Mancos_Shale_slopes_along_the_east_side_of_the_Strike_Valley.jpg (800 × 600 pixels, file size: 525 KB, MIME type: image/jpeg)
 | This is a file from the Wikimedia Commons. Information from its description page there is shown below. Commons is a freely licensed media file repository. You can help. |
Summary
USGS image from [1] Massive sandstone layers cap steep, barren, slope exposures of Mancos Shale along the east side of the Strike Valley. The Mancos Shale formed from marine sediments deposited in the Western Interior Seaway during the Late Cretaceous period. At its maximum extent about 100 million years ago, the Western Interior Seaway extended from the Arctic Ocean to the Gulf, and extended from the Cordilleran mountain ranges in the Nevada region eastward to the Mississippi Valley region. This seaway disappeared as the Laramide Orogeny uplifted the Rocky Mountain region beginning in the latest Cretaceous to the early Tertiary (about 50 million years ago). The region is still gradually rising today. The Mancos Shale can be subdivided into units from lowest to highest shown here: The Tununk Shale underlies the foreground valley;, the first ridge is the Ferron Sandstone Member; the second valley and gray slope is the Blue Gate Shale Member-(Blue Gate Member?), and the caprock on the distant ridge is the Emery Sandstone Member; the uppermost Masuk Member (mostly shale) is not visible in this image.
Licensing
|
This work is in the public domain in the United States because it is a work prepared by an officer or employee of the United States Government as part of that person’s official duties under the terms of Title 17, Chapter 1, Section 105 of the US Code.
Note: This only applies to original works of the Federal Government and not to the work of any individual U.S. state, territory, commonwealth, county, municipality, or any other subdivision. This template also does not apply to postage stamp designs published by the United States Postal Service since 1978. (See § 313.6(C)(1) of Compendium of U.S. Copyright Office Practices). It also does not apply to certain US coins; see The US Mint Terms of Use.
|
 |
| This file has been identified as being free of known restrictions under copyright law, including all related and neighboring rights. | ||
File history
Click on a date/time to view the file as it appeared at that time.
| Date/Time | Thumbnail | Dimensions | User | Comment | |
|---|---|---|---|---|---|
| current | 02:38, 16 March 2006 | | 800 × 600 (525 KB) | Mav | USGS image from [http://3dparks.wr.usgs.gov/capitol2/html/3d053.html] Massive sandstone layers cap steep, barren, slope exposures of Mancos Shale along the east side of the Strike Valley. The Mancos Shale formed from marine sediments deposited in the Wes |
File usage
Global file usage
The following other wikis use this file:
- Usage on ar.wikipedia.org
- Usage on cs.wikipedia.org
- Usage on fr.wikipedia.org
