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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.
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.
Trends in use and production of barite. A geological summary of deposits. Outlook is favorable for discovery of new deposits to meet rising demand.
Issue identified as 1935 covers names used through Dec. 1935.