Choose the appropriate melting mechanism associated with the following environme

Question

Choose the appropriate melting mechanism associated with the following environments of igneous activity by putting one of the following letters in the four blanks below (note that not all of the mechanisms may be appropriate melting mechanisms): IC=injection of molten material from Earth's core =D decompression melting (decrease in pressure), T= temperature increase melting, F= fluid fluxed melting, S=Dissolving of solid rock in water, Upper Mantle beneath magmatic arcs______________ Upper Mantle beneath midocean ridge___________ Continental crust over hot spot__________________

Explanation / Answer

Upper Mantle beneath magmatic arcs - fluid fluxed melting

Upper Mantle beneath midocean ridge -  decompression melting

Continental crust over hot spot - injection of molten material from Earth's core

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