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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.
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 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. [4] [6]
Strike-slip deformation within the Philippine Mobile Belt occurs as a result of oblique subduction of the Philippine Sea plate, where the Philippine Fault System accommodates much of it. [5] The fault is seismically active and ruptures periodically in large earthquakes. Among the largest are the 1990 Luzon and 1973 Ragay Gulf earthquakes.
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 ...
PHIVOLCS cites seismic scale specifically developed for the Philippine setting, the different geography of each country and other "geological considerations" led to the development of PEIS. The scale measures the effect of an earthquake on a given area based on its relative effect to people, structures and objects in the surroundings.
It has erupted 16 times since 1885 and is considered as the 4th most active volcano in the Philippines after Mayon, Taal, and Kanlaon. There are evacuation procedures in place for parts of the peninsula, the farms nearest the volcano are evacuated, and many of the village schools are closed if it is considered possible that a more destructive ...
The 1645 Luzon earthquake was one of the most destructive earthquakes to hit the Philippines. It occurred on November 30 at about 08:00 PM local time on Luzon Island in the northern part of the country. The island was struck by a 7.5 M s tremor produced by the San Manuel and Gabaldon Faults (Nueva Ecija) in the central section of the island. [1]