| Liberty Formation | |
|---|---|
| Stratigraphic range: Late Ordovician | |
 Liberty Formation (Upper Ordovician) exposed north of Brookville, Indiana | |
| Type | Formation |
| Underlies | Saluda Formation and Whitewater Formation |
| Overlies | Waynesville Formation |
| Location | |
| Region |  Ohio  Indiana |
| Country |  United States |
The Liberty Formation is a geologic formation in Ohio and Indiana. It preserves fossils dating back to the Ordovician period.
The Trenton Formation is a geologic formation in Canada and Michigan, Ohio, and Indiana in the United States. It preserves fossils dating back to the Ordovician period.
The Waynesville Formation is a geologic formation in Ohio and Indiana. It preserves fossils from the Late Ordovician period.
The Whitewater Formation is a geologic formation in Ohio and Indiana. It preserves fossils dating back to the Ordovician period.
The Saluda Formation is a geologic formation in Ohio and Indiana. It preserves fossils dating back to the Ordovician period.
The Miamitown Formation is a geologic formation in Ohio. It preserves fossils dating back to the Ordovician period.
The Grant Lake Formation is a geologic formation in Ohio and Kentucky. It preserves fossils dating back to the Ordovician period.
The Ohio Shale is a geologic formation in Ohio. It preserves fossils dating back to the Devonian period.
The McMillan Formation is a geologic formation in Ohio, Kentucky and Indiana. It preserves fossils dating back to the Ordovician period.
The Lilley Formation is a geologic formation in Ohio. It preserves fossils dating back to the Silurian period.
The Cincinnati Group is a geologic group in Kentucky, Ohio and Indiana. It is Upper Ordovician.
The Harrodsburg Limestone is a geologic formation, a member of the Sanders Group of Indiana Limestone, of Mississippian age. It was named for Harrodsburg in southern Monroe County, Indiana by T. C. Hopkins and C. E. Siebenthal. It is made up primarily of calcarenite and calcirudite. It also may include some beds of dolomite and shale.
The Salem Formation is a geologic formation in Illinois, Indiana, Kentucky, and Missouri. It preserves fossils dating back to the Mississippian subperiod.
The Davis Formation is a geologic formation in Indiana and Missouri. It preserves fossils dating back to the Cambrian period.
The Carbondale Formation is a geologic formation in Indiana. It preserves fossils dating back to the Carboniferous period.
The Shelburn Formation is a geologic formation in Indiana. It preserves fossils dating back to the Carboniferous period.
The Tanners Creek Formation is a geologic formation in Indiana. It preserves fossils dating back to the Ordovician period.
The Osgood Formation, also known as the Osgood Shale is a geologic formation in Indiana, Kentucky, and Ohio. It preserves fossils dating back to the Silurian period.
The Shakopee Formation is a geologic formation in Illinois, Indiana, Wisconsin, and Minnesota. It preserves fossils dating back to the Ordovician period. It is named after the town of Shakopee, Minnesota, where the formation can be seen in bluffs along the Minnesota River
The Lorraine Group is a geologic group in the northeastern United States and southeastern Canada.
The Franconia Formation is a geologic formation in the upper mid-western United States, with outcroppings found in Illinois, Indiana, Iowa, Michigan, Minnesota, Missouri, Ohio, and Wisconsin. It preserves fossils dating back to the Cambrian period. It was named the Franconia Formation due to the first published documentation of exposures in vicinity of Franconia, Minnesota in the 1897 Ph.D. dissertation by Charles P. Berkley at the University of Minnesota titled Geology of the St. Croix Dalles. The Franconian stratigraphic stage was named after this formation.
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