Type Formation Thickness 2450 ft Country United States Overlies Stonehenge Limestone | Unit of Beekmantown Group Other Dolomite, chert Primary Limestone | |
Underlies Pinesburg Station Dolomite Regions Maryland, Pennsylvania, Virginia, West Virginia | ||
The Rockdale Run Formation is a geologic formation in Maryland, Pennsylvania, Virginia and West Virginia. It preserves fossils dating back to the Ordovician period.
References
Rockdale Run Formation Wikipedia(Text) CC BY-SA