Earth:Cotter Formation
From HandWiki
Short description: Geologic formation in the United States
| Cotter Formation Stratigraphic range: Ordovician | |
|---|---|
| Type | Formation |
| Underlies | Powell Formation |
| Overlies | Jefferson City Formation |
| Lithology | |
| Primary | Dolomite |
| Other | Chert, sandstone, shale |
| Location | |
| Region | Arkansas, Missouri, Oklahoma, Virginia |
| Country | United States |
| Type section | |
| Named for | Cotter, Baxter County, Arkansas |
| Named by | Edward Oscar Ulrich[1] |
The Cotter Formation is a geologic formation in Arkansas,[2] Missouri,[3] Oklahoma[4] and in Virginia. It preserves fossils dating back to the Ordovician period.
See also
- List of fossiliferous stratigraphic units in Arkansas
- List of fossiliferous stratigraphic units in Virginia
- Paleontology in Arkansas
- Paleontology in Virginia
References
- ↑ Purdue, A.H.; Miser, Hugh D. (1916). "Description of the Eureka Springs and Harrison quadrangles". U.S. Geological Survey Geologic Atlas of the United States 202: 4. https://pubs.usgs.gov/gf/202/text.pdf.
- ↑ "Cotter Dolomite". http://www.geology.ar.gov/geology/ozark_ordovician.htm.
- ↑ 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 72-3
- ↑ McFarland, John David (2004). "Stratigraphic summary of Arkansas". Arkansas Geological Commission Information Circular 36: 3–4. http://geology.ar.gov/pdf/IC-36_v.pdf. Retrieved 2018-01-10.
- ((Various Contributors to the Paleobiology Database)). "Fossilworks: Gateway to the Paleobiology Database". http://www.fossilworks.org/cgi-bin/bridge.pl?action=home.
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