Geologic map of the Thompson Springs quadrangle, Grand County, Utah (M-239) Recreation Books Edward Abbey

Edward Abbey

The elevation of any point on the map can be estimated by referring to the elevations of the contour lines above and below it

you'll be hard pressed to make the most of the day

but a few reach 200 feet

identification tips

Geologic map of the Thompson Springs quadrangle, Grand County, Utah (M-239) Recreation Books Edward AbbeyBy: 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