Powell Formation
Stratigraphic range: Ordovician
TypeFormation
UnderliesEverton Formation
OverliesCotter Formation[1]
Lithology
PrimaryDolomite
OtherShale, sandstone, chert
Location
RegionArkansas, Missouri and Virginia
CountryUnited States
Type section
Named forPowell railroad station (now abandoned), Marion County, Arkansas[2]
Named byEdward Oscar Ulrich

The Powell Formation or Powell Dolomite is a geologic formation in northern Arkansas, southeast Missouri[3] and Virginia. It contains gastropod, cephalopod, and trilobite fossils dating back to the Ordovician Period.[3]

See also

References

  1. ^ 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 230
  2. ^ Purdue, A.H.; Miser, H.D. (1916). "Description of the Eureka Springs and Harrison quadrangles". U.S. Geological Survey Geologic Atlas of the United States. 202: 2, 4, 5, 6, 7, 9, 16, 17, 18, 20, 21.
  3. ^ a b "Powell Dolomite/Formation". Archived from the original on 2014-07-14. Retrieved 2014-07-11.


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