Vesicles are ________.
A) cavities or bubble-shaped holes formed in lavas or pyroclastics by escaping gases during quenching
B) empty pits where large crystals like phenocrysts weathered out during exposure
C) holes that used to be full of hot liquid water when the rocks erupted
D) the sex organs of fossilized creatures that once lived in the molten magma
Correct Answer:
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Q51: Which of the following best describes an
Q52: Match the description with the appropriate texture.
-_
Q53: Name the texture that requires a magnifying
Q54: A(n)_ texture would be most unlikely to
Q55: Which igneous texture indicates two, distinctly different
Q57: Which of the following are used for
Q58: The main factors which directly govern the
Q59: Light coloured aphanitic rocks _.
A)always form deep
Q60: In what texture are mineral grains of
Q61: Which of the following igneous rock always
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