File:Coralloids (Wind Cave, Black Hills, South Dakota, USA) 11.jpg
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| Description |
English: Coralloids in a cave in South Dakota, USA.
The pustulose to nodulose structures seen here are coralloids, also known as knobstone or cave popcorn. There are multiple proposed origins of knobstone, including: 1) water seeping through cave bedrock and through cave popcorn itself 2) thin films of water flowing over wall irregularities 3) splash from dripping water 4) water moving by capillary action from pools into walls 5) condensation water 6) aerosols Locality: Wind Cave, southern Black Hills, southwestern South Dakota, USA |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/52956540082/ |
| 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@N05/52956540082. It was reviewed on 7 June 2023 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 | |
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| current | 15:10, 7 June 2023 | | 2,721 × 2,848 (5.98 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/52956540082/ with UploadWizard |
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