Warsaw Formation

Warsaw Formation
Stratigraphic range: Mississippian
Geode from the Warsaw Formation (Warsaw, Hancock County, Illinois)
TypeFormation
UnderliesSalem Formation
OverliesKeokuk Limestone[1]
Location
RegionIllinois, Iowa, Missouri
CountryUnited States
Type section
Named forWarsaw, Hancock County, Illinois[1]

The Warsaw Formation is a geologic formation in Illinois, Iowa and Missouri. It preserves fossils dating back to the Mississippian subperiod.

  1. ^ a b 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 145