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

Original file ‎(3,008 × 2,000 pixels, file size: 4.78 MB, MIME type: image/jpeg)

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 View this and other nearby images on: OpenStreetMap


Licensing

w:en:Creative Commons
attribution
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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

Captions

Bentonite

Items portrayed in this file

depicts

copyright status

copyrighted

copyright license

Creative Commons Attribution 2.0 Generic

captured with

Nikon D70s

inception

29 October 2010

coordinates of depicted place

38°50'54.920"N, 104°52'30.709"W

source of file

file available on the internet

operator: Flickr
described at URL: https://www.flickr.com/photos/47445767@N05/49284499716

exposure time

0.005 second

f-number

5.3

focal length

90 millimetre

ISO speed

400

media type

image/jpeg

instance of

photograph

File history

Click on a date/time to view the file as it appeared at that time.

Date/TimeThumbnailDimensionsUserComment
current02:17, 29 December 20193,008 × 2,000 (4.78 MB)Ser Amantio di NicolaoUser created page with UploadWizard
The following pages on the English Wikipedia use this file (pages on other projects are not listed):

Global file usage

The following other wikis use this file:

  • Usage on mk.wikipedia.org
    • Бентонит
  • Usage on tr.wikipedia.org
    • Bentonit

Metadata

Retrieved from "https://en.wikipedia.org/wiki/File:Gray_shale_%26_bentonites_(Benton_Shale,_Upper_Cretaceous;_Red_Rock_Canyon_Open_Space,_Colorado_Springs,_Colorado,_USA)_4.jpg"