Presents evidence supporting Alfred Wegener's theory of continental drift. Explains plate tectonics and discusses what is known of the earth's crust and upper m

Arc-continent collision has been one of the important tectonic processes in the formation of mountain belts throughout geological time, and it continues to be s

The crash of the Indian plate into Asia is the biggest known collision in geological history, and it continues today. The result is the Himalaya and Karakoram -