Multiple Choice
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
Correct Answer:

Verified
Correct Answer:
Verified
Q19: Pillow basalts,shown below,attain their distinctive blob-like shapes
Q20: Very early in Earth's history,it was so
Q21: Pegmatites,which occur in dikes,are unusual among shallow
Q22: Consult the figure below.If you found tuff
Q24: The difference between lava and magma is
Q25: Vesicles are a term used to describe
Q26: If a body of magma becomes more
Q27: Consult the figure below.A dike is a(n)_.<br><img
Q30: In Bowen's discontinuous reaction series,the first mineral
Q46: Most commonly,felsic igneous rocks<br>A) contain more iron