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File:Fossiliferous shale (Ramey Creek Member, Slade Formation, Upper Mississippian; Bighill Mountain roadcut, south of Bighill, Kentucky, USA) (45582807315).jpg

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Fossiliferous shale in the Mississippian of Kentucky, USA.

Shale is a fine-grained, siliciclastic sedimentary rock. It is the # 1 most common sedimentary rock on Earth. Common colors of shale are black, gray, earth-tone reddish, and earth-tone greenish-gray. Shale feels relatively smooth to the touch and usually weathers into thin, flat pieces - this is known as fissility.

Seen here is a weathered, soft, gray fossiliferous shale with pelmatozoan stems (= the very light brown-colored objects). These stems supported organisms such as blastoids (= common at this site) and crinoids.

Stratigraphy: Ramey Creek Member, Slade Formation, Chesterian Series, Upper Mississippian

Locality: Bighill Mountain Outcrop - Route 421 roadcut through Bighill Mountain, ~county line between Rockcastle County and Madison County, south of the town of Bighill, east-central Kentucky, USA (vicinity of 37° 31’ 24.89” North latitude, 84° 12’ 28.15” West longitude)
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Source Fossiliferous shale (Ramey Creek Member, Slade Formation, Upper Mississippian; Bighill Mountain roadcut, south of Bighill, Kentucky, USA)
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@N05/45582807315 (archive). It was reviewed on 7 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

7 December 2019

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Date/TimeThumbnailDimensionsUserComment
current18:38, 7 December 2019Thumbnail for version as of 18:38, 7 December 20194,000 × 3,000 (6.57 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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