File:Hoover Dam Tuff (Middle Miocene, ~14 Ma; Hoover Dam, Arizona side of Black Canyon, USA) 2.jpg
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| Description |
English: Volcanic tuffs from the Miocene of Arizona, USA.
These samples are from Black Canyon at Hoover Dam, on the Nevada-Arizona border. The rocks in the area include volcanics, siliciclastic sedimentary rocks, and intrusive igneous rocks. The rocks seen here are Miocene-aged volcanic tuffs (welded ash-flow tuffs), which are clastic-textured, extrusive igneous rocks formed during explosive eruptions. Stratigraphy: Hoover Dam Tuff, early Middle Miocene, ~13.9 to 14.2 Ma Locality: roadside exposure along Route 93, adjacent to parking lots, Arizona side of Hoover Dam, northwestern margin of Mohave County, far-northwestern Arizona, USA |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/50667449607/ |
| 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@N05/50667449607. It was reviewed on 1 December 2020 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 | 16:14, 1 December 2020 | | 3,064 × 2,334 (4.64 MB) | Ser Amantio di Nicolao (talk | contribs) | Uploaded a work by James St. John from https://www.flickr.com/photos/47445767@N05/50667449607/ with UploadWizard |
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