File:Fissile cannel coal (Upper Freeport Coal, Middle Pennsylvanian; Diamond Coal Mine, Linton, Ohio, USA) 1.jpg
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[edit]DescriptionFissile cannel coal (Upper Freeport Coal, Middle Pennsylvanian; Diamond Coal Mine, Linton, Ohio, USA) 1.jpg |
English: Cannel coal from the Pennsylvanian of Ohio, USA. (cross-section view)
The Linton Lagerstätte is a famous fossil deposit at the Diamond Coal Mine in far-eastern Ohio. It occurs in channel-filling, fissile cannel coal in the lower Upper Freeport Coal. The Upper Freeport is about 9 feet thick at this locality - bituminous coal in the Upper Freeport interval was the target for mining. The fissile cannel coal at the base of the Upper Freeport was waste rock and discarded in a large pile. Fossils include plants (palynomorph microfossils), invertebrates (principally conchostracans), and vertebrates (fish, amphibians, reptiles). Cannel coals are odd varieties of coal. They don’t have the look & feel of ordinary coals such as lignite, bituminous coal, and anthracite. Cannel coals are lightweight, as all coals are, but are surprisingly tight and solid - they hold up to natural weathering pretty well, considering they’re coals. They are not sooty to the touch, and have conchoidal fracture (smooth & curved fracture surfaces). Cannel coals usually lack the well-developed horizontal bedding & laminations seen in lignites and bituminous coals. Not surprisingly, the differences in physical characterstics between cannel coal and other ranks of coal are due to the organic matter content. Cannel coals are composed principally of fossil spores (sporinite phytoclasts). Garden-variety coals are composed principally of a mix of altered fragmented plant debris that was originally woody tissue, leaves, bark, fungi, and spores. Cannel coals are generally interpreted to have formed in pond, lagoon, or channel facies within a larger coal swamp setting. The Linton cannel coal is unusual because it is fissile - it breaks into thin, flat pieces, as shale does. Stratigraphy: lower part of the Upper Freeport Coal (= Number 7 Coal), Allegheny Group, Middle Pennsylvanian Locality: Diamond Coal Mine, Linton, far-eastern Jefferson County, far-eastern Ohio, USA |
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Source | https://www.flickr.com/photos/47445767@N05/51122210133/ |
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@N05/51122210133. It was reviewed on 19 April 2021 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
19 April 2021
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current | 14:00, 19 April 2021 | ![]() | 4,000 × 1,691 (5.47 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51122210133/ with UploadWizard |
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Date and time of data generation | 17:17, 15 April 2021 |
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File change date and time | 22:36, 17 April 2021 |
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Date and time of digitizing | 17:17, 15 April 2021 |
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Date metadata was last modified | 18:36, 17 April 2021 |
Unique ID of original document | 1AA70ABC252720FBC8F73AA8B4F796AA |