Columbus Limestone (Middle Devonian; next to Millikin Falls, Columbus, Ohio, USA) 2

            Limestones 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 America's 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: Columbus Limestone, Eifelian Stage, lower Middle Devonian

Locality: creek cut just downstream of Millikin Falls, southern side of Robert Millikin "Ditch" / Roberts Millikin "Ditch", Quarry Trails Park, western side of Marblecliff Quarry (Marble Cliff Quarry), western side of Columbus, Franklin County, central Ohio, USA

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Taken on: December 17, 2021

Tags:

Columbus

Limestone

Robert

Millikin

Ditch

Falls

Quarry

Trails

Park

Ohio

Marblecliff

Marble

Cliff

stream

streams

creek

creeks

cut

cuts « less

Sets appears in: • Ohio Rocks, Minerals, Fossils • Quarry Trails Park (Columbus, Ohio, USA) more » • Devonian Rocks & Fossils • Columbus Limestone (Middle Devonian; Ohio, USA) « less

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