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Image: Grand Canyon Supergroup Hakatai Shale with Basalt Dike

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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.
Title: Grand Canyon Supergroup Hakatai Shale with Basalt Dike
Credit: Flickr: Grand Canyon Supergroup_ Hakatai Shale with Basalt Dike_0026
Author: Public Domain
Permission: Public Domain
Usage Terms: Public domain
License: Public domain
Attribution Required?: No

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