File:Fossil logs in sandstone (Massillon Sandstone, Pottsville Group, Lower Pennsylvanian; Mohawk Dam roadcut, northwest of Nellie, Ohio, USA) 4 (32996237472).jpg

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Fossil logs in sandstone in the Pennsylvanian of Ohio, USA.

The Pottsville Group is 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 (?).

Shown above is a talus block of quartzose sandstone. The mottled rusty brown coloration is from iron oxides. The elongated, striated structures are fossil logs. This piece has eroded from an ridgetop outcrop of Massillon Sandstone.

Stratigraphy: Massillon Sandstone, lower Pottsville Group, upper Lower Pennsylvanian

Locality: talus block at roadcut next to Mohawk Dam, northwest of the town of Nellie, western Coshocton County, eastern Ohio, USA
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Source Fossil logs in sandstone (Massillon Sandstone, Pottsville Group, Lower Pennsylvanian; Mohawk Dam roadcut, northwest of Nellie, 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@N05/32996237472. 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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current17:31, 24 June 2017Thumbnail for version as of 17:31, 24 June 20174,000 × 3,000 (5.87 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via Flickr2Commons

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