Changes

There are different theories about the origin of mountains. The [[Tectonic Plate|tectonic plates]] theory speculates that some mountains rose out of the ground upon the collision of plates. These are called complex mountains, and example of which is the [[Himalayas]]. This theory cannot explain all mountains, however.  Other types of mountains, such as fault-block mountains, are a result of faults pushing sections of land up higher than the surrounding areas.  

There are different theories about the origin of mountains. The [[Tectonic Plate|tectonic plates]] theory speculates that some mountains rose out of the ground upon the collision of plates. These are called complex mountains, and example of which is the [[Himalayas]]. This theory cannot explain all mountains, however.  Other types of mountains, such as fault-block mountains, are a result of faults pushing sections of land up higher than the surrounding areas.  

Young mountains tend to be larger than older ones, due to erosional forces. One theory is that the rugged appearance of a mountain is caused by [[Glacier|glacial]] action, pinching the rock of the mountain into faces and horns. Mountains that are free form glaciers tend to be more rounded in appearance.

Young mountains tend to be larger than older ones, due to erosional forces. One theory is that the rugged appearance of a mountain is caused by [[Glacier|glacial]] action, pinching the rock of the mountain into faces and horns. Mountains that have been free from glaciers tend to be more rounded in appearance.

[[Category:Geology]]

[[Category:Geology]]