Abstract:The formation of large granitic domes mantled by metamorphic supracrustal rocks ("greenstones") is a hallmark of Paleoarchean crust (e.g., Hickman, 1984;Ramsay, 1989). Together, they define a "dome-and-keel" architecture, observed in many Paleoarchean to Mesoarchean terranes. Dome-and-keel terranes are thought to record a distinct mode of continental construction on Earth that seeded the growth of continental crust in the Mesoarchean and Neoarchean (Dhuime et al., 2012;Van Kranendonk, 2011). Yet the origin of … Show more
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