| Smithville Formation | |
|---|---|
| Stratigraphic range: Ordovician | |
| Type | Formation |
| Sub-units | Black Rock Limestone Member |
| Underlies | Everton Formation |
| Overlies | Powell Formation |
| Lithology | |
| Primary | dolomite |
| Location | |
| Region | Arkansas |
| Country | United States |
| Type section | |
| Named for | Smithville, Lawrence County, Arkansas[1] |
| Named by | Edward Oscar Ulrich[2] |
The Smithville Formation or Smithville Dolomite is a geologic formation in Arkansas. It preserves fossils dating back to the Ordovician period.
See also[edit]
References[edit]
- ^ Thompson, Thomas L., 2001, Lexicon of Stratigraphic Nomenclature in Missouri, Missouri Department of Natural Resources, Division of Geology and Land Survey, Report of Investigation Number 73, p 267
- ^ McKnight, E. T. (1935). "Zinc and lead deposits of northern Arkansas" (PDF). U.S. Geological Survey Bulletin. 853: 311. Retrieved 3 June 2018.
- Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.