|
| This composite columnar section is generalized for the North Unit of Badlands National Park. Note that the composition and thickness of rock units vary considerable from location to location, and are not drawn here to perfect scale. Named "facies" of the Pierre Shale and Fox Hills Formation follow the Type area for these formations in north central South Dakota (source: Stoffer, 2003, Geology of Badlands National Park: A Preliminary Report: http://geopubs.wr.usgs.gov/open-file/of03-35/ ). |
 |