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Making America's Best Idea Even Better
Canyonlands National ParkSeedling in Biological Soil Crust
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Canyonlands National Park
Mancos Shale
 
photo: Slopes of mancos shale
Slopes of mancos shale
 

This layer does not occur in Canyonlands.

Deposited
Mid-Cretaceous (64 to 144 million years ago)

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

Appearance
Slope forming, gray shales.

Example
Slopes below the Book Cliffs along I-70 between Grand Junction, CO and Green River, UT. Floor of Cache Valley in Arches National Park.
Interactive Geologic Atlas
Interactive Geologic Atlas
Flash animations manage to simplify the story of Canyonlands.
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Spanish Bottom on the Colorado River  

Did You Know?
At Spanish Bottom on the Colorado River, scientists discovered 260 feet of sediment below the water's surface. This could make Cataract Canyon one of the most actively filling canyons in the world.
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Last Updated: July 11, 2006 at 11:48 EST