John Tuzo Wilson (24 October 1908 - 15 April 1993) was a
Canadian geophysicist and geologist. He was the world's leading
spokesman of the theory of continental drift. A mountain range in
Antarctica was named after him. He was the father of the theory of
plate tectonics (ie. the belief that the earth's crust is divided
into plates which are moving as a result of the forces of the
mantle beneath).