Cave in Bellevue Limestone (Upper Ordovician; Maysville West upper roadcut, Kentucky, USA) 4 : 無料・フリー素材/写真
Cave in Bellevue Limestone (Upper Ordovician; Maysville West upper roadcut, Kentucky, USA) 4 / 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 | Cave developed in Ordovician limestones in Kentucky, USA.This outcrop is in the famous Cincinnatian Series of the tristate area of Ohio-Kentucky-Indiana. Rocks in the Cincinnatian were deposited in relatively shallow marine facies during the Late Ordovician. The Cincinnatian succession is mostly interbedded limestones and shales. Most of the limestones are event beds (= tempestites), deposited during ancient storms.Seen here is a cave developed in the Bellevue Limestone, a limestone-rich Cincinnatian unit. This cave was revealed during road construction at the Maysville West upper cut in Kentucky - it is present on both sides of the road. The cave is partially to completely filled with sediments. One piece of detached travertine speleothem was collected from here.The cave appears to be developed along the strike of a minor thrust fault present in the section. The fault acted as a conduit for groundwater.Stratigraphy of cave-hosting rocks: Bellevue Limestone, Maysvillian Stage, middle Cincinnatian Series, Upper OrdovicianLocality: Maysville West upper cut - roadcut on the southeastern side of Rt. 62/Rt. 68, just south of bridge over Lawrence Creek & south of the Harsha Bridge over the Ohio River, northern Kentucky, USA (~vicinity of 38° 40’ 04.23" North latitude, 83° 48' 07.08" West longitude) |
| 撮影日 | 2009-11-13 16:08:36 |
| 撮影者 | James St. John |
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