File:De Chelly Sandstone (Lower Permian; Canyon de Chelly, Arizona, USA) 53.jpg
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English: Sandstones in the Permian of Arizona, USA.
The cliffs of this Arizona canyon are composed of the Lower Permian De Chelly Sandstone (pronounced "De Shay"). Most of the unit is horizontally-bedded and cross-bedded quartzose sandstones representing ancient sand sheets and desert sand dunes. A vast sand dune "sea" was present at the time - such an environment is called an "erg" (a modern example is northern Africa's Sahara Desert). The reddish-brown coloration is from hematite (iron oxide, Fe2O3). Stratigraphy: De Chelly Sandstone, Leonardian Stage, Lower Permian Locality: view from Junction overlook, southern rim of Canyon de Chelly, Canyon de Chelly National Monument, northeastern Arizona, USA |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/51980485797/ |
| 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@N05/51980485797. It was reviewed on 7 April 2022 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 | 06:27, 7 April 2022 | | 3,005 × 1,794 (5.72 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/51980485797/ with UploadWizard |
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