Here's why:
* Plate Collision: When tectonic plates collide, they can push up the Earth's crust, creating fold mountains. This is the dominant force behind the formation of the Himalayas, Alps, and Andes, among others.
* Volcanic Mountains: These mountains are formed by the eruption of magma from the Earth's mantle. This magma, which is less dense than the surrounding rock, rises to the surface and erupts, building up layers of solidified lava and ash over time. This process is independent of plate collisions.
While plate collisions can sometimes trigger volcanic activity, the resulting mountains are formed primarily through volcanic eruptions, not the direct pressure of colliding plates.
