Salem Limestone

The Salem Formation is a geologic formation in Illinois, Indiana, Kentucky, and Missouri. It preserves fossils dating back to the Mississippian subperiod. This formation is quarried and used as a building material, known as "Indiana limestone", also called Bedford limestone.

Salem Formation
Stratigraphic range: Mississippian
Fossil red algae on Salem Limestone from Kentucky
Type	Formation
Unit of	Sanders Group, Meramec Group
Underlies	St. Louis Limestone
Overlies	Harrodsburg Limestone[1] Warsaw Formation[2]
Lithology
Primary	Limestone
Location
Region	Illinois, Indiana, Kentucky, and Missouri
Country	United States
Type section
Named for	Salem, Washington County, Indiana[2]

See also

• List of fossiliferous stratigraphic units in Illinois
• List of fossiliferous stratigraphic units in Indiana
• List of fossiliferous stratigraphic units in Kentucky
• List of fossiliferous stratigraphic units in Missouri