As compared to aphanitic igneous rocks,phaneritic rocks are ____________.
A) made of crystals big enough to see
B) made of crystals that can't be seen
C) more mafic
D) more felsic
Correct Answer:
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Q10: When magma crystallizes,_ are formed.
A)intrusive igneous rocks
B)extrusive
Q22: Pegmatites,which occur in dikes,are unusual among shallow
Q34: Stoping by magmas occurs when _.
A)pieces of
Q39: As compared to coarse-grained igneous rocks,all fine-grained
Q43: Large igneous provinces are formed by _,which
Q44: Why are igneous rocks important?
A) They provide
Q46: A famous example of hot-spot volcanism occurs
Q48: A volcanic island arc occurs at _.
A)
Q49: Volcanoes that do not occur along present
Q50: Vesicles is a term used mostly to
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