Abstract of article in Bol. Soc. Geol. It., Vol. Speciale no.5 (2005) Evidence suggests that processes at the outer core and/or D” layer release energy and buoyant masses that lead to formation of the oceanic depressions on the surface of the Earth. Such irregularly-distributed degassing would produce lateral physico-chemical variations in the mantle instigating changes … Continue reading Polar Wander and The Global Tectonics