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| Elwren Formation | |
|---|---|
| Stratigraphic range: Mississippian | |
| Type | Formation |
| Unit of | West Baden Group |
| Underlies | Beech Creek Limestone |
| Overlies | Reelsville Limestone |
| Location | |
| Region | Indiana and Kentucky |
| Country | United States |
The Elwren Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Carboniferous period.
The Fort Payne Formation, or Fort Payne Chert, is a geologic formation found in the southeastern region of the United States. It is a Mississippian Period cherty limestone, that overlies the Chattanooga Shale, and underlies the St. Louis Limestone. To the north, it grades into the siltstone Borden Formation. It preserves fossils dating back to the Carboniferous period.
The Grant Lake Formation is a geologic formation in Ohio and Kentucky. 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 Caseyville Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Carboniferous period.
The Tar Springs Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Carboniferous period.
The Glen Dean Limestone 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 Ramp Creek Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Carboniferous period.
The Salem Formation is a geologic formation in Illinois, Indiana, Kentucky, and Missouri. It preserves fossils dating back to the Mississippian subperiod.
The Ste. Genevieve Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Carboniferous period.
The Tradewater Formation is a geologic formation in Kentucky. It preserves fossils dating back to the Carboniferous period.
The Benbolt 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 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 Big Clifty Formation is a geologic formation in Indiana. It preserves fossils dating back to the Carboniferous 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 Bond Formation is a geologic formation in Illinois, Kentucky and Indiana. It preserves fossils dating back to the Carboniferous 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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