File:Crater Spring (9 August 2011) 1.jpg
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| Description |
English: Crater Spring, eastern Back Basin, southeastern Norris Geyser Basin, Yellowstone Hotspot, northwestern Wyoming, USA on 9 August 2011.
This bluish-green pool is distinctive in having significantly projecting ledges of geyserite (siliceous sinter) (see the shadowed areas in the pool). Some of these geyserite ledges collapsed long ago, resulting in scattered, angular geyserite blocks. The undercut geyserite ledges formed by erosive hydraulic action during energetic hydrothermal activity in former times. In general, Crater Spring has been observed to be a small perpetual spouter. Geyser activity occurred here in 1983 and 1984 with water spouting northward at an angle over 20 feet high. More recently, it has been a relatively quiet pool. The water here is very hot, acidic, chloride-rich, and sulfate-rich, as are many hydrothermal features in Norris Back Basin. |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/8273473042/ |
| Author | James St. John |
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/8273473042. It was reviewed on 30 October 2020 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 | 19:38, 30 October 2020 | | 960 × 593 (404 KB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/8273473042/ with UploadWizard |
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