Fossiliferous limestone (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, USA) 2 : 無料・フリー素材/写真
Fossiliferous limestone (Ashlock Formation, Upper Ordovician; Paint Lick Elementary School outcrop, Garrard County, Kentucky, 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 |
|---|---|
| 説明 | Limestones in the Ordovician of Kentucky, USA.These are Upper Ordovician fossiliferous limestones of the Ashlock Formation, which is correlative with the famous Cincinnatian outcrop belt in the Cincinnati, Ohio area. I've seen two or three asserted members identified for this area, so I'm not sure about the sub-formation level stratigraphy at this site. The fossils are similar to what's seen in the Maysvillian and/or Richmondian Stages of the type Cincinnatian. Observed fossils here included silicified stromatoporoids, brachiopods (including Platystrophia ponderosa - also known as Vinlandostrophia ponderosa - and Hebertella), ramose bryozoans, encrusting sheet bryozoans, bivalves, gastropods, nautiloid cephalopods, and corals. The rocks range from micrites (lime mudstones) to wackestones to packstones.Stratigraphy: Ashlock Formation, Cincinnatian Series, Upper OrdovicianLocality: Paint Lick Elementary School Outcrop - roadcut along (new) Route 52, across the road from Paint Lick Elementary School, near the town of Point Leavell, Garrard County, Kentucky, USA. (37° 35’ 17.25” North latitude, 84° 28’ 15.49” West longitude) |
| 撮影日 | 2018-03-13 11:24:02 |
| 撮影者 | James St. John |
| タグ | |
| 撮影地 |