File:Fountain Paintpots 5.jpg
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editDescriptionFountain Paintpots 5.jpg |
English: Fountain Paint Pots - wet, thin mud in main pool with boiling-type bubbles at the surface.
Fountain Paint Pots, Fountain Group, Lower Geyser Basin, Yellowstone Hotspot, northwestern Wyoming, USA in August 2010 (above: looking ~N; below: looking ~ESE). Mud pots, or paint pots, are pools of thin to thick muddy material consisting of clay-sized grains of clay minerals mixed with varying amounts of water. Rising gases result in bursting bubbles of mud at the surface. The clay forms by chemical weathering of rhyolite lava, a common lithology in the Yellowstone Hotspot area. When rising hydrogen sulfide gas (H2S), exsolved from subsurface magma, reaches the top of the water table, oxidation occurs and sulfuric acid forms (H2SO4). The sulfuric acid reacts with the rhyolite, forming various clay minerals. Mud pots in Yellowstone tend to have thin mud in boreal spring and early summer and boiling-type bubbles appear at the surface. In boreal late summer and autumn, the mud is thick, which alters the bubble surfacing and bubble bursting behavior of rising gases. Fountain Paint Pots have various delicate shades of pinks, grays, yellows, and orangish-browns. The colors are from a variety of disseminated iron oxide species. |
Date | |
Source | https://www.flickr.com/photos/47445767@N05/8271572623/ |
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@N05/8271572623. 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. |
30 October 2020
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current | 20:59, 30 October 2020 | 960 × 565 (283 KB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/8271572623/ with UploadWizard |
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