National Geologic Map Database
General Information
- Title: Eastern margin of Black Hills, South Dakota and Williston basin North Dakota [columns]
- Author(s): Lewis, P.J., and Hadley, H.D.
- Publishing Organization: Geological Society of America
- Series and Number: Bulletin v. 68 no. 11 [p. 1451-1514, chart 8a]
- Larger Work: Reeside, J.B., Jr., chairperson, Correlation of the Triassic formations of North America, exclusive of Canada
- Publication Date: 1957
- Cross Section: None
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