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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.
| 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 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]
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