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

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The felsic lava that produces the islands of Indonesia is derived from the melting of continental shelf material along with ocean floor material. This is due to the location of the islands adjacent to a subduction zone next to the edge of the continental shelf of SE Asia. As the subducting plate descends into the mantle, it drags along with it the overlying continental shelf material and ocean floor material. The heat and pressure created by the subduction process can melt this combination of materials, leading to the formation of felsic lava and the subsequent creation of volcanic islands. Options A, B, D, and E are not correct because they do not relate to the specific geologic setting of the Indonesian islands.

Many of the Islands of Indonesia (Java,Sumatra,Borneo),which Are Located Adjacent