Due to fractional crystallization and assimilation of surrounding host rock,most magmas that rise slowly through the crust chemically evolve to become ________.
A)more felsic
B)more mafic
C)dominated by nonsilicate minerals
D)increasingly dense

Question

Quizplus · Accepted Answer

Fractional crystallization and assimilation typically cause mafic magmas to become more felsic as they evolve chemically through the crust. This is because the more mafic minerals tend to crystallize out first, leaving the remaining magma enriched in more felsic components.

Due to Fractional Crystallization and Assimilation of Surrounding Host Rock,most