Primary sedimentary structures are visible. Interpret the environment of deposition. Interpret the geologic history subsequent to deposition.
Hutton's classic unconformity (Devonian red beds over Silurian graywacke and shale).
At the Caves of Cushendun, an arkosic conglomerate can be found.
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.
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