Subduction with arrested volcanism: Compressional regime in volcanic arc gap formation along east Mindanao, Philippines

Abstract The eastern portion of the Philippine island arc system, from the Bicol Peninsula through Leyte island to the Pacific Cordillera of east Mindanao, is the overriding plate underneath which the West Philippine Basin (part of the Philippine Sea Plate) and Palau Basin oceanic plates subduct along the Miocene-Pliocene to present-day Philippine Trench. Southward younging of the trench, coupled with the presence of the left-lateral Philippine Fault Zone parallel to it, is recognized. Young volcanic centers (