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A computer list of geologic names in use in the United States and the major elements necessary for their definition.
A proposal to adopt the top of the Copper Harbor Conglomerate as the base of the upper Keweenawan in the Lake Superior region.
Issue identified as 1935 covers names used through Dec. 1935.
Lithology, structure, and metamorphism of Narragansett basin sedimentary rocks of Pennsylvanian age, younger Westerly Granite, and underlying igneous and metamorphic rocks of early Paleozoic or Precambrian age.