Wasatch/Colton Formations and Flagstaff Limestone

Wasatch/Colton Formations and Flagstaff Limestone.
State Utah
Name Wasatch/Colton Formations and Flagstaff Limestone
Geologic age Early to Middle Eocene
Lithologic constituents
Sedimentary > Clastic > Mixed-clastic > Sandstone-mudstone (Bed)alluvial deposit of Colton Formation
Sedimentary > Carbonate > Limestone (Bed)at base, equals Flagstaff Limestone
Sedimentary > Coal (Lens)algal coal in Flagstaff (Johnson, 1985)
Comments non-marine. Flagstaff in Unita basin called Flagstaff Member of Green River Formation by Fouch (1976)

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

Hintze, L.F., 1988, Geologic History of Utah: Brigham Young University Geology Studies Special Publication 7, 202 p.

Franczyk, K.J., Fouch, T.D., Johnson, R.C., Molenaar, C.M., and Cobban, W.A., 1992, Cretaceous and Tertiary paleogeographic reconstructions for the Uinta-Piceance Basin study area, Colorado and Utah: U.S. Geological Survey Bulletin 1787-Q, 37 p.


Fouch, T.D., 1976, Revision of the lower part of the Tertiary System in the central and western Uinta Basin, Utah: U.S. Geological Survey Bulletin 1405-C, 6 p.


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.

NGMDB product
Counties Carbon - Daggett - Duchesne - Emery - Grand - Summit - Uintah - Utah - Wasatch