What did the earliest continental crust resemble?
A) foreland and intracratonic basins with mature quartz- rich sandstones
B) giant protocontinents of silica- rich magmas formed from the early differentiation of Earth into crust, mantle, and core
C) basaltic rift zones like East Africa
D) andesitic island arcs like the Aleutians
Correct Answer:
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Q6: Mountains without active volcanic arcs are associated
Q7: The _of the Appalachian orogen consists of
Q8: Compared to normal continental crust in the
Q9: How were the Ural Mountains (Russia) formed?
A)
Q10: What happens as the crust isostatically rises
Q12: When a subduction zone is established under
Q13: Mountain belts formed from folded marine sediments
Q14: A(n)_ is a thick accumulation of sediments
Q15: What is the evidence that the interior
Q16: Which statement best describes an intracratonic basin?
A)
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