| Haskell Limestone | |
|---|---|
| Stratigraphic range: (Missourian stage) | |
 Haskell Limestone outcrops along the banks of the Wakarusa River south of Lawrence, Kansas, here, near Blue Jacket's Crossing, close to the Haskell Institute. | |
| Type | Formation member |
| Unit of | Cass Formation of the Douglas Group |
| Lithology | |
| Primary | Limestone |
| Location | |
| Region | Kansas and neighboring states |
| Country | United States |
| Type section | |
| Named for | Haskell Indian Nations University |
| Named by | R.C. Moore[1] |
| Year defined | 1931 |
Haskell Limestone is a geological unit name originating in Kansas and used in adjoining states. The Pennsylvanian period[1] unit was named by R.C. Moore for the Haskell Institute in the southeast of Lawrence, Kansas in 1931.[1] The name has been applied to various beds within this range, and assigned as a member variously to the Lawrence Formation, Cass Formation, and Stranger Formation, and significant legacy literature exists for each classification. These three formations now comprise the Douglas Group.[2]
In 2002, within the effort to improve the correlation of Missourian stage geology between the states of Missouri and Kansas, as well as Nebraska and Iowa, the Haskell was assigned in Kansas to the Cass Formation as its lowest member (on the basis of distinct changes in fossil species).[2]
- ^ a b c "Geologic Unit: Haskell". National Geologic Database. Geolex — Significant Publications. United States Geological Survey. Retrieved 2022-04-02.
- ^ a b P. H. Heckel and W. L. Watney (2002). "Revision of Stratigraphic Nomenclature and Classification of the Pleasanton, Kansas City, Lansing, and Lower Part of the Douglas Groups (Lower Upper Pennsylvanian, Missourian) in Kansas". Kansas Geological Survey Bulletin (246). University of Kansas Publications, Kansas Geological Survey: Stratigraphy, continued : Douglas Group (redefined). Retrieved 2022-04-02.