The Valley & Ridge geologic province consists of folded sedimentary rocks of the Paleozoic.
Just west of the Baker exit on Corridor H westbound is an outcrop of almost the complete Foreknobs Formation. This anomalous sandstone unit is floored by a shell hash layer (shown).
Chalcopyrite collected from the Mulberry Run outcrop of the Conococheague Formation.
South end of Wills Mountain in the Cumberland Narrows, Cumberland, Maryland. Quartzite capped mountain.
Spechty Kopf Diamictite outcrop located on the western end of the north side of Sideling Hill, along I-68 in Maryland.
Rutile needles exsolved on the surface of a biotite grain from the Devonian-aged Tioga bentonite exposed in Seven Fountains, VA.
Sample provided by Dr. Dan Doctor, US Geological Survey.
Germany Valley, West Virginia. Ordovician carbonates with fossils.
Ordovician carbonates; the obverse of this sample: gigapan.com/gigapans/186325
Ordovician carbonates; the obverse of this sample: gigapan.com/gigapans/186379
Chaneysville member of the Devonian-aged Mahantango Formation, exposed near Hayfield, Virginia.
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