Stylolites (Ste. Genevieve Limestone, Middle Mississippian; Crystal Onyx Cave, near Cave City, Kentucky, USA) 2 : 無料・フリー素材/写真
Stylolites (Ste. Genevieve Limestone, Middle Mississippian; Crystal Onyx Cave, near Cave City, 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 |
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| 説明 | Crystal Onyx Cave is a relatively small, speleothem-rich cave on the eastern flank of Prewitts Knob, southwest of the town of Cave City, Kentucky, USA. The walls of the cave are limestones and dolostones of the Ste. Genevieve Limestone (upper Middle Mississippian).Crystal Onyx Cave was discovered in 1960 as a sinkhole. The name of the cave refers to the whitish-colored travertine (composed of calcite). Fifty-three Indian bones dating to about 680 B.C. were found wrapped up at the bottom of the main shaft of this cave.The irregularly-horizontal structures seen here are stylolites in a cave passage wall. Stylolites are pressure dissolution features that frequently have the appearance of a hospital EKG reading. These occur in many limestones, dolostones, and some marbles, especially in or near orogenic belts.Locality: Prewitts Knob, ~2 air miles southwest of Cave City, northwestern Barren County, southwest-central Kentucky, USA (37° 06' 36.27" North latitude, 85° 58' 26.12" West longitude) |
| 撮影日 | 2018-09-01 18:25:23 |
| 撮影者 | James St. John |
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