Precambrian basement of the north Mid-Continent U.S.A.: a digital representation of the 1990 P.K. Sims map

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Description Geologic units, structural features, drill hole locations, and structure contours
Originators Dicken, Connie L., Pimley, Shana G., Cannon, William F.
Publication U.S. Geological Survey Open-File Report 01-21

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