Due to fractional crystallization and assimilation of surrounding host rock, most magmas that rise slowly through the crust chemically evolve to become .

More felsic

Explanation:

Felsic refers to silicate minerals, magma, and rocks which are enriched in the lighter elements such as silicon, oxygen, aluminium, sodium, and potassium. Felsic rocks are usually light in color and have specific gravities less than 3.

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