| Waynesburg Formation | |
|---|---|
| Stratigraphic range: Carboniferous | |
| Type | Formation |
| Unit of | Dunkard Group |
| Lithology | |
| Primary | Sandstone, siltstone, coal |
| Location | |
| Region | West Virginia, Pennsylvania |
| Country | United States |
| Type section | |
| Named for | Waynesburg, Pennsylvania [1] |
The Waynesburg Formation is a coal, sandstone, and siltstone geologic formation in West Virginia and Pennsylvania. It preserves fossils dating back to the Permian period.
The Waynesburg Formation has a complicated history with the name being assigned to up to six different stratigraphic units. [1] It consists of a basal coal bed, an unnamed sandstone member formerly called the Waynesburg Sandstone, and a sandy siltstone member. [1] [2] The basal coal member is considered mineable. [2]