Mountains are supported by the mechanical strength present in the asthenosphere due to the presence of heavy elements such as iron and magnesium.

Question

Quizplus · Accepted Answer

Mountains use buoyancy to remain high. They float high above the sea level because the lithosphere sinks into the asthenosphere until it displaces the volume equal to the mass of the mountains. Information can be found in the section Earth's Inner Structure Was Gradually Revealed.

Mountains Are Supported by the Mechanical Strength Present in the Asthenosphere