Most mountains have not eroded to a flat plain over time because:
A) they are buried under a thin veneer of soil.
B) new mountains constantly emerge through rifts in the crustal material of oceans and continents.
C) ozone depletion has decreased the rate of erosion.
D) the mantle has a constant supply of granitic material
E) mountains are reformed by tectonic uplift that is greater than or equal to the erosional forces.

Question

Quizplus · Accepted Answer

Mountains are constantly subject to erosion, but they are also being uplifted by tectonic processes at rates that equal or exceed the rate of erosion. This keeps the mountains from eroding completely away and instead creates a balance between uplift and erosion which results in the formation of mountain ranges.

Most Mountains Have Not Eroded to a Flat Plain Over