Dissolution-pitted dolostone (Joppa Member, Ste. Genevieve Limestone, Middle Mississippian; Diamond Caverns, Kentucky, USA) 34 : 無料・フリー素材/写真
Dissolution-pitted dolostone (Joppa Member, Ste. Genevieve Limestone, Middle Mississippian; Diamond Caverns, Kentucky, USA) 34 / 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 | The light-colored rock shown here is dolostone, which is composed of dolomite (CaMg(CO3)2 - calcium magnesium carbonate). This cave wall is part of Diamond Caverns in Kentucky, which is developed in the Ste. Genevieve Limestone (upper Meramecian Series, upper Middle Mississippian). The light-colored dolostone is in the Joppa Member.The distinctive pitting is characteristic of Joppa Member dolostones in this & nearby caves. The pits form by differential dissolution by slightly acidic groundwater.Locality: Diamond Caverns, ~1.7 air-miles north-northwest of the town of Park City, northwestern Barren County, west-central Kentucky, USA |
| 撮影日 | 2007-07-08 16:33:48 |
| 撮影者 | James St. John |
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