Keokuk Limestone

Keokuk Limestone Stratigraphic range: Mississippian
Type	Formation
Underlies	Warsaw Formation
Overlies	Burlington Limestone
Lithology
Primary	Limestone
Location
Region	Illinois, Iowa, Missouri
Country	United States
Type section
Named for	Keokuk in southeastern Iowa

The Keokuk Limestone is a geologic formation in Illinois, Iowa and Missouri. It preserves fossils dating back to the Mississippian sub-period.