Perennial Plate Tectonics (2 of 2) (IMAGE) University of Toronto Caption The Wilson Cycle (or supercontinent cycle) showing some of the main features of plate tectonics. Additional plate tectonic processes (e.g., intraplate deformation, an example of mantle lithosphere deformation, and large low shear wave velocity provinces (LLSVPs)) lie outside the conventional realm of plate tectonics. Credit Russell Pysklywec, Philip Heron, Randell Stephenson Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.