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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] Some notable Philippine faults include the Guinayangan, Masbate and Leyte faults.
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 ...
PHIVOLCS Observatory at Mount Hibok-Hibok.. The Philippine Institute of Volcanology and Seismology (PHIVOLCS, Tagalog:; Tagalog: Surian ng Pilipinas sa Bulkanolohiya at Sismolohiya [2]) is a Philippine national institution dedicated to provide information on the activities of volcanoes, earthquakes, and tsunamis, as well as other specialized information and services primarily for the ...
The Philippine archipelago is also cut along its length by a left-lateral strike-slip fault known as the Philippine Fault. [ 5 ] [ 1 ] Active subduction disturbs the Earth's crust , leading to volcanic activity , earthquakes , and tsunamis , making the Philippines one of the most geologically hazard-prone regions on Earth.
Another model suggests that the corridor is a pull-apart zone formed by the interaction of the Philippine Fault and the Sibuyan-Verde Passage Fault. [3] The Macolod Corridor is an important geological feature for several reasons. First, it is a zone of active volcanism, which poses a significant hazard to the surrounding population.
On Luzon, the fault zone splays out into a number of different faults, including the Digdig Fault. One of the largest historical earthquake on the fault zone was the 1990 Luzon M s 7.8 event that left nearly 2,000 people dead or missing. The same part of the fault zone is thought to have ruptured in the 1645 Luzon earthquake. [7]
The North Bohol Fault or Inabanga fault is a reverse fault located at Anonang, Inabanga which was found on 15 October 2013 during the Bohol earthquake. According to the Philippine Institute of Volcanology and Seismology, a new fault occurs only once in a century. The North Bohol fault, shaped as a hanging wall and also known as the "Great Wall ...
The earthquake came from an area that produced a similar sequence of earthquakes in October 2019 and December 2019 [citation needed], within an active faulting zone known as the Cotabato fault system, which includes the NW-SE trending Makilala-Malungon, M'lang, North and South Columbio and Tangbulan faults, and the SW-NE trending Makilala and ...