Geologic structure and altitude of the top of the Minnelusa Formation, northeastern Black Hills, South Dakota
Water-Resources Investigations Report
85-4233
By: Kathy D. Peter, David P. Kyllonen, and Kathy R. Mills
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Abstract
This map shows the altitude of the top of the Permian--and Pennsylvanian age Minnelusa Formation, the deepest aquifer in the northeastern Black Hills for which there is sufficient data available to construct a structural map. The Minnelusa Formation outcrops in the western part of the map area and is more than 3 ,600 ft below land surface in the northeastern corner of the area. The formation consists of interbedded sandstone, sandy dolomite and limestone, shale, siltstone, gypsum, and anhydrite. The upper beds are an aquifer and the lower beds are a confining or semi-confining unit. Small anticlines and synclines parallel the Minnelusa outcrop. Domal structures and peaks in the study area are the result of Tertiary-age intrusions. (USGS)
Suggested Citation
Peter, K.D., Kyllonen, D.P., Mills, K.R., 1988, Geologic structure and altitude of the top of the Minnelusa Formation, northeastern Black Hills, South Dakota: U.S. Geological Survey Water-Resources Investigations Report 85-4233, 1 map ; 55 x 80 cm., on sheet 91 x 128 cm., https://doi.org/10.3133/wri854233.
| Publication type | Report |
|---|---|
| Publication Subtype | USGS Numbered Series |
| Title | Geologic structure and altitude of the top of the Minnelusa Formation, northeastern Black Hills, South Dakota |
| Series title | Water-Resources Investigations Report |
| Series number | 85-4233 |
| DOI | 10.3133/wri854233 |
| Year Published | 1988 |
| Language | ENGLISH |
| Description | 1 map ; 55 x 80 cm., on sheet 91 x 128 cm. |