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Canyonlands National Park Seedling in Biological Soil Crust
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Canyonlands National Park
Sommerville Formation

This layer does not occur in Canyonlands.

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

Depositional Environment
Coastal, shallow marine and tidal flats

Appearance
Sandstone, shale, siltstone and gypsum forms slopes and cliffs

Example
Exposed along the Green River.

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Last Updated: July 01, 2011 at 11:53 MST