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Showing 1 to 1 of 1 for “"Alaska volcanic rock"”.
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The geology of the Khayyam and Stumble-On deposits, Prince of Wales Island, Alaska
… Ordovician Wales Group, a metamorphosed volcanic arc complex within the Alexander tectonostratigraphic terrain. These massive sulfide deposits are interbedded with schist layers of siliceous, felsic, intermediate and mafic composition from 1 m to 30 m thick. Within the study area, these …