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. | 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. |