Duchesne River, Uinta and Bridger Formations

Duchesne River Fm, Uinta Formation (south of Uinta Mtns.) and Bridger Formation (north of Uinta Mtns.).
State Utah
Name Duchesne River, Uinta and Bridger Formations
Geologic age Middle Eocene to Early Oligocene
Lithologic constituents
Sedimentary > Clastic > Mixed-clastic > Sandstone-mudstone (Bed)
Igneous > Volcanic (Volcaniclastic)
Sedimentary > Clastic > Conglomerate (Bed)
Igneous > Volcanic > Felsic-volcanic (Pyroclastic-tuff)
Comments lacustrine and fluvial

Hintze, L.F., 1980, Geologic map of Utah: Utah Geological and Mineral Survey, scale 1:500,000.

Johnson, R.C., 1985, Early Cenozoic history of the Uinta and Piceance Creek Basins, Utah and Colorado, with special reference to the development of Eocene Lake Uinta, in Flores, R.M., and Kaplan, S.S., eds., Cenozoic Paleogeography of west-central United States, Rocky Mountain Symposium 3, Society of Economic Geologists and Paleontologists, p. 247-276.

Fouch, T.D., Lawton, T.F., Nichols, D.J., Cashion, W.B., and Cobban, W.A., 1983, Patterns and timing of synorogenic sedimentation in Upper Cretaceous rocks of central and northeast Utah, in, Reynolds, M.W., and Dolly, E.D., eds., Mesozoic Paleogeography of the West-Central United States, Rocky Mountain Paleogeography Symposium 2: Rocky Mountain Section Society of Economic Paleontologists and Mineralogists, p. 305-336.

Bryant, B., Naeser, C.W., Marvin, R.F., and Mehnert, H.H., 1987, Ages of late Paleogene and Neogene tuffs and the beginning of rapid regional extension, eastern boundary of the Basin and Range province near Salt Lake City, Utah: U. S. Geological Survey Bulletin 17870 J,K, p. J1-J22.

Rowley, P.D., Hansen, W.R., Tweto, O., and Carrara, P.E., 1985, Geologic map of the Vernal 1ø x 2ø quadrangle, Colorado, Utah, and Wyoming: U.S. Geological Survey Miscellaneous Investigations Series I-1526, scale 1:250,000.


Hamblin, A.H., Sarjeant, W. A. S., and Spalding, D. A. E., 1999, Vertebrate footprints in the Duchesne River and Uinta formations (middle to late Eocene), Uinta Basin, Utah: Utah Geological Survey Miscellaneous Publication , v. 99-1, p .443-454.

NGMDB product
Counties Daggett - Duchesne - Summit - Uintah - Utah - Wasatch