Johnson Formation
| Johnson Formation | |
|---|---|
argillaceous mudstone to well-laminated limestones[2] | |
| Location | |
| Region | Midcontinent (Nebraska, Kansas, Oklahoma)[2] |
| Country | United States |
| Type section | |
| Named for | Johnson, Oklahoma[2] |
The Johnson Formation (or Johnson Limestone) is a thick
period.[1]
See also
- List of fossiliferous stratigraphic units in Kansas
- List of fossiliferous stratigraphic units in Nebraska
- List of fossiliferous stratigraphic units in Oklahoma
- Paleontology in Kansas
- Paleontology in Nebraska
- Paleontology in Oklahoma
References
- ^ a b Robert S. Sawin, Ronald R. West, Evan K. Franseen, W. Lynn Watney (January 2006). "Carboniferous-Permian Boundary in Kansas, Midcontinent, U.S.A". Current Research in Earth Sciences. 252 (1).
... the Carboniferous-Permian boundary in Kansas can now be confidently defined. Based [on fossil changes, the] boundary in Kansas can be placed at the base of the Bennett Shale Member of the Red Eagle Limestone [which the Johnson underlies].
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ a b c Jewett, John M. (1941). The Geology of Riley and Geary Counties, Kansas, Kansas Geological Survey Bulletin 39. University of Kansas Publications, State Geological Survey of Kansas.