Luzon
The island of Luzon is bisected by the braided N-S trending Philippine Fault System. Luzon is not bisected E-W, and illustrations showing anything similar are erroneous. Northern Luzon is integral with southern Luzon. Any suggestion that Northern Luzon is not part of the Philippine Mobile Belt is not borne out by the detailed fault mapping of Pinet and Stephan (1989), and others. A common tectonic plate illustration for the Philippines is incorrect in this regard.
Read more about this topic: Geology Of The Philippines