Which of the following statements best describes the formation of secondary magmas?
A)Decompression melting creates a mafic magma from mantle material.
B)Iron-rich minerals will form in a cooling magma and leave the remaining melt with a more silicic composition.
C)Partial melting of felsic rocks creates a silica-rich magma.
D)Water dehydrating from a subducted plate will melt mantle material.

Question

Quizplus · Accepted Answer

As a magma cools, iron-rich minerals crystallize first, removing iron from the melt and leaving it enriched in silica, thus forming secondary magmas with a more silicic composition.

Which of the Following Statements Best Describes the Formation of Secondary