File:Flattened fossil log in bituminous coal (Lower Mercer Coal, Pottsville Group, Pennsylvanian; Rt. 93 roadcut north of Mt. Pleasant, Hocking County, Ohio, USA) 3.jpg

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English: Flattened fossil log in bituminous coal from the Pennsylvanian of Ohio, USA. (geology hammer for scale)

This fossiliferous coal sample is from the Pottsville Group of eastern Ohio. 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 is a sample of weathered bituminous coal with a flattened fossil log (= the large, light-colored structure at center).

Stratigraphy: float apparently derived from the Lower Mercer Coal (= Number 3 Coal), just below the Boggs Limestone, middle Pottsville Group, lower Atokan Stage, lower Middle Pennsylvanian

Locality: loose piece near the base of Mt. Pleasant North Outcrop - roadcut on the eastern side of Rt. 93, just north of the town of Mt. Pleasant, southern Washington Township, southern Hocking County, southeastern Ohio, USA (39° 23' 51.35" North latitude, 82° 27' 14.15" West)
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Source https://www.flickr.com/photos/47445767@N05/22855680919/
Author James St. John

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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/22855680919. It was reviewed on 20 October 2020 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

20 October 2020

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current02:01, 20 October 2020Thumbnail for version as of 02:01, 20 October 20203,574 × 2,997 (3.18 MB)Ser Amantio di Nicolao (talk | contribs)Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/22855680919/ with UploadWizard

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