The Nacatoch Formation is a geologic formation in Arkansas, USA.[1] It preserves fossils dating back to the Cretaceous period.

Nacatoch Formation
Stratigraphic range: Late Cretaceous
TypeFormation
UnderliesArkadelphia Marl
OverliesSaratoga Formation
Thickness150 to 400 feet[1]
Location
RegionArkansas
CountryUnited States
Type section
Named forNacatoch Bluff on the Little Missouri River, Clark County, Arkansas
Named byAlbert Homer Purdue[2]

See also

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References

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  1. ^ a b McFarland, John David (2004) [1998]. "Stratigraphic summary of Arkansas" (PDF). Arkansas Geological Commission Information Circular. 36: 30–31. Archived from the original (PDF) on 2016-12-21. Retrieved 2018-01-12.
  2. ^ Veatch, A.C. (1905). "Underground waters of eastern United States". U.S. Geological Survey Water-Supply Paper. 114: 183.