• Spires of Cedar Mesa sandstone in Chesler Park (Needles District)

    Canyonlands

    National Park Utah

There are park alerts in effect.
show Alerts »
  • Some unpaved roads are closed

    Recent rains have caused extensive damage to some roads in the Needles District and some of the roads into the Maze District. More »

  • New backcountry requirements in effect

    Hard-sided bear containers are required for backpackers in parts of the Needles District. More »

Mancos Shale

photo: Slopes of mancos shale
Slopes of mancos shale
 

This layer does not occur in Canyonlands, but may be seen north of the park as slopes below the Book Cliffs on Interstate 70 between Green River, UT and Grand Junction, CO.

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

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

Appearance:
Slope forming, gray shales

Example:
Floor of Cache Valley in Arches National Park

Did You Know?

Tadpole Shrimp

Naturally occurring sandstone basins called “potholes” collect rain water and wind-blown sediment, forming tiny ecosystems where a fascinating collection of plants and animals live. Tadpole shrimp, fairy shrimp and many insects can be found in potholes. More...