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Canyonlands National Park - Sommerville

Home > Canyonlands > Park Info > Geology > 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.

::Highlights

∙ Island in the Sky

∙ The Maze District

∙ The Needles

::Lodging

::Maps

::Park Info

∙ Geology

- Desert Varnish

- Grabens

- Needles Geology

- Upheaval Dome

- Green River Formation

- Mesa Verde Group

- Mancos Shale

- Dakota Sandstone

- Burro Canyon

- Morrison Formation

- Sommerville

- Curtis Formation

- Entrada Formation

- Carmel Formation

- Navajo Sandstone

- Kayenta Formation

- Wingate Sandstone

- Chinle Formation

- Moenkopi Formation

- Cutler Group

- Cutler Undivided

- Honaker Trail Formation

- Paradox Formation

- White Rim Sandstone

- Organ Rock Shale

- Cedar Mesa

- Rock Strata

∙ Plants and Wildlife

∙ Nature and Science

::Planning

∙ Fees

∙ Plan Your Visit

∙ Camping

∙ Climate

∙ Activities

∙ Contacts

::Books

::Photo Gallery

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Canyonlands National Park - Sommerville