Type Formation Thickness 200 - 1000 feet Primary Dolostone | Underlies Waynesboro Formation Country United States Overlies Antietam Formation | |
Other Chert, limestone, shale Region Maryland, Pennsylvania, Virginia, West Virginia |
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.
References
Tomstown Dolomite Wikipedia(Text) CC BY-SA