Do mountains actually grow taller during specific tectonic cycles?

Question

Accepted Answer

The Dynamic Life of Mountains

Mountains are not static monoliths; they are active, evolving features of the Earth's crust. Yes, mountains do grow taller through specific tectonic cycles, driven by the constant movement of massive lithospheric plates. When two tectonic plates collide, the resulting pressure forces the crust upward in a process known as orogeny.

How Growth Occurs

Plate Convergence: As plates crash, the Earth's crust thickens and folds, pushing peaks higher into the atmosphere.
   Isostatic Rebound: Even as erosion removes material, the Earth's mantle pushes the range upward to maintain equilibrium, similar to an iceberg rising after weight is removed.
   Deep-Seated Activity: Magmatic intrusions can inflate the interior of a mountain range, contributing to significant vertical gain over millions of years.

A Constant Tug-of-War

While tectonic forces relentlessly build mountains upward, erosion acts as the primary antagonist. Wind, water, and ice constantly shave off rock layers. A mountain's visible height is essentially a spectacular compromise between the upward thrust of geological forces and the downward pull of weathering. This endless cycle ensures that mountains remain vibrant, living structures of the planetary landscape.