If a body of igneous (source)rock is subjected to partial melting,the magma that is produced is expected to be ____________.
A)identical in chemical composition to the source rock
B)more mafic than the source rock
C)more felsic than the source rock

Question

Quizplus · Accepted Answer

When partial melting occurs, the magma produced is generally more felsic (rich in silica) than the source rock. This is because minerals rich in silica have lower melting temperatures and are preferentially melted first. Therefore, the remaining rock becomes enriched in minerals with higher melting temperatures, resulting in a more felsic magma.

If a Body of Igneous (Source)rock Is Subjected to Partial