Mineralogically and chemically equivalent rocks are ___ and __.
A) granite; rhyolite
B) gabbro; basalt
C) diorite; andesite
D) mafic; ultramafic
E) intermediate; felsic
Correct Answer:
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Q20: An ultramafic rock is composed almost entirely
Q21: Ultramafic igneous rocks are composed almost entirely
Q22: Fine-grained igneous rocks (grains < 1.0 mm)
Q23: A useful tool illustrating the relationships among
Q24: _ is the predominant igneous rock of
Q26: Under ideal conditions rock can melt
Q27: _ igneous rocks, like gabbro and basalt,
Q28: Both andesite and _ are composed of
Q29: The geothermal gradient, on average, is
Q30: A _ is a tabular (thin but
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