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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 last known earthquake on the fault was in 1868, measuring 4.0–5.0 in magnitude. [11] The Abra River Fault is a northern extension of the Philippine Fault Zone. As it runs through Luzon, it splays into three branches that runs beneath the southern Sierra Madre mountains, the Central Cordillera Mountains before terminating at the northern ...
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]
English: Shakemap from USGS for the magnitude 6.4, maximum intensity 7.099 earthquake with tsunami near en:Usgs Neic Shakemap (en:Luzon, Philippines), 15.2 km depth. Date 25 October 2022, 14:59:01
The northern and southern extensions of the Philippine Fault Zone experience infrequent earthquakes and often described as locked segments which are capable of larger magnitude earthquakes. The largest (M7.0) and most destructive earthquakes are generated along the Guinayangan fault every 30–100 years with slip rates of 20–33 mm/year as ...
The most terrible earthquake recorded in the annals of the Archipelago. It might almost be said that from Manila to Cagayan and Ilocos Norte it left no stone upon the other. In the capital, where during the preceding fifty years a great number of stone buildings had been erected, magnificent churches, palaces, and public buildings, as well as ...
United States Geological Survey shake map for the 2019 Luzon earthquake; a maximum Mercalli intensity scale value of 6.6 was observed in Gutad, Floridablanca, Pampanga. The Philippine Institute of Volcanology and Seismology (PHIVOLCS) initially reported an earthquake of magnitude 5.7 striking at 17:11 PST with an epicenter two kilometers N 28° E of Castillejos, Zambales.
In between the two faults lie the Philippine Mobile Belt, a region the takes up most of the western regions of the Philippines. [3] It hosts multiple faults and active seismic blocks from southern Luzon to the Cotabato Trench. [4] The Cotabato Trench itself caused two earthquakes in 1918 (M w 8.3) and 1976 (M w 8.0). The last significant ...