Warsaw Formation

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

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

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