The Chase Group is a sedimentary rock unit of Lower Permian age. It is defined in east-central Kansas and extends into Oklahoma and Nebraska as well as the Colorado subsurface where it is undivided. The unit was assigned geologic group rank around 1902.[2]
See also
References
- ^ a b Prosser, C.S., 1895, The classification of the upper Paleozoic rocks of central Kansas: Journal of Geology, v. 3, nos. 6-7, p. 682-705, 764-800.
- ^ "Geologic Unit: Chase". National Geologic Database. Geolex — Significant Publications. United States Geological Survey. Retrieved 2021-11-28.