Blair Formation
Usage of Geologic Unit Name:
Blair Formation* of Mesaverde Group
Age:
Cretaceous, Late*
Campanian, early*
Geologic Province:
Green River basin*
Areal Extent:
WY(sc)*
Type Locality:
Not designated. Named for Blair ranch, T17N, R103W, Sweetwater Co, WY (Schultz, 1920).
Unit Name History:
Named as a formation of the Montana Group (Schultz, 1920). Reassigned as basal formation of Mesaverde Group (Sears, 1926). Overview (Hale, 1950; Gill and others, 1970). Revised (Hale, 1950, 1955).
References

Schultz, A.R., 1920, Oil possibilities in and around Baxter basin, in the Rock Springs uplift, Sweetwater County, Wyoming: U.S. Geological Survey Bulletin, 702, 107 p.

Sears, J.D., 1926, Geology of the Baxter basin gas field, Sweetwater County, Wyoming, IN Contributions to economic geology (short papers and preliminary reports), 1925; Part 2, Mineral fuels: U.S. Geological Survey Bulletin, 781-B, p. B13-B27.

Hale, L.A., 1950, Stratigraphy of the Upper Cretaceous Montana Group in the Rock Springs uplift, Sweetwater County, Wyoming: Wyoming Geological Association Field Conference Guidebook, no. 5, p. 49-58.

Hale, L.A., 1955, Stratigraphy and facies relationship of the Montanan Group in south-central Wyoming, northeastern Utah, and northwestern Colorado, IN Camp, R.J., chairman, Green River basin: Wyoming Geological Association Field Conference Guidebook, no. 10, p. 89-94.

Gill, J.R., Merewether, E.A. and Cobban, W.A., 1970, Stratigraphy and nomenclature of some Upper Cretaceous and lower Tertiary rocks in south-central Wyoming: U.S. Geological Survey Professional Paper, 667, 53 p.
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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:
http://ngmdb.usgs.gov/Geolex/geolex_qs.html.
The URL is: https://gotbooks.miracosta.edu/gonp/coloradoplateau/lexicon/mesaverde_blair.htm
Last modified: 1/7/2011