Which of the following processes could result in a felsic magma?
A) partial melting of an intermediate-composition source
B) partial melting of continental crust
C) formation and settling of mafic crystals in an intermediate magma
D) all of these

Question

Quizplus · Accepted Answer

All of the listed processes can lead to the formation of felsic magma. Partial melting of an intermediate-composition source or continental crust can directly produce felsic magma due to the lower melting point of felsic minerals. The formation and settling of mafic crystals in an intermediate magma can concentrate the remaining melt in silica, thus making it more felsic.

Which of the Following Processes Could Result in a Felsic