Archean terranes are important from an economic viewpoint because they host world-class Archean orogenic gold, paleoplacer gold, VHMS, komatiite-associated Ni-Cu, and enriched BIF iron ores; world-class post-Archean intrusion-related PGE-Ni-Cu, IOCG, and diamond deposits; and a variety of regolith-related deposits, such as bauxite, nickeliferous laterite, and beach sands. Many other ore provinces, such as Carlin and those containing most giant nickel districts, are sited adjacent to Archean cratonic margins. Archean terranes are also natural laboratories in which to answer some of the fundamental questions concerning processes that operated during the early evolution of our planet, when the first continental crust formed...
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