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The Marikina Valley fault system, also known as the Valley fault system (VFS), is a dominantly right-lateral strike-slip fault system in Luzon, Philippines. [2] It extends from Doña Remedios Trinidad, Bulacan in the north, running through the provinces of Rizal, the Metro Manila cities of Quezon, Marikina, Pasig, Taguig and Muntinlupa, and the provinces of Cavite and Laguna, before ending in ...
The Philippine fault system is a major inter-related system of geological faults throughout the whole of the Philippine Archipelago, [1] primarily caused by tectonic forces compressing the Philippines into what geophysicists call the Philippine Mobile Belt. [2]
The High area western part of the Barangay is the edge of the Guadalupe plateau where most of Quezon City lies while the lower area, the eastern side of Barangay lies at the west bank of the Marikina River. Lying directly on the Marikina fault line, Bagong Silangan is considered as a high risk area for earthquake. [1]
The main hazard comes from shallow fault sources, such as the Marikina Valley Fault System, but there is an important contribution to the overall hazard from the Manila subduction zone to the west and the potential for strong shaking from earthquakes originating the Philippines Trench to the east.
The drop in elevation along the eastern border of the city follows the length of the West Valley Fault. The geography of Quezon City is characterized by undulating terrain. The city is within the catchment area of five river systems – Marikina , Pasig , San Juan , Tullahan and Meycauayan – along with their creeks and tributaries with a ...
Valley fault system is the common name for fault systems in valleys and basins including: Marikina Valley fault system; Independence Valley fault system;
Studies conducted by the PHIVOLCS revealed that a large portion of C-5 is built on top of the West Valley Fault. A map of the fault line released on May 18, 2015, shows C-5 in Taguig beside the fault line. [9] The C-5 road is prone to liquefaction. [10]
The west segment of the Marikina Valley Fault System, the West Valley Fault (WVF) cuts through parts of Muntinlupa [27] and moves in a predominantly dextral strike-slip motion. [28] The West Valley Fault is capable of producing large scale earthquakes on its active phases with a magnitude of 7 or higher. [27]