File:Pumice-rich Tuff Wildhorse Springs USGS ofr-98-0524.jpg
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English: Slightly edited USGS caption: Shows pumice-rich tuff near Wildhorse Springs, north of The Dell (Utah). Pumice forms beds as much as several meters thick, massive to graded with a sharp base, as shown here. These pumice beds were probably formed by small ash flows. |
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| Source | PHOTOGRAPHS OF TOPAZ MOUNTAIN RHYOLITE, part of SLIDES OF THE FLUORSPAR, BERYLLIUM, AND URANIUM DEPOSITS AT SPOR MOUNTAIN, UTAH, by David A. Lindsey of United States Geologic Survey (USGS) |
| Author | USGS |
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This image is in the public domain in the United States because it only contains materials that originally came from the United States Geological Survey, an agency of the United States Department of the Interior. For more information, see the official USGS copyright policy.
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| Date/Time | Thumbnail | Dimensions | User | Comment | |
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| current | 04:03, 12 November 2020 | | 266 × 400 (31 KB) | Jstuby (talk | contribs) | Uploaded a work by USGS from [https://pubs.usgs.gov/of/1998/ofr-98-0524/TOPAZ.HTM PHOTOGRAPHS OF TOPAZ MOUNTAIN RHYOLITE], part of SLIDES OF THE FLUORSPAR, BERYLLIUM, AND URANIUM DEPOSITS AT SPOR MOUNTAIN, UTAH, by David A. Lindsey of United States Geologic Survey (USGS) with UploadWizard |
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