Quote Originally Posted by rondog View Post
Uh, look at our mountains sometime. What do you think caused them to rise up? They weren't always "just there".
Unlike the mountains in CA, which were formed by one plate being forced under the other, the Rockies were formed by buckling in the center of a plate caused by pressure from both side. This buckling also puts the "hot liquid magma" closer to the surface. That's what Stewart's teacher was talking about.

Man, I watch way too much Discovery and History channels...