Potosi Dolomite

Potosi Formation
Stratigraphic range: Cambrian
Fossil from the Potosi Dolomite
TypeFormation
UnderliesEminence Dolomite and Oneota Dolomite
OverliesDavis Formation,[1] Derby-Doerun Dolomite,[2] and Franconia Formation
Location
Coordinates38°05′30″N 90°41′07″W / 38.091733°N 90.685176°W / 38.091733; -90.685176
RegionIllinois, Indiana, Missouri
CountryUnited States

The Potosi Formation is a geologic formation in Missouri, Illinois and Indiana. It preserves fossils dating back to the Cambrian period.

  1. ^ General Stratigraphic Column for Paleozoic Rocks in Indiana
  2. ^ 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 229