Philippines Fault Lines and Trenches

This is the map of the fault lines and trenches in the Philippines.

Fault is a planar fracture in a volume of rock, across which there has been significant displacement along the fractures as a result of earth movement. This earth movement is what we called tectonic forces that compress the land.

Example of a fault line is the San Andreas fault in the Carrizo Plain, Central California, USA which can be seen in the photo below.

San Andreas fault aerial view


Faults in the Philippines

In the Philippines, the main fault runs most of the length of the country. This is called the Philippine fault. It extends from Bangui, Ilocos Norte in the north, crosses Zambales, Digdig, Central Marinduque, and traverses Central Leyte province and up to Mati.

In northwest Luzon, the fault has become braided or composed of many strands and is no longer single. The Philippine Fault, probably active since the Middle Miocene is a recent example of the north-south strike-slip fault zones of Luzon.

Following the major 1990 Luzon earthquake, scientists reconsidered their fault models and following the lead of Pinet and Stephan (1989), thought it likely that Benham Plateau is still displacing central Luzon and the Philippine Fault System to the west, and so caused the 1990 Luzon earthquake. The 20 second or 50 second wave in the 1990 quake developed a new east-west sub-fault, which terminated disastrously at Baguio.



Map of Faults and Trenches in the Philippines

List of Faults in the Philippines

1. Bangui Fault
2. West Ilocos Fault System
3. Dummon River Fault Sytem
4. Abra River Fault
5. Divalacan Fault
6. Tubao Fault
7. Casiguran Fault
8. East Zamabales Fault
9. Iba Fault
10. Digdig Fault
11. Infanta Fault
12. Guinyangan Fault
13. Valley Fault System
14. Central Marinduque Fault
15. Lubang Fault
16. Sibuyan Fault
17. Central Mindoro Fault
18. Aglubang River Fault
19. Lake Bato Lineament
20. Southern Mindoro Fault
21. Northern Samar Lineament
22. Tablas Fault
23. Masbate Fault
24. Southern Samar Lineament
25. West Panay Fault
26. Central Negros Fault
27. Cebu Linemanet
28. Central Leyte Fault
29. East Bohol Fault
30. Cabanglasan Fault
31. Tagoloan River Fault
32. Lanao Fault System
33. Davao River Fault
34. Lianga Fault
35. Eastern Mindanao Fault
36. Central Mindanao Fault
37. Mati Fault
38. Tangbulan Fault
39. Mindanao Fault Daguma Extension
40. Zamboanga Fault System
    

Trenches in the Philippines

The Philippine Trench (also called Philippine Deep, Mindanao Trench, and Mindanao Deep) is an underwater trench to the east of the Philippines. It has a length of approximately 1,320 km (820 mi) and a width of about 30 km (19 mi) from the centre of the Philippine island of Luzon trending southeast to the northern Maluku island of Halmahera in Indonesia. Its deepest point, the Galathea Depth, has a depth of 10,540 metres (5,760 fathoms; 34,600 feet). Before 1951, when an expedition of HMS Challenger measured a depth of 10,863 metres (5,940 fathoms; 35,640 feet) in the Mariana Trench, the Galathea Depth was the greatest known ocean depth. Now, it's the deepest point in the country and the 3rd in the world.

Immediately to the north of the Philippine Trench is the East Luzon Trench. They are separated, with their continuity interrupted and displaced, by Benham Plateau on the Philippine Sea Plate.

The Philippine Trench is the result of a collision of tectonic plates. The Philippine Sea Plate is subducting under the Philippine Mobile Belt at the rate of about 16 cm (6.3 in) per year.

List of Trenches in the Philippines

1. East Luzon Trench/Trough
   
2. Manila Trench
   
3. Negros Trench
4. Sulu Trench
5. Cotabato Trench
6. Philippine Trench

Is your place located along the fault lines? What's your plan if the fault will move or if an earthquake will hit your place and destroy your home?

- https://www.affordablecebu.com/