UGHNN013 (unnamed hot spring 15 meters south of Beach Spring) (8 June 2024) 3 : 無料・フリー素材/写真
UGHNN013 (unnamed hot spring 15 meters south of Beach Spring) (8 June 2024) 3 / James St. John
| ライセンス | クリエイティブ・コモンズ 表示 2.1 |
|---|---|
| 説明 | The unnamed hot spring seen here is given the catalog designation "UGHNN013" in the RCN database. It, and another nearby, unnamed hot spring (see elsewhere in this photo album) were extensively trampled in spring 2014 by large predators feeding at a carcass that settled here. The appearance of the spring changed significantly and the site has been recovering since then.The vent areas are surrounded by fine-grained sediments that have mudcracks. Mudcracks are diagnostic sedimentary structures indicating subaerial exposure of sediment surfaces, with alternating wet & dry conditions. They are much more common that raindrop imprints, which indicate the same environmental setting. Mudcracks are most likely to occur in fine-grained siliciclastic rocks, fine-grained carbonate sediments, and in some evaporitic successions. Mudcracks are distinctive and easy to identify, but they do vary in appearance. The cracks themselves vary in width, depth, and areal density. Mudcrack polygons also vary in size & shape.Locality: 15 meters south of Beach Spring, Geyser Hill Group, Upper Geyser Basin, Yellowstone, Wyoming, USA |
| 撮影日 | 2024-06-08 14:37:26 |
| 撮影者 | James St. John |
| タグ | |
| 撮影地 |