File:Chert nodule in carbonate (Ste. Genevieve Limestone, Middle Mississippian; Diamond Caverns, Kentucky, USA) (31857702845).jpg
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| Description |
The vertically-oriented structure that is slightly projecting from the limestone cave wall is a chert nodule. Chert (also known as "flint"), is a cryptocrystalline quartzose sedimentary rock. Chert nodules in limestone are usually diagenetic chert masses, formed by dissolution and remobilization of silica after burial. This cave wall is part of Diamond Caverns in Kentucky, which is developed in the Ste. Genevieve Limestone (upper Meramecian Series, upper Middle Mississippian). Locality: Diamond Caverns, ~1.7 air-miles north-northwest of the town of Park City, northwestern Barren County, west-central Kentucky, USA |
| Date | |
| Source | Chert nodule in carbonate (Ste. Genevieve Limestone, Middle Mississippian; Diamond Caverns, Kentucky, USA) |
| Author | James St. John |
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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/31857702845 (archive). It was reviewed on 14 October 2019 by FlickreviewR 2 and was confirmed to be licensed under the terms of the cc-by-2.0. |
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 19:48, 14 October 2019 | | 4,000 × 3,000 (4.92 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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