If one were to consider the average thickness of oceanic and continental crust under mountain,the thickness ranges from approximately
A)5 km to 70 km (3 mi.to 43 mi. ).
B)70 km to 250 km (43 mi.to 155 mi. ).
C)250 km to 1000 km (155 mi.to 621 mi. ).
D)1000 km to 2000 km (621 to 1243 mi. ).
E)2000 km to 2900 km (1243 mi to 1802 mi. ).

Question

Quizplus · Accepted Answer

The average thickness of oceanic crust is about 5-10 km (3-6 mi.) and continental crust is about 30-70 km (19-43 mi.). Mountains can have crust that is thicker than average, but it still falls within this range. Therefore, the correct choice is A.

If One Were to Consider the Average Thickness of Oceanic