Cedar Mountain Formation

Usage of Geologic Unit Name:
Cedar Mountain Formation (CO*,UT*)
Cedar Mountain Formation of Dakota Group (CO)
Cedar Mountain Shale of Dakota Group (CO)
Cretaceous, Early*
Albian, late*
Cretaceous, Late?* (local)
Cenomanian?, early* (local)
Geologic Province:
Great Basin province*
Green River basin*
Paradox basin*
Piceance basin*
Uinta basin*
Wasatch uplift
Areal Extent:

Type Locality:
Southwest flank of Cedar Mountain, Emery Co., UT (Stokes, 1944).

Formation rank: /Buckhorn Conglomerate Member (CO*,UT*).

Unit Name History:
Named (Stokes, 1944). Revised; Areal limits; Overview (Stokes, 1952). Revised (Young, 1959). Areal limits (Cullins, 1969). Mapped 1:24k in southwest Moffat Co, CO (Rowley and Hansen, 1979). Overview (Craig, 1981). Age modified (Kowallis and Heaton, 1984). Biostratigraphic dating; Areal limits (Tschudy and others, 1984). Areal limits (Witkind and others, 1986; Schwans, 1988). Isotopic dating using fission track and K/Ar; Areal limits (Willis and Kowallis, 1988). Overview; Areal limits (Weiss and Roche, 1988). Age modified (Molenaar and Cobban, 1991).


Stokes, W.L., 1944, Morrison formation and related deposits in and adjacent to the Colorado Plateau: Geological Society of America Bulletin, v. 55, no. 8, p. 951-992.

Stokes, W.L., 1952, Lower Cretaceous in Colorado Plateau: American Association of Petroleum Geologists Bulletin, v. 36, no. 9, p. 1766-1776.

Young, R.G., 1959, Cretaceous deposits of the Grand Junction area, Garfield, Mesa, and Delta Counties, Colorado, IN Symposium on Cretaceous rocks of Colorado and adjacent areas; Washakie, Sand Wash, and Piceance basins: Rocky Mountain Association of Geologists Field Conference Guidebook, no. 11, p. 1-8.

Cullins, H.L., 1969, Geologic map of the Mellen Hill quadrangle, Rio Blanco and Moffat Counties, Colorado: U.S. Geological Survey Geologic Quadrangle Map, GQ-835, 1 sheet, scale 1:24,000.

Rowley, P.D. and Hansen, W.R., 1979, Geologic map of the Plug Hat quadrangle, Moffat County, Colorado: U.S. Geological Survey Geologic Quadrangle Map, GQ-1514, 1 sheet, scale 1:24,000.

Craig, L.C., 1981, Lower Cretaceous rocks, southwestern Colorado and southeastern Utah, IN Wiegand, D.L., Geology of the Paradox basin: Rocky Mountain Association of Geologists Field Conference Guidebook, p. 195-200.

Kowallis, B.J. and Heaton, J.S., 1984, Fission-track stratigraphy of Upper Jurassic and Lower Cretaceous bentonites from the Morrison and Cedar Mountain Formations of central Utah [abs.]: Geological Society of America Abstracts with Programs, v. 16, no. 6, 97th Annual Meeting, Reno, NV, November 5-8, 1984, p. 565.

Tschudy, R.H., Tschudy, B.D. and Craig, L.C., 1984, Palynological evaluation of Cedar Mountain and Burro Canyon Formations, Colorado Plateau: U.S. Geological Survey Professional Paper, 1281, 24 p.

Witkind, I.J., Standlee, L.A. and Maley, K.F., 1986, Age and correlation of Cretaceous rocks previously assigned to the Morrison(?) Formation, Sanpete-Sevier Valley area, central Utah: U.S. Geological Survey Bulletin, 1584, 9 p.

Schwans, Peter, 1988, Depositional response of Pigeon Creek Formation, Utah, to initial fold-thrust belt deformation in a differentially subsiding foreland basin, IN Schmidt, C.J., and Perry, W.J., Jr., editors, Interaction of the Rocky Mountain foreland and the Cordilleran thrust belt: Geological Society of America Memoir, 171, p. 531-556.

Weiss, M.P. and Roche, M.G., 1988, The Cedar Mountain Formation (Lower Cretaceous) in the Gunnison Plateau, central Utah, IN Schmidt, C.J., and Perry, W.J., Jr., editors, Interaction of the Rocky Mountain foreland and the Cordilleran thrust belt: Geological Society of America Memoir, 171, p. 557-569.

Willis, G.C. and Kowallis, B.J., 1988, Newly recognized Cedar Mountain Formation in Salina Canyon, Sevier County, Utah: Brigham Young University Geology Studies, v. 35, p. 57-61.

Molenaar, C.M. and Cobban, W.A., 1991, Middle Cretaceous stratigraphy on the south and east sides of the Uinta basin, northeastern Utah and northwestern Colorado, IN Evolution of sedimentary basins; Uinta and Piceance basins: U.S. Geological Survey Bulletin, 1787-P, p. P1-P34.

Sorensen, Andrew C., Ludvigson, Greg A., Gonzalez, Luis A., Carpenter, Scott J., Joeckel, Robert M., Kirkland, Jim I, 2002, Petrography and diagenesis of palustrine carbonate beds in theEarly Cretaceous Cedar Mountain Formation, eastern Utah: Geological Society of America,Abstracts with Programs v. 34, no. 6, pp.17-18.

Goldberg, Patricia, 2003, Faunal composition, non-marine vertebrates, of the upper Cedar Mountain Formation (Cretaceous., Albian-Cenomanian), central Utah: University of Oklahoma, Norman, PhD dissertation, unspecified pages.

Kirkland, James I., Cifelli, Richard L., Britt, Brooks B., Burge, Donald L., DeCourten, Frank L., Eaton, Jeffrey G., Parrish, J. Michael, 1991, Distribution of vertebrate faunas in the Cedar Mountain Formation, east-central Utah: In, Vertebrate paleontology in Utah, Gillette, David D., ed., Utah Geological Survey, Miscellaneous Publication, vol.99-1, p. 201-217.


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* show accepted USGS usage.
Note that data on this page contains information that has been partly revised from bibliographic resources available via the National Geologic Map Database GEOLEX:
The URL is: https://gotbooks.miracosta.edu/gonp/coloradoplateau/lexicon/cedarmountain.htm
Last modified: 1/7/2011