Deep Oxidation in the Canadian Shield

CIM Bulletin1938
DEEP oxidation and-secondary enrichment of ore deposits, although so important in many parts of the world, are comparatively rare in the Canadian shield. Intensive glaciation during the Pleistocene epoch accounts for their rarity. Glaciation has cost Canada much in the destruction of not only enriched ore deposits, but placers that must have been developed near our numerous gold deposits during the long period of weathering that preceded the Pleistocene.
Keywords: Canadian Shield, oxidation, Precambrian, pyrite, Superior Iron Ores, Iron, Mine, Mines, Ore, Ores, oxidation, Water, Waters
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