what are the different faults found in the philippines
Philippine Fault System The Philippine Fault Zone (PFZ) extends 1200 km across the Philippine archipelago behind the convergent boundary of the Philippine Trench and the subduction of the Philippine Sea Plate.[3] This left-lateral strike-slip fault extends NW-SE (N30 – 40 W) accommodating the lateral oblique motion of the subducting Philippine Sea Plate with respect to the Philippine Trench.[4][3] It extends from Davao Gulf in the south, bisects the Caraga region at the Agusan River basin, crosses to Leyte and Masbate islands, and traverses Quezon province in eastern Luzon before passing through Nueva Ecija up to the Ilocos region in northwest Luzon. The northern and southern extensions of the PFZ are characterized by branching faults due to brittle terminations. These horsetail faults are indicative of the lateral propagation and further development of the PFZ. The fault’s current activity can be observed in Holocene sandstone outcrops on the Mati and Davao Oriental islands.[5] The fault experiences a slip rate of approximately 2-2.5 cm/year.[6]
Languages of the Philippines There are some 120 to 187[5] languages and dialects in the Philippines, depending on the method of classification.[6] Almost all are Malayo-Polynesian languages, whereas one, Chavacano, is a creole derived from Spanish, a Romance language. Two, English and Filipino, are official, while nineteen (as of 2017[update]) are official auxiliary languages.[4][7] Including second-language speakers, there are more speakers of Filipino than English in the Philippines.[8]