Tomstown Dolomite Stratigraphic range: Cambrian |
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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.