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Volcanoes of Intra-Oceanic Arcs


Volcanoes in volcanic island arcs formed by subduction of an ocean plate under another ocean plate. These are mainly composed of calc-alkaline rocks and tholiitic rocks.

Volcanoes of intra-oceanic arcs

Volcanoes along volcanic fronts along boundaries between two oceanic plates. There are two intra-oceanic arcs: the Kuril arc and the Izu-Bonin-Mariana arc. The kuril arc is formed by subduction of the Pacific place under the North American plate, and the Izu-Bonin-Mariana arc under the Philippine sea plate. The volcanic fronts of intra-oceanic arcs are connected to that of the Honshu arc via triple points of three plates.

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