${session.getAttribute("locale")} 5 Hadean greenstones and the origin of the Earth's early continental crust 30 %), the relative concentrations of most incompatible elements in the melts are similar to those in their greenstone and bonninite parent rocks. Thus many of the incompatible element characteristics of TTGs may have been inherited from previously fractionated source rocks that already possessed similar characteristics. If this was true, early continental crust production may have been closely associated with some form of crustal re-cycling that duplicated many of the magmatic consequences of modern plate tectonics.]]> Thu 09 Feb 2017 02:56:59 AEDT ]]>