Brown, layered cliffs of the Sommerville Formation along the road to Hans Flat
NPS photo by Gary Cox
This layer does not occur within Canyonlands, but may be seen at neighboring Glen Canyon National Recreation Area.
Mid to late Jurassic (144 to 208 million years ago)
Coastal, shallow marine and tidal flats
Sandstone, shale, siltstone and gypsum forms slopes and cliffs
Exposed along the Green River and in cliffs above the road to Hans Flat Ranger Station in the Maze
Flash animations manage to simplify the story of Canyonlands.
Last Updated: 04/25/2015