| 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) |
| Genre: | USGS Numbered Series |
| ProdID: | 44454 |
| Citation Author: | Peter, Kathy D.; Kyllonen, David P.; Mills, Kathy R. |
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| Citation Language: | ENGLISH |
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| Citation Phsyical Description: | 1 map ; 55 x 80 cm., on sheet 91 x 128 cm. |
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| Citation Series: | Water-Resources Investigations Report |
| Citation Series Code: | WRI |
| Citation Series Number: | 85-4233 |
| Citation Search Results Text: | Geologic structure and altitude of the top of the Minnelusa Formation, northeastern Black Hills, South Dakota; 1988; WRI; 85-4233; Peter, Kathy D.; Kyllonen, David P.; Mills, Kathy R. |
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| Citation Year: | 1988 |
| Type: | citation/reference |
| Text: | Geologic structure and altitude of the top of the Minnelusa Formation, northeastern Black Hills, South Dakota; 1988; WRI; 85-4233; Peter, Kathy D.; Kyllonen, David P.; Mills, Kathy R. |
| URL (THUMBNAIL): | http://pubs.er.usgs.gov/thumbnails/usgs_thumb.jpg |
| URL (PLATE): | http://pubs.usgs.gov/wri/1985/4233/plate-1.pdf |
| Date Other: | Sat, 1 Jan 1994 00:00 -0600 |
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