The western United States has
A) low-density mantle that extends extraordinarily deep.
B) high-density mantle very close to the surface.
C) low-density mantle close to the surface.
D) high-density mantle that extends very deep.

Question

Quizplus · Accepted Answer

The Western United States is located on top of the low-density mantle that is close to the surface. This is significant because it results in a thinner and less dense lithosphere, which contributes to the formation of the Basin and Range Province, a distinct geographic region in the Western United States.

The Western United States Has