Many of the islands of Indonesia (Java,Sumatra,Borneo) ,which are located adjacent to a subduction zone next to the edge of the continental shelf of SE Asia,consist of felsic lava.This means that the lava which produces these islands is derived from which of the following?
A) A midocean ridge.
B) A volcanic hot spot under the ocean floor.
C) The melting of continental shelf material along with ocean floor material.
D) The melting of subducted plate material and nothing else.
Correct Answer:
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