Canyonlands National Park Entrada Formation

The Entrada Formation is composed of three members (listed from youngest to oldest): Moab Tongue, Slickrock and Dewey Bridge. Each has different characteristics due to changes in the depositional environment. The Arches of Arches National Park are usually in the Slickrock Member. This layer does not occur in Canyonlands.


Mid- to late-Jurassic (144 to 208 million years ago)

Depositional Environment

Varied between tidal flat (Dewey Bridge) to near-shore sand dunes.


Moab Tongue: Thin, red layer not heavily cross-bedded.

Slickrock: Red, cross-bedded, arch-forming sandstone.

Dewey Bridge: Lumpy, misshapen red sandstone


Entrada is one of the dominant sandstones in Arches National Park.

Blistering fast bump runs, face-melting groomer sessions, and brief soirees through the trees are all in a day's work...
Price subject to change | Available through
Currently Viewing Canyonlands National Park Entrada Formation
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 Entrada Formation