 Date: 2010-09-10 13:48:38Economy of Alaska Admiralty mining district Gold mining in Alaska Silver mining in the United States Terranes Volcanogenic massive sulfide ore deposit Abyssal plains Permian–Triassic extinction event Wrangellia Terrane Geology Mining in the United States Historical geology | |  Microfossil and Radioisotopic Geochronological Studies of the Greens Creek Host Rocks By Wayne R. Premo, Cliff D. Taylor, Lawrence W. Snee, and Anita G. Harris Chapter 11 of
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