Cambrian-aged rocks that began as seafloor sediments (shaly mud) and were squeezed and metamorphosed during the Appalachian Orogenic cycle.
An outcrop of Manhattan Schist in lower Central Park, New York City.
... with the MN-61 bridge in the background.
Just northwest of the MN-61 bridge.
Detail of facing stones on the Morton Pub.
... on the Morton Pub.
Morton Gneiss facing stone.
Roxborough State Park
It's the sandy layer just below the coal seam, at the base of the sandstone.
The K/T boundary is marked by the sandy layer just below the coal seam, at the base of the sandstone.
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