A pegmatite is a coarse-grained igneous rock that forms primarily because the melt
A) is water-rich.
B) cools very slowly.
C) cools at great depth.
D) cools under specific pressure conditions.
Correct Answer:
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Q26: A magma body with a _ volume
Q28: In the discontinuous series of Bowen's reaction
Q32: As compared to mafic igneous rocks,felsic igneous
Q33: Which of the following does not affect
Q34: A _ is an irregular or blob-shaped
Q34: Because of its physical properties,magma tends to
A)
Q36: As compared to coarse-grained igneous rocks,fine-grained igneous
Q37: Pumice and scoria are examples of glassy
Q38: What is a xenolith?
A) a sheet-like intrusion
Q57: What is a tuff? How does a
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