Geologic map of the Thompson Springs quadrangle, Grand County, Utah (M-239) Recreation Books Includes "fast facts" and "did

Includes "fast facts" and "did you know" questions and insights

panoramic overlooks

all share a common need- a place to ride

and British Columbia

and Sequoia National Park

Geologic map of the Thompson Springs quadrangle, Grand County, Utah (M-239) Recreation Books Includes "fast facts" and "didBy: H. H. Doelling and P. Kuehne The Thompson Springs quadrangle is located in east central Utah along the Interstate 70 (I 70) corridor. The geology is dominated by the Upper Cretaceous Mancos Shale, which was deposited in the Western Interior Seaway. Exposed strata range in age from Late Jurassic to Late Cretaceous and include (in ascending order) the Brushy Basin Member of the Morrison Formation, Cedar Mountain Formation (Yellow Cat, Poison Strip