Sandstone & mudshale (Henley Member, Borden Formation, Lower Mississippian; Tener Mountain roadcut, southern Ohio, USA) 10 : 無料・フリー素材/写真
Sandstone & mudshale (Henley Member, Borden Formation, Lower Mississippian; Tener Mountain roadcut, southern Ohio, USA) 10 / 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 | Interbedded mudshale and sandstone from the Mississippian of Ohio, USA.This is part of the Borden Formation, a significant unit in the Lower Mississippian of Kentucky, Indiana, and Ohio. It represents an ancient deltaic succession. Prodeltaic, delta front, and delta top deposits are present in the Borden. Named members in eastern Kentucky and southern Ohio include (from bottom to top) the Henley Member (or Henley Bed), Farmers Member, Nancy Member, Cowbell Member, and Nada Member.The slabs are eroded from relatively hard, jointed, quartzose sandstone beds - they probably represent turbidite deposits (underwater sediment slides). The slope is composed of soft, erosion-prone shales of prodeltaic origin. The reddish shales are thought to be derived from erosion of paleosols in the Cincinnati Arch area, possibly ancient soils developed atop Queenston Shale redbeds.Stratigraphy: Henley Member, Borden Formation (formerly referred to as the Cuyahoga Formation), Lower MississippianLocality: Tener Mountain roadcut along the northwestern side of Rt. 32 (= Appalachian Highway), just northeast of the Rt. 32-Union Hill Road intersection, just southwest of the Adams County-Pike County line, far-northeastern Adams County, southern Ohio, USA (39° 01' 12.88" North latitude, 83° 16' 43.16" West longitude) |
| 撮影日 | 2019-10-10 13:27:32 |
| 撮影者 | James St. John |
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