Bicol Volcanic Arc

The Bicol Volcanic Arc (also called the Bicol Volcanic Chain) is a 260-kilometer-long volcanic arc located in the central-eastern margin of the Philippine Mobile Belt, specifically the Bicol Region. It is composed of at least 12 volcanic centers, four of which are considered active: Mayon Volcano, Bulusan Volcano, Iriga Volcano, and Isarog Volcano. The Bicol Arc is a product of the westward subduction of the Philippine Sea Plate along the Philippine Trench.

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