DISCUSSION: When and How did Plate Tectonics Begin, What Came Before, and Why is this Controversy important for Understanding the Earth and Exoplanets?

Robert J Stern, University of Texas at Dallas, Geosciences, Richardson, TX, United States, Taras Gerya, ETH Zurich, Department of Earth and Planetary Sciences, Zurich, Switzerland, Stephan V Sobolev, Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany and Paul Tackley, ETH Zurich, Zurich, Switzerland