Canyonlands National Park Mancos Shale

This layer does not occur in Canyonlands.


Mid-Cretaceous (64 to 144 million years ago)

Depositional Environment

Near-shore regimes (e.g. tidal flats)


Slope forming, gray shales.


Slopes below the Book Cliffs along I-70 between Grand Junction, CO and Green River, UT. Floor of Cache Valley in Arches National Park.

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Currently Viewing Canyonlands National Park Mancos Shale
Featured Park
Zion National Park, a place home to the Narrows, Canyon Overlook, Emerald Pools, a petrified forest, a desert swamp, springs and waterfalls, hanging gardens, wildflowers, wildlife and more!
Featured Wildlife
The bighorn sheep is the mammalian symbol of Colorado Parks and Wildlife and Colorado's official animal. Colorado is home to the largest population of the species anywhere. The animals are five to six feet long with a tail three to six inches in length.
Currently Viewing Canyonlands National Park Mancos Shale