Cotter Formation

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.

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