Curtis Formation

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The light-colored, grayish-green layer in the middle of the escarpment is the Curtis Formation (below the Sommerville).

NPS photo by Gary Cox


This layer does not occur in Canyonlands, but may be seen in nearby Capitol Reef National Park.

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

Depositional Environment:
Shallow marine

Sandstone, shale and gypsum forms slopes

Exposed along the Green River

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