Dated rocks and zircon crystals suggest that granitic continental crust had formed by about __________ years ago.
A) 1.6 million
B) 4.4 million
C) 1.6 billion
D) 4.4 billion
Correct Answer:
Verified
Q35: _ is lava with a jagged, broken
Q36: Granitic magma contains up to _ percent
Q37: Which of the following processes causes melting
Q38: Gentle eruptions of basaltic lava from long
Q39: Pyroclastic bombs, cinders, and ash:
A) flow gently
Q41: A shield volcano commonly erupts when:
A) basaltic
Q42: Volcanic eruptions have no effect on global
Q43: Basaltic magma forms at the Mid-Oceanic Ridge.
Q44: Pahoehoe lava cools and stiffens as it
Q45: The gentlest, least catastrophic type of volcanic
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