Which of the following processes influence changes in magma composition after in

Question

Which of the following processes influence changes in magma composition after initial partial melting (circle best answers (there may be more than one))?: (a) crystal fractionation; (b) mixing of the magma with sea water; (c) reaction of the magma with the atmosphere; (d) assimilation of adjacent continental crust; (e) mixing of sea water and the magma, (f) mixing of liquid outer core with magma Partial melting of the upper mantle results in initial ("primitive") melt that has the chemical composition of (circle best answer): (a) rhyolite; (b) peridotite; (c) basalt; (d) granite; (e) limestone Rocks are exhumed in the same environment they were deposited (circle best answer): (true or false).

Explanation / Answer

3) a, d

2) Basaltic

Since upper mantle sainly peridotite , partial melting g of peridotite leads to formation of basaltic magma

3) true

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