Grand Canyon Supergroup Hakatai Shale with Basalt Dike

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https://dewiki.de/b/30b828

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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.

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Public domain

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Flickr: Grand Canyon Supergroup_ Hakatai Shale with Basalt Dike_0026

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