Rockdale Run Formation
Geological formation in the United States
From Wikipedia, the free encyclopedia
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.
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TypeFormation
Unit ofBeekmantown Group
UnderliesPinesburg Station Dolomite
OverliesStonehenge Limestone
| 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 |
