Salem Formation

Salem Formation Stratigraphic range: Mississippian
Type	Formation
Underlies	St. Louis Limestone
Overlies	Warsaw Formation
Lithology
Primary	Limestone
Location
Region	Illinois, Indiana, Missouri
Country	United States
Type section
Named for	Salem, Washington County, Indiana

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