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.
Chaneysville member of the Devonian-aged Mahantango Formation, exposed near Hayfield, Virginia.
Mahantango Formation, Trinity Church site, Fort Valley, Virginia.
Evidence of latest Devonian glaciation in the Appalachian Basin.
Pressure solution seams in Devonian-aged Helderburg Group limestone from Corridor H.
Specimen of the feeding trace fossil Zoophycos, from Devonian-aged Mahantango Formation of the Fort Valley, Shenandoah County, Virginia.
Looking down on a bedding plane slab of sandstone from the Devonian Hampshire Formation: the bed is pierced by many bedding-perpendicular tubes interpreted as burrows. The ichnogenus is Skolithos.
Devonian red beds with clear fluvial signatures, Corridor H, West Virginia.
Devonian red beds, folded during Alleghanian mountain-building.
Slab showing bedding-parallel trace fossils in siltstone of the Devonian-aged Millboro Formation.
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