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Roland Duer Irving

    Observations On the Junction Between the Eastern Sandstone and the Keweenaw Series On Keweenaw Point, Lake Superior
    Monographs of the United States Geological Survey. The Copper-bearing Rocks of Lake Superior
    The Greenstone Schist Areas of the Menominee and Marquette Regions of Michigan: A Contribution to the Subject of Dynamic Metamorphism in Eruptive Rock