| Ashlock Formation | |
|---|---|
| Stratigraphic range: Ordovician | |
 Brachiopod fossil from the Ashlock Formation | |
| Type | Formation |
| Underlies | Drakes Formation |
| Overlies | Calloway Creek Formation |
| Location | |
| Region |  Kentucky |
| Country |  United States |
The Ashlock Formation is a geologic formation in Kentucky. 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 Grant Lake 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 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 Four Corners Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Carboniferous period.
The Golconda Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Carboniferous period. In Indiana, the Golconda, it is called the Golconda Limestone and is part of the Stephensport Group.
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 Ste. Genevieve Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Carboniferous period.
The Beechwood Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Devonian period.
The Benbolt Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Ordovician period.
The Calloway Creek Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Ordovician period.
The Drakes Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Ordovician period.
The Tyrone Limestone is a geologic formation in Kentucky. It preserves fossils dating back to the Ordovician period.
The Stingy Creek Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Ordovician period.
The Tate Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Ordovician period.
The Claiborne Formation or Claiborne Group is a geologic formation in Arkansas, Illinois, Kentucky, and Texas. It preserves fossils dating back to the Paleogene 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 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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