The process of assimilation partly explains why felsic intrusive rocks are much more common than mafic intrusive rocks.

Question

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During assimilation, mafic magmas tend to be more easily melted and assimilated by the surrounding felsic country rock. This results in the formation of more felsic intrusive rocks and less mafic intrusive rocks. Therefore, felsic intrusive rocks are much more common than mafic intrusive rocks.

The Process of Assimilation Partly Explains Why Felsic Intrusive Rocks