What was Earth's tectonic style before Plate Tectonics?

Patrice F Rey, University of Sydney, School of Geosciences, Earthbyte Research Group, Sydney, NSW, Australia, Nicolas Coltice, LGLTPE Laboratoire de Géologie de Lyon : Terre, Planètes et Environnement, Villeurbanne Cedex, France and Nicolas E Flament, University of Wollongong, School of Earth, Life and Atmospheric Sciences, Wollongong, NSW, Australia