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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 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]
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 Sibuyan Sea Fault is a part of the Philippine Fault System, a major inter-related system of geological faults throughout the whole of the Philippine Archipelago. This fault system is primarily caused by tectonic forces compressing the Philippines into what geophysicists call the Philippine Mobile Belt. The Sibuyan Sea Fault is located ...
The Lubang-Verde Passage fault system is a major strike-slip fault system located offshore between the Batangas and Mindoro Island in the Philippines. [ 1 ] Background
The PTZ also displays blind thrust faults and folds (essentially buried folds and faults). It has been suggested that these thrust faults originated along preexisting normal faults. These blind thrust faults present potential danger as they are likely candidates for the causes of high-magnitude earthquakes, and in effect large-scale tsunamis. [18]
The Bohol fault system is a reverse fault system in Bohol province, Philippines. This fault system contains three segments: the newly found North Bohol Fault following the 2013 Bohol earthquake, [2] the South Offshore Fault, [3] and the East Bohol Fault. The North Bohol Fault is located in Inabanga and near Clarin.
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.