| Grant Lake Formation | |
|---|---|
| Stratigraphic range: Late Ordovician | |
 Grant Lake Formation exposed in Boone County, Kentucky. | |
| Type | Formation |
| Underlies | Arnheim Formation and Bull Fork Formation |
| Overlies | Fairview Formation |
| Location | |
| Region |  Ohio  Kentucky |
| Country |  United States |
The Grant Lake Formation is a geologic formation in Ohio and Kentucky. 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 Saluda Formation is a geologic formation in Ohio and Indiana. It preserves fossils dating back to the Ordovician period.
The Arnheim Formation is a geologic formation in Ohio. It preserves fossils dating back to the Ordovician period.
The Liberty Formation is a geologic formation in Ohio and Indiana. It preserves fossils dating back to the Ordovician period.
The Corryville Formation is a geologic formation in Ohio and Kentucky. It preserves fossils dating back to the Ordovician period.
The Bull Fork Formation is a geologic formation in north central Kentucky and southwestern Ohio. It preserves fossils dating back to the Ordovician period.
The Bellevue 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 Louisville Limestone is a geologic formation in Ohio. It preserves fossils dating back to the Silurian period.
The Bisher 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. This formation is quarried and used as a building material, known as "Indiana limestone", also called Bedford limestone.
The Ste. Genevieve Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Carboniferous period.
The Drakes Formation is a geologic formation in Kentucky. 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 Laurel Formation, also known as the Laurel Limestone or the Laurel Dolomite, is a geologic formation in Indiana and Kentucky. It preserves fossils dating back to the Silurian period.
The Lorraine Group is a geologic group in the northeastern United States and southeastern Canada.
The Java Formation is a geologic formation in Kentucky, New York, Ohio, Pennsylvania, Tennessee, Virginia, West Virginia. It preserves fossils dating back to the Devonian period. The formation comprises the Pipe Creek Shale, Wiscoy Sandstone Member in New York, and Hanover Shale Member except in Tennessee.
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