Which of the following regions below would you predict to have the thickest continental crust?

A. the Colorado Rockies and adjacent Great Plains
B. the East Coast because it is a passive margin
C. the area with thick sediments around the Mississippi River
D. the West Coast because it is close to the plate boundary
E. the Appalachian Mountains, the dominant range in the eastern U.S.


Answer: A

Environmental & Atmospheric Sciences

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