File:Gray shale & bentonites (Benton Shale, Upper Cretaceous; Red Rock Canyon Open Space, Colorado Springs, Colorado, USA) 4.jpg

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Summary

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 location38° 50′ 54.92″ N, 104° 52′ 30.71″ W Kartographer map based on OpenStreetMap.View this and other nearby images on: OpenStreetMapinfo


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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.

29 December 2019

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Bentonite

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29 October 2010

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38°50'54.920"N, 104°52'30.709"W

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current07:47, 29 December 2019Thumbnail for version as of 07:47, 29 December 20193,008 × 2,000 (4.78 MB)wikimediacommons>Ser Amantio di NicolaoUser created page with UploadWizard

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