Natural Resources, School of


Date of this Version



Published in Proceedings of the Nebraska Academy of Sciences, including the GNATS & TER-QUA Divisions, and Nine Affiliated Societies, 95th Annual Meeting, April 12–13, 1985, pp. 47-48. Copyright © 1985 Robert F. Diffendal, James W. Goeke, and Michael R. Voorhies.


Sandwiched between the overlying eolian Quaternary loesses and sands and the underlying beds of the Ash Hollow Formation, Ogallala Group, buried beneath the sliver of Cheyenne Tableland in Keith County and adjacent areas of western Nebraska, is a mass of fluvially deposited sand, gravelly sand, and sandy gravel of previously uncertain age. Some authors assigned these sediments to the Ogallala Group, while others have called them either the Broadwater Formation (Blancan), or a combination of the two rock units.