A critical process at plate margins.

1. SUBDUCTION Oceanic Crust beneath Continental Crust Forming a range of coastal Volcanic Mountains

2. The Andes and the Cascades are 2 of the more well-known volcanic coastal mountain ranges...

3. SUBDUCTION Oceanic Crust beneath Oceanic Crust Forming an Arc of Volcanic Islands, or Island Arcs

4. Aleutian Islands of Alaska, and the island nation of Japan are examples of Island Arcs

5. The RING of FIRE is an area of Subduction Zones surrounding the Pacific Ocean where volcanoes numerous occur.