| Estill Shale | |
|---|---|
| Stratigraphic range: Silurian | |
| Type | Formation |
| Underlies | Bisher Formation |
| Overlies | Drowning Creek Formation |
| Location | |
| Country | United States |
| Extent | Ohio |
The Estill Shale is a geologic formation in Ohio. It dates back to the Silurian.
References
 | This article about a specific stratigraphic formation in Ohio is a stub. You can help Wikipedia by expanding it. |