Harrodsburg Limestone

Harrodsburg Limestone Stratigraphic range: Mississippian
Type	Formation
Location
Region	Indiana, Kentucky
Country	United States
Type section
Named for	Harrodsburg, Indiana
Named by	T. C. Hopkins and C. E. Siebenthal in 1897

The Harrodsburg Limestone is a geologic formation, a member of the Sanders Group of Indiana Limestone, of Mississippian age. It was named for Harrodsburg, Indiana in southern Monroe County, Indiana by T. C. Hopkins and C. E. Siebenthal ("The Bedford Oolitic Limestone of Indiana" - 1897). It is made up primarily of calcarenite and calcirudite. It also may include some dolomite and shale.

Harrodsburg Limestone is found throughout the part of the Illinois Basin running through southern Indiana.