File:Nineveh Limestone (Greene Formation, Lower Permian; Clark Hill section, Monroe County, Ohio, USA) 1 (29410734980).jpg
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Nonmarine limestone in the Permian of Ohio, USA. (geologist for scale) The Upper Pennsylvanian to Lower Permian Dunkard Group of Ohio contains the youngest bedrock in the entire state. The unit consists of two stratigraphic formations: the Washington Formation (below) and the Greene Formation (above). This is a cyclothemic, nonmarine succession principally composed of shales, sandstones, lacustrine limestones, and thin coal beds. The light-colored horizons seen in the middle of the above photo are the Nineveh Limestone, a nonmarine carbonate unit in the Greene Formation (Lower Permian). These sediments were deposited in an ancient lake. The uppermost limestone bed of the Nineveh consists of cryptalgally-laminated micrite and dismicrite with fossil ostracods and ostracod vugs. Above that is a soft, argillaceous limestone to calcareous shale unit with a capping, two inch-thick coal bed called the Nineveh Coal (= weathered and covered and not visible here). Stratigraphy: upper series of the Nineveh Limestone, unit GR16 of Cross et al. (1950), Greene Formation, upper Dunkard Group, Lower Permian Locality: Clark Hill section - roadcut on the southeastern side of Long Ridge Road, south of Oppossum Creek, south-southeast of the town of Clarington, southeastern Alum Township, eastern Monroe County, eastern Ohio, USA (GPS: 39° 43.676’ North latitude, 80° 51.018’ West longitude) Reference cited: Cross et al. (1950) - Field guide for the special field conference on the stratigraphy, sedimentation and nomenclature of the Upper Pennsylvanian and Lower Permian strata (Monongahela, Washington and Greene Series) in the northern portion of the Dunkard Basin of Ohio, West Virginia and Pennsylvania. 107 pp. |
| Date | |
| Source | Nineveh Limestone (Greene Formation, Lower Permian; Clark Hill section, Monroe County, Ohio, USA) 1 |
| 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@N05/29410734980 (archive). It was reviewed on 6 December 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| current | 01:30, 6 December 2019 | | 4,000 × 3,000 (6.05 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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