File:Hydrothermally altered volcanic rocks (Quaternary; Inspiration Point, Grand Canyon of the Yellowstone, Yellowstone, Wyoming, USA) 10 (47707679091).jpg
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| Description |
Weathered, hydrothermally altered volcanic rocks in the Quaternary of Wyoming, USA. Hydrothermal metamorphism refers to intense alteration of rocks by superheated groundwater. The altered volcanic rocks seen here are in the Grand Canyon of the Yellowstone River, in northwestern Wyoming. Yellowstone is a hotspot volcano having over 100,000 surficial hydrothermal features. These take the form of hot springs, geysers, fumaroles, and mudpots. The rocks of the canyon include rhyolite lava flows, rhyolitic volcanic tuffs, and some sedimentary deposits - all are geologically young and date to the Quaternary. Active and dormant hydrothermal areas are plentiful in the canyon. Alteration has resulted in the rocks taking on many colors: yellows, pinks, reds, and oranges (see elsewhere in this photo album). Locality: outcrop along tourist trail at Inspiration Point, northern rim of the Grand Canyon of the Yellowstone, northwestern Wyoming |
| Date | |
| Source | Hydrothermally altered volcanic rocks (Quaternary; Inspiration Point, Grand Canyon of the Yellowstone, Yellowstone, Wyoming, USA) 10 |
| 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@N05/47707679091 (archive). It was reviewed on 10 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 | 02:01, 10 October 2019 | | 3,968 × 2,976 (5.61 MB) | Ser Amantio di Nicolao (talk | contribs) | Transferred from Flickr via #flickr2commons |
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