Why do you usually find volcanoes near subduction zones?

1 Answer
Sep 17, 2017

The oceanic crust is pushed under and melted at a subduction zone creating the magma that comes to the surface as a volcano.

Explanation:

At a subduction zone an oceanic crust is pushed under the continental crust. As the oceanic crust is pushed under the continental crust it is subjected to heat and pressure. The heat and pressure causes the crust to melt and become magma.

The pressure causes the magma to be pushed toward the surface. When the magma reaches the surface it creates a volcano.