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Oceanic plate convergence creates island arcs like the Mariana Islands.
Ocean-Ocean Convergence:
When two oceanic plates collide, the older, denser plate subducts beneath the younger plate, creating a line of volcanoes known as an island arc. Examples include Japan, Indonesia, the Philippines, and the Aleutian Islands.
Volcanism Where Plates Collide:
In plate collisions, two types occur: ocean-continent and ocean-ocean. The subducted plate melts, and the magma rises, forming volcanoes. This process is responsible for creating the Mariana Islands in the western Pacific Ocean.
Formation of Island Arcs:
Island arcs are formed from volcanoes erupting through an overriding plate as a descending plate melts beneath it. The Mariana Islands exemplify this type of plate collision.
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