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
- North Latitude: 48° 9' 2" N (48.1505)
- South Latitude: 43° 15' 50" N (43.2639)
- East Longitude: 103° 13' 49" W (-103.2302)
- West Longitude: 104° 3' 29" W (-104.0581)
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* Names and boundaries are not necessarily authoritative, and are provided here solely for general orientation.