Grand_Canyon_Supergroup_Hakatai_Shale_with_Basalt_Dike.jpg
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| Description |
At Hance Creek, Basalt Dikes shoot through the Hakatai Shale, a geologic wonder easily seen from the end of the New Hance Trail. NPS Photo by: Carl Bowman Hakatai Shale Thickness: 445-985 feet This colorful formation contains layers of red sandstones, red shales, and blue to purple shales. As the sea level dropped, the environment slowly changed from a shallow sea to coastal mud flats. Mudcracks, raindrop impressions, and cross-beds are found in this layer. |
| Date | |
| Source | Flickr : Grand Canyon Supergroup_ Hakatai Shale with Basalt Dike_0026 |
| Author | Public Domain |
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Permission
( Reusing this file ) |
Public Domain |
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This image or media file contains material based on a work of a National Park Service employee, created as part of that person's official duties. As a work of the U.S. federal government , such work is in the public domain in the United States. See the NPS website and NPS copyright policy for more information. |
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