Which of the following properly describes the formation of continental crust?
A) The formation of continental crust is independent of the formation of oceanic crust, involving only volcanism over the land masses.
B) New continental crust is formed essentially in the same many as oceanic crustfrom upwelling at mid-continental ridges.
C) All continental crust was formed millions of years ago. There is no active continental crust being formed.
D) The formation of continental crust involves the entire sequence of seafloor spreading, subduction, remelting of oceanic crust, and subsequent rise of the remelted material.
Question 2
The general term that describes subducted oceanic crusts that incorporate seawater and sediments is
A) sial. B) batholiths. C) sima. D) melt.
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