Rockdale Run Formation
Stratigraphic range: Lower Ordovician
Rockdale Run Formation in Skyline Caverns, Virginia
Type	Formation
Unit of	Beekmantown Group
Underlies	Pinesburg Station Dolomite
Overlies	Stonehenge Limestone
Thickness	2450 ft[1]
Lithology
Primary	Limestone
Other	dolomite, chert
Location
Region	Maryland, Pennsylvania, Virginia[2] and West Virginia
Country	United States

The Rockdale Run Formation is a geologic formation in Maryland, Pennsylvania, Virginia and West Virginia.^[1] It preserves fossils dating back to the Ordovician period.

• List of fossiliferous stratigraphic units in Maryland
• List of fossiliferous stratigraphic units in Pennsylvania
• List of fossiliferous stratigraphic units in Virginia
• List of fossiliferous stratigraphic units in West Virginia

• Various Contributors to the Paleobiology Database. "Fossilworks: Gateway to the Paleobiology Database". Retrieved 17 December 2021.

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