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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 and runs through the provinces of Rizal, and the Metro Manila cities of Quezon, Marikina, Pasig, Taguig and Muntinlupa, and the provinces of Cavite and Laguna that ends in ...
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 fault follows the northwest-southeast alignment of Verde and Lubang islands and is primarily considered a left-lateral fault, meaning the two sides of the fault move horizontally past each other in opposite directions. This geological feature is associated with seismic activity, giving rise to earthquakes of varying magnitudes. Notably, on ...
Bohol Fault System is a reverse fault system in Bohol province, Philippines. This fault system contains 3 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, the South Offshore fault affects the ...
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 Manila Trench is an oceanic trench in the Pacific Ocean, located west of the islands of Luzon and Mindoro in the Philippines. The trench reaches a depth of about 5,400 metres (17,700 ft), [ 8 ] in contrast with the average depth of the South China Sea of about 1,500 metres (4,900 ft). It is created by subduction, in which the Sunda Plate ...
The event was a result of strike-slip movements along the Philippine Fault and the Digdig Fault within the Philippine Fault System. The earthquake's epicenter was near the town of Rizal, Nueva Ecija, northeast of Cabanatuan. [6] An estimated 1,621 people were killed, [7] [8] most of the fatalities located in Central Luzon and the Cordillera region.