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Geologic structure-contours for the top of the Inyan Kara Formation in the Black Hills Area, South Dakota

Published by U.S. Geological Survey | Department of the Interior | Metadata Last Checked: January 27, 2026 | Last Modified: 2020-11-17T00:00:00Z
This data set represents geologic structure contours for the top of the Inyan Kara Group, Black Hills, South Dakota.

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