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Geography

How Volcanic Island Arc Systems Develop Through Plate Subduction

Quick fact

The Japan, Indonesian, and Philippine island arcs are all volcanic island arcs formed by subduction of oceanic plates beneath other oceanic plates.

Why this is interesting

You've probably seen the horseshoe-shaped 'Ring of Fire' on a map—but have you ever wondered why so many volcanoes form in long, curved chains out in the ocean?