Fossiliferous limestone (Skelley Member, Upper Pennsylvanian; Caldwell West outcrop, Ohio, USA) 2 : 無料・フリー素材/写真
Fossiliferous limestone (Skelley Member, Upper Pennsylvanian; Caldwell West outcrop, Ohio, USA) 2 / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
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| 説明 | Fossiliferous limestone from the Pennsylvanian of Ohio, USA. (~11.6 cm across at its widest)This limestone is from the Skelley Member, the youngest fully marine unit in all of Ohio (marginal marine fossils occur in the Permian-aged lower Washington Formation; reports of marine fossils in the Monongahela Group of far-eastern Ohio are erroneous, based on misidentification of fossil microconchids as Spirorbis worm tubes). The Skelley is one of several marine limestone intervals in the Conemaugh Group, an Upper Pennsylvanian cyclothemic succession in eastern Ohio that contains nonmarine shales, marine shales, siltstones, sandstones, coals, marine limestones, and chert ("flint").Stratigraphy: limestone facies of the Skelley Member, upper Conemaugh Group, lower Virgilian Series, Upper PennsylvanianLocality: Caldwell West outcrop, roadcut on the northern side of Rt. 78, between Arnold Road and Interstate-77, just west of the town of Caldwell, west-central Noble County, eastern Ohio, USA (39° 44' 22.82" North latitude, 81° 32' 17.95" West longitude) |
| 撮影日 | 2016-12-06 23:32:15 |
| 撮影者 | James St. John |
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