Multiple Choice
Large crystals found in a fine-grained groundmass can indicate a(n) ____.
A) origin from a magma with an early intrusive phase followed by an extrusive phase
B) origin from a magma with an early extrusive phase followed by an intrusive phase
C) rock of mixed volcanic-plutonic origin
D) intrusive slow cooling process
E) origin from a magma with an early intrusive cooling phase followed by an extrusive cooling phase
Correct Answer:

Verified
Correct Answer:
Verified
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