File:Columbus Limestone (Middle Devonian) (Hayden Run, Dublin, Ohio, USA) 2 (35376914210).jpg

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Fossiliferous limestone in the Devonian of Ohio, USA.

The Columbus Limestone is a significant carbonate unit in the Devonian of central and northern Ohio. It's actually part of a much more widespread sheet of Devonian carbonates that extends from New York State to the Midwest. The Columbus Limestone represents deposition in a subtropical, shallow-water, carbonate platform environment. The rocks are principally micritic limestones, fossiliferous wackestones, and fossiliferous packstones. Some chert nodules are present in the unit. Fossils are typical Paleozoic shallow marine invertebrates - favositid corals, rugose corals, stromatoporoids, brachiopods, crinoids, blastoids, bryozoans, trilobites, bivalves, gastropods, cephalopods, rostroconchs, and tentaculites. Microfossils include conodonts and charophyte oogonia. Other fossils in the Columbus Limestone include vertebrates (fish), land plants (rare), and trace fossils. Some fossil horizons in the Columbus Limestone are partially silicified.

Stratigraphy: Marblehead Member, Columbus Limestone, Eifelian Stage, lower Middle Devonian

Locality: cliff outcrop along Hayden Run (an east-flowing tributary of the Scioto River), just downstream from Hayden Falls, just south of Hayden Run Road & just east of Dublin Road, Dublin, northwestern Franklin County, central Ohio, USA
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Source Columbus Limestone (Middle Devonian) (Hayden Run, Dublin, Ohio, USA) 2
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@N05/35376914210 (archive). It was reviewed on 12 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0.

12 October 2019

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current04:31, 12 October 2019Thumbnail for version as of 04:31, 12 October 20194,000 × 3,000 (5.85 MB)Ser Amantio di Nicolao (talk | contribs)Transferred from Flickr via #flickr2commons

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