Lowellville Shale (Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA) 1

            Black shales in the Pennsylvanian of Ohio, USA.

"Lowellville Shale" is the nickname used here for dark-colored mudshales overlying the Lowellville Limestone in the Pottsville Group of northeastern Ohio, USA.

Just above the Lowellville Limestone at the Beach City Dam outcrop, the Lowellville Shale is fissile to flaggy, fossiliferous, black calcareous shale.  Above that is non-flaggy, sparsely-fossiliferous, incompetent, black calcareous shale.  Observed fossils include Posidonia bivalves, Trepospira gastropods, crinoid stem columnals, straight-shelled nautiloid cephalopods, coiled cephalopods, plants, and horizontal burrows.

The Lowellville Shale and underlying Lowellville Limestone are part of the Pottsville Group, a Pennsylvanian-aged cyclothemic succession in eastern Ohio that contains nonmarine shales, marine shales, siltstones, sandstones, coals, marine limestones, and chert ("flint").  The lower Pottsville dates to the late Early Pennsylvanian.  The upper part dates to the early Middle Pennsylvanian.  The Lower-Middle Pennsylvanian boundary is apparently somewhere near the Boggs Member (?).

Stratigraphy: Lowellville Shale, just above the Lowellville Limestone, Pottsville Group, upper Lower Pennsylvanian

Location: Beach City Dam outcrop - exposure on the southern side of Sugar Creek, immediately downstream from Beach City Dam, northern Franklin Township, northwestern Tuscarawas County, northeastern Ohio, USA (40° 38’ 06.71” North latitude, 81° 33’ 21.80” West longitude)

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Taken on: October 31, 2015

Tags:

Lowellville

Shale

Pottsville

Group

Pennsylvanian

Beach

City

Dam

Ohio

shales

black « less

Sets appears in: • Ohio Rocks, Minerals, Fossils • Lowellville Shale (Lower Pennsylvanian; Beach City Dam outcrop, northeastern Ohio, USA) more » • Pottsville Group (Lower and Middle Pennsylvanian; eastern Ohio, USA) « less

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