File:Coralloids (Martel Avenue or Hawkins Pass, Mammoth Cave, Kentucky, USA) 1 (37286654594).jpg
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| Description |
Speleothem (= "cave formations") refers to all secondary mineral deposits in caves. Most speleothem is composed of calcium carbonate (CaCO3 - usually in the form of calcite, but sometimes aragonite). Calcareous speleothem is referred to using the rock name "travertine", a crystalline-textured, chemical sedimentary rock formed by precipitation from water. Coralloids are pustulose to nodulose, small to moderately large speleothem. They are also known as knobstone and cave popcorn. These examples are on a limestone wall along Martel Avenue or Hawkins Pass, near Cathedral Dome in western Kentucky's Mammoth Cave, the longest cave on Earth. The system has 412 mapped miles, as of fall 2017. |
| Date | |
| Source | Coralloids (Martel Avenue or Hawkins Pass, Mammoth Cave, Kentucky, USA) 1 |
| 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@N05/37286654594 (archive). It was reviewed on 13 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 | 17:48, 13 October 2019 | | 4,000 × 3,000 (5.12 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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