Fold mountains occur near convergent or compressional plate boundaries. Plate movement creates fold mountains as the plates move towards each other. This movement causes layers of sedimentary rock on the ocean floor to become wrinkled and folded. These mountains are found between two continental plates.

Oceanic Plate converging with a Continental plate. The Oceanic plate is thinner but more dense, so it goes under the less dense continental plate in a process called subduction. As the plates goes into the earth it pushed up the Continental crust and melts back into magma. This creates Volcanic Mountains.