Aa lava is different from pahoehoe lava because
A) it is more viscous
B) it has a more felsic or silicic composition
C) it is cooler
D) A and B
E) all of the above.
Correct Answer:
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Q16: The circum-Pacific belt of volcanoes is related
Q17: The distribution of active volcanoes is random.
Q18: The volcanic explosivity index quantifies the energy
Q19: Which of the following statements most accurately
Q20: An extinct volcano is one which
A) existed
Q22: The type of volcano that forms over
Q23: Composite volcanoes form from
A) intermediate or andesitic
Q24: Intermediate and felsic magmas usually arise where
A)
Q25: Volcanism occurs along which of the following?
Q26: Magmas with mafic compositions would most likely
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