Emery Sandstone Member of Mancos Shale

Usage of Geologic Unit Name:
Emery Sandstone Member of Mancos Shale (UT*)
Cretaceous, Late*
Geologic Province:
Paradox basin*
Uinta basin*
Areal Extent:
Type Locality:
Not designated. Named from town of Emery, Emery Co., UT (Spieker and Reeside, 1925).

Unit history:
Name proposed for member of Mancos Shale (Spieker and Reeside, 1925).
Areal limits (Sargent and Hansen, 1982).
Overview; Revised, Garley Canyon Beds assigned (Fouch and others, 1983).

The Emery Sandstone is one of five members of Upper Cretaceous Mancos Shale mapped only in northeast part of quad, in the Henry basin, east of Waterpocket fold, Garfield Co, UT in the Paradox basin. Mapped limit represents the southwest limit for the member. Is 120 to 300 ft thick. Overlies Blue Gate Member; underlies Masuk Member (term "Shale" removed from both member names) of Mancos. Is equivalent to upper part of Straight Cliffs Formation of Kaiparowits Plateau to south in quad.


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., editors, Mesozoic paleogeography of the west-central United States: Society of Economic Paleontologists and Mineralogists, Rocky Mountain Section, Rocky Mountain Paleogeography Symposium, v. 2, p. 305-336.

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.

Sargent, K.A., and Hansen, D.E., 1982, Bedrock geologic map of the Kaiparowits coal-basin area, Utah: U.S. Geological Survey Miscellaneous Investigations Series Map, I-1033-I, 1 sheet, scale 1:125,000.

Smith, Curtis, 1983, Geology, depositional environments, and coal resources of the Mt. Pennell 2 NW quadrangle, Garfield County, Utah: Brigham Young University Geology Studies, v. 30, pt. 1, p. 145-169.

Spieker, E.M., and Reeside, J.B., Jr., 1925, Cretaceous and Tertiary formations of the Wasatch Plateau, Utah: Geological Society of America Bulletin, v. 36, no. 3, p. 435-454.

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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/mancos_emery.htm
Last modified: 1/7/2011