation of the west valley fault zone. Death valley national park maps available from harpers ferry center. This fault roughly moves between 400600 years and the last earthquake in this fault was recorded on 1658 or 357 years ago.
At present, approximately 90% of onlandstretch of the pfz has been mapped. Map and data for quaternary faults in west texas and. The higherresolution copy is available for free download from the phivolcs website. Prepare for the big one dost makes valley fault atlas. Directors ruben maria soriquez paolo bertola special effects cgi paolo bertola editing ruben maria soriquez original soundtrack.
West valley fault line update, quezon city, philippines. Phivolcs launched a map or a valley fault system vfs atlas to help the individual to determine if their location is located in the fault. We have identified a total of ten 10 geometric and structural segment along the east marikina valley fault emvf and the west marikina valley fault wmvf from the recognition of morphotectonic. Pdf neotectonics of the marikina valley fault system. The philippine institute of volcanology and seismology phivolcs on monday released the valley fault system vfs atlas, a handbook of largescale maps showing in detail areas traversed by the valley fault system, otherwise known as the east and west valley quake faults. Skip to site map the igovphil project officially adopts the web content accessibility guidelines wcag 2. The valley fault system vfs atlas, a handbook of large scale maps showing in detail areas traversed by the valley fault system, was launched and distributed to local government officials at 9am.
Map and data for quaternary faults in west texas and adjacent parts of mexico edward w. Interactive map for the west and east valley fault line on. Launched on monday, may 18, the valley fault system atlas is a handbook with 33 map sheets of cities traversed by the east valley fault and west valley fault. My father told me our subdivision was developed on a fault line. Recent trench studies have shown that the west valley fault tends to rupture simultaneously with the wasatch fault, compounding issues such as liquefaction, landslides and flooding.
A rift is a large valley bordered by faults, or fractures in the earths crust. Phivolcs said in the last 1,400 years, the west valley fault had moved on an interval of every 400 to 600 years. Philippine west valley fault line maps are you safe. Phivolcs warns valley fault residents manila, philippines residents of metro manila and nearby provinces should prepare for the big one, a magnitude 7. As of the meantime, disaster resiliency assessors have been saying that the country. Phivolcs and gma news online have downloadable copy of the valley fault system atlas on scribd.
The west fault is capable of producing largescale earthquakes on its active phases with a magnitude of 7 or higher. The west valley fault line or the marikina valley fault line traverses a number of residential areas in metro manila. There is also a set of downloadable pdf files at the national disaster risk reduction and management council website. Bandibas of gsj with the cooperation of the research and development personnel of phivolcs. Map and data for quaternary faults in west texas and adjacent. Pdf neotectonics of the marikina valley fault system mvfs. Areas south of metro manila where the valley fault line traverses is not part of the study thus has not been included in the map. The last earthquake in the area occurred in 1658, or 357 years ago. Paleoseismic investigation of the taylorsville fault, west. The fault is about 240 miles 390 kilometres long, stretching from southern idaho, through northern utah, before terminating in central utah near the town of fayette. Valley fault system atlas launch for earthquake preparedness. The wasatch fault is an active fault located primarily on the western edge of the wasatch mountains in the u. May 12, 2018 the map shown above can be changed between park tiles and brochure maps by using the drop down menu in the upper left hand corner of the map. The philippine institute of volcanology and seismology has made public its updated and detailed maps that trace the 100kilometer west valley fault traversing parts of metro manila and the adjoining provinces of bulacan,laguna, rizal and cavite, writes dona z.
The marikina valley fault system, also known as the valley fault system vfs, is a dominantly dextral strikeslip fault system in luzon, philippines. Thus, the publication of the valley fault system vfs atlas, a handbook of largescale maps detailing the situs of the 100kilometerlong west valley and the 10ki ometerlong east val ey segments of the vfs in the metro luzon urban be tway super reg on, is a welcome and significant. Since 2003, kyoto university and phivolcsdost have been mapping the philippine fault. On the west end of salt lake valley is another fault zone called the west valley fault zone that spans 9 miles 16 km northnorthwest.
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