Abstract
Plate tectonics is among the most important geological processes on Earth, but its emergence andevolution remain unclear. Here we extrapolate models of present-day plate tectonics to the past and propose that since about three billion years agothe rise of continents and the accumulation of sediments at continental edges and in trenches hasprovided lubrication for the stabilization of subduction and has been crucial in the developmentof plate tectonics on Earth. We conclude that the two largest surface erosion and subduction lubrication events occurred after the Palaeoproterozoic Huronian global glaciations (2.45 to 2.2 billion years ago), leading to the formation of the Columbia supercontinent, and after the Neoproterozoic 'snowball' Earth glaciations (0.75 to 0.63 billion years ago). The snowball Earth event followed the 'boring billion'-a period of reduced plate tectonic activity about 1.75 to 0.75 billion years agothat was probably caused by a shortfallof sediments in trenches-and it kick-started the modern episode of active plate tectonics.
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