Gurmeet Singh posted an Question
November 01, 2020 • 21:29 pm 30 points
  • IIT JAM
  • Geology (GG)

Sir why the ans is not batholith?

Question: 15/60 In a chain of oceanic volcanic islands that increase in age away from the site of active volcanism, the active volcanism is assumed to occur above a subduction zone a granite batholith a Benioff zone 9 plume of molten rodk called a hot spot

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  • Owishi Sarkar Best Answer

    The answer should be hotspot as active volcanism always take place at the point on the tectonic plate directly above the hotspot. Batholiths are discordant intrusive bodies that are present deep below the surface of the Earth and may be emplaced at any place irrespective of the point of active volcanism.

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    but batholith are formed by accumulation of plumes.

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    Volcanic islands are formed by hotspots. Batholiths can be formed anywhere by cooling of huge magmatic body, they are not associated with plumes.

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    Sajan sarthak best-answer

    Granite batholith is a plutonic rock and forms beneath the surface . This is a case of hotspot plume activity at a fixed position and Pacific plate moves over it so it will have Chain if volcanic island.

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