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File:Bituminous coal (Middle Mercer Coal, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 4 (33101350662).jpg

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Bituminous coal from the Pennsylvanian of Ohio, USA.

The Pottsville Group is a Pennsylvanian-aged cyclothemic succession containing 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 Limestone horizon (?).

This sample is from the Middle Mercer Coal. Stratigraphically, the coal horizon occurs immediately below the Lower Mercer Limestone, a widespread marine fossiliferous limestone unit. The Middle Mercer Coal usually consists of bituminous coal, but in places it is a cannel coal.

Stratigraphy: Middle Mercer Coal, Pottsville Group, lower Atokan Stage, lower Middle Pennsylvanian

Locality: roadcut along the northern side Rt. 16, southern margin of Irish Ridge, west of the Rt. 16-Rt. 60 intersection, northwest of the town of Trinway, northwestern Muskingum County, eastern Ohio, USA (40° 09’ 12.95” North latitude, 82° 02’ 43.27” West longitude)
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Source Bituminous coal (Middle Mercer Coal, Middle Pennsylvanian; Rt. 16 roadcut near Trinway, Ohio, USA) 4
Author James St. John

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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/33101350662. It was reviewed on 24 June 2017 by FlickreviewR and was confirmed to be licensed under the terms of the cc-by-2.0.

24 June 2017

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current17:36, 24 June 2017Thumbnail for version as of 17:36, 24 June 20171,911 × 1,541 (1.8 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via Flickr2Commons

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