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Redeoubt volcano is part of a volcanic arc that is partially an island arc and partially a continental arc.
you can find an island arc in the Philippines islands
Mount Fuji is a stratovolcano. However, its located at an island arc, Japan. Mount Fujis platonic environment is there for an island arc.
Volcanic island arc
and island arc is formed by undersea volcanoes. built over time, and island arc is made of basalt and melted rock from the mantle.