Active Faults & Trenches

Source: PHIVOLCS Active Faults and Trenches Map of the Philippines (2015) and related open-file reports. Geometries below are simplified for display.

NameTypeLengthRegionSlip rate
Philippine Fault Zonestrike-slip1200 kmLuzon → Eastern Visayas → Mindanao20–25 mm/yr
Valley Fault System (West & East Valley Faults)strike-slip100 kmMetro Manila, Rizal, Bulacan, Cavite, Laguna~3–5 mm/yr
Manila Trenchsubduction1000 kmWestern Luzon margin~50–80 convergence mm/yr
Philippine Trenchsubduction1320 kmEastern Philippine margin~50–70 convergence mm/yr
Cotabato Trenchsubduction300 kmSouthwestern Mindanao~30 mm/yr
Negros Trenchsubduction350 kmWestern Visayas (Negros, Panay)— mm/yr
Central Cebu Fault Systemstrike-slip100 kmCebu Island— mm/yr
North Bohol Faultthrust6 kmBohol— mm/yr
Lubang Faultstrike-slip220 kmVerde Island Passage, Mindoro, Batangas— mm/yr
East Luzon Troughtrench400 kmEastern Luzon offshore— mm/yr
Sulu Trenchsubduction250 kmSulu Sea— mm/yr
Digdig Fault (PFZ Central Luzon segment)strike-slip220 kmNueva Ecija, Nueva Vizcaya, Aurora~20 mm/yr
Guinayangan Fault (PFZ Bondoc segment)strike-slip180 kmQuezon, Camarines Norte~20 mm/yr
Masbate Fault (PFZ Masbate segment)strike-slip110 kmMasbate Island~25 mm/yr
Leyte Fault (PFZ Leyte segment)strike-slip270 kmLeyte, Southern Leyte~25–30 mm/yr
Mindanao Fault (PFZ Mindanao segment)strike-slip320 kmAgusan, Davao, Compostela Valley~25 mm/yr
Vigan–Aggao Faultstrike-slip150 kmIlocos Sur, Abra— mm/yr
Casiguran Faultthrust80 kmAurora— mm/yr
Tablas Lineamentstrike-slip200 kmRomblon, Sibuyan Sea— mm/yr
Mindoro Fault (Aglubang River Fault)strike-slip130 kmOriental Mindoro— mm/yr
Macolod Corridor Faultsstrike-slip80 kmBatangas, Laguna, Cavite— mm/yr