The convergence is what makes the orogenic belts exist, as it is the process that forms them. The convergence is basically two plates moving toward one another, colliding, and either pressing against one another, or one is subducting below the other. The orogenic belts start to develop as the crust is lifted upwards because of the immense pressure from the collision of the plates. As the crust is pushed upwards more and more, eventually a mountain range or ranges are formed. The orogenic belts are always located in close proximity to a plate boundary. Example of orogenic belt is the formation of the Himalayas, as well as the Alps, Andes, Cascades etc.
