File:Gray shale & bentonites (Benton Shale, Upper Cretaceous; Red Rock Canyon Open Space, Colorado Springs, Colorado, USA) 4.jpg
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Bentonite
Summary[edit]
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| Description |
English: Shales & bentonites in the Cretaceous of Colorado, USA.
The Benton Shale is a widespread marine shale unit in the Cretaceous of western America. It was deposited in the ancient Western Interior Seaway at a time of globally-high sea level. The thin, lighter-colored horizons in this dark gray shale exposure are volcanic ash beds. Such horizons are called "bentonites", which are named after the Benton Shale itself. Stratigraphy: Benton Shale, Upper Cretaceous Locality: slope exposure along the Lower Hogback Trail, Red Rock Canyon Open Space, western side of the town of Colorado Springs, western El Paso County, central Colorado, USA (~vicinity of 38° 50’ 54.92” North latitude, 104° 52’ 30.71” West longitude) |
| Date | |
| Source | https://www.flickr.com/photos/47445767@N05/49284499716/ |
| Author | James St. John |
| Object location |  | View this and other nearby images on: OpenStreetMap |  |
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This file is licensed under the Creative Commons Attribution 2.0 Generic license.
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This image was originally posted to Flickr by James St. John at https://flickr.com/photos/47445767@N05/49284499716 (archive). It was reviewed on 29 December 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 | 02:17, 29 December 2019 | | 3,008 × 2,000 (4.78 MB) | Ser Amantio di Nicolao (talk | contribs) | User created page with UploadWizard |
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