Convergent plate boundaries Volcano

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subduction zones places 2 plates, oceanic plate , continental plate, collide. in case, oceanic plate subducts, or submerges, under continental plate, forming deep ocean trench offshore. in process called flux melting, water released subducting plate lowers melting temperature of overlying mantle wedge, creating magma. magma tends extremely viscous because of high silica content, not attain surface cools , solidifies @ depth. when reach surface, however, volcano formed. typical examples mount etna , volcanoes in pacific ring of fire.







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