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, United States, Taras Gerya, Geophysical Fluid Dynamics, Institute of Geophysics, ETH Zurich, Zurich, Switzerland, Stephan V. Sobolev, Deutsches GeoForschungsZentrum GFZ, Potsdam, Germany and Paul Tackley, ETH Zurich, Zurich, Switzerland
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