Fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Clinton Furnace Road roadcut, south-southeast of Lyra, Ohio, USA) 3 : 無料・フリー素材/写真
Fossiliferous limestone (Lower Mercer Limestone, Middle Pennsylvanian; Clinton Furnace Road roadcut, south-southeast of Lyra, Ohio, USA) 3 / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | Limestone in the Pennsylvanian of Ohio, USA. (geology hammer for scale)The Pottsville Group is a Pennsylvanian-aged cyclothemic succession containing nonmarine shales, marine shales, siltstones, sandstones, coals, marine limestones, and chert ("flint"). The lower Pottsville dates to the late Early Pennsylvanian. The upper part dates to the early Middle Pennsylvanian. The Lower-Middle Pennsylvanian boundary is apparently somewhere near the Boggs Limestone horizon (?).This is a view of weathered and crack surfaces of the Lower Mercer Limestone, a Middle Pennsylvanian-aged, laterally persistent, marine limestone unit in the Pottsville Group of eastern Ohio, USA. It is richly fossiliferous, principally dominated by brachiopods and crinoid stems.This is the southernmost occurrence of Lower Mercer Limestone I have ever seen.Stratigraphy: Lower Mercer Limestone, Pottsville Group, lower Atokan Stage, lower Middle PennsylvanianLocality: talus block along the northern side of Clinton Furnace Road, ~0.1 miles east of the Monroe Road-Clinton Furnace Road intersection, south-southeast of the town of Lyra, southeastern Scioto County, far-southern Ohio, USA |
| 撮影日 | 2017-09-30 12:55:03 |
| 撮影者 | James St. John |
| タグ | |
| 撮影地 |