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Cotter Formation

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Geologic formation in the United States
Cotter Formation
Stratigraphic range: Ordovician
TypeFormation
UnderliesPowell Formation
OverliesJefferson City Formation
Lithology
PrimaryDolomite
OtherChert, sandstone, shale
Location
RegionArkansas, Missouri, Oklahoma, Virginia
CountryUnited States
Type section
Named forCotter, Baxter County, Arkansas
Named byEdward Oscar Ulrich

The Cotter Formation is a geologic formation in Arkansas, Missouri, Oklahoma 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) . "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.


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