Canyonlands National Park Morrison Formation

The Morrison Formation is composed of three members (listed from youngest to oldest): Brushy Basin, Salt Wash and Tidwell. Each has different characteristics due to changes in the depositional environment. This layer does not occur in Canyonlands.

Deposited

Late Jurassic (144 to 208 million years ago)

Depositional Environment

Varied between river, tidal flat and shallow marine

Appearance

Brushy Basin: multicolored Bentonite clays (volcanic ash)

Salt Wash: Light-colored, ledge-forming sandstone.

Tidwell: red marine sandstones frequently containing chert.

Notes

The Salt Wash Member is a source of Uranium which was mined throughout the Moab area. Dinosaur tracks and fossils also appear in the Morrison Formation.

Example

Visible in the northern parts of Arches (Salt Valley) and along Highway 191 north of Moab.

$109.95
The Thule Traverse Fit Kit pairs with the Thule Traverse Foot Pack, working to attach Thule's performance crossbars to...
Price subject to change | Available through Backcountry.com
Currently Viewing Canyonlands National Park Morrison Formation
Featured Park
Rising above a scene rich with extraordinary wildlife, pristine lakes, and alpine terrain, the Teton Range stands monument to the people who fought to protect it. These are mountains of the imagination. Mountains that led to the creation of Grand Teton National Park where you can explore over two hundred miles of trails, float the Snake River or enjoy the serenity of this remarkable place.
Featured Wildlife
The pika is a close relative of the rabbits and hares, with two upper incisors on each side of the jaw, one behind the other. Being rock-gray in color, pikas are seldom seen until their shrill, metallic call reveals their presence.
Currently Viewing Canyonlands National Park Morrison Formation