This document summarizes the Wilson cycle, which describes the process of plate tectonics over geological time. It involves the opening and closing of oceans as continents drift apart and collide together due to lithosphere plate evolution. Key points of the Wilson cycle include: 1) Oceans initially open as continents rift apart along spreading ridges, forming new lithosphere. 2) As the oceans widen, continental shelves and ocean crust develop on either side. 3) Oceans eventually close as the lithosphere is subducted at consuming plate boundaries, bringing the continents back into collision and forming orogenic mountain belts. 4) The cycle then repeats itself over hundreds of millions of years, periodically assemb