| Tomstown Dolomite Stratigraphic range: Cambrian |
|
|---|---|
| Type | Formation |
| Underlies | Rome Group and Waynesboro Formation |
| Overlies | Antietam Formation and Chilhowee Group |
| Thickness | 200 - 1000 feet |
| Lithology | |
| Primary | Dolostone |
| Other | Chert, limestone, shale |
| Location | |
| Region | Maryland, Pennsylvania, Virginia, West Virginia |
| Country | United States |
The Tomstown Dolomite or Tomstown Formation is a geologic formation in Maryland, Pennsylvania, Virginia and West Virginia. It preserves fossils dating to the Cambrian Period.