Cotter Formation

Last updated
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

References

  1. ↑ Purdue, A.H.; Miser, Hugh D. (1916). "Description of the Eureka Springs and Harrison quadrangles" (PDF). U.S. Geological Survey Geologic Atlas of the United States. 202: 4.
  2. ↑ "Cotter Dolomite". Archived from the original on 2014-07-14. Retrieved 2014-07-11.
  3. ↑ 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
  4. ↑ McFarland, John David (2004) [1998]. "Stratigraphic summary of Arkansas" (PDF). Arkansas Geological Commission Information Circular. 36: 3–4. Archived from the original (PDF) on 2016-12-21. Retrieved 2018-01-10.


This page is based on this Wikipedia article
Text is available under the CC BY-SA 4.0 license; additional terms may apply.
Images, videos and audio are available under their respective licenses.