Lodore Formation
Usage of Geologic Unit Name:
Lodore Formation (CO*,UT*,WY)
Lodore Shale (CO*.,WY*)
Age:
Cambrian, Late*
Dresbachian

Geologic Province:
Green River basin*
Uinta basin
Uinta uplift
Areal Extent:
CO(nw)*
UT(ne)*
WY
Type Locality:
Not designated. Provisionally named for Lodore Canyon, Moffat Co., CO (Powell, 1876).
Unit Name History:
Provisionally named Lodore Group (Powell, 1876). Redescribed as Lodore Shales (Weeks, 1907). Areal limits (Lochman-Balk, 1955). Isotopic dating; Overview (Herr and others, 1982).
References

Powell, J.W., 1876, Report on the geology of the eastern Uinta Mountains and a region of country adjacent thereto: U.S. Geological and Geographical Survey of the Territories (Powell), v. 7, 218 p.

Weeks, F.B., 1907, Stratigraphy and structure of the Uinta Range: Geological Society of America Bulletin, v. 18, p. 427-448.

Lochman-Balk, Christina, 1955, Cambrian stratigraphy of the south and west margins of Green River basin [Utah-Wyoming], IN Camp, R.J., chairman, Green River basin: Wyoming Geological Association Field Conference Guidebook, no. 10, p. 29-37.

Herr, R.G., Picard, M.D. and Evans, S.H., Jr., 1982, Age and depth of burial, Cambrian Lodore Formation, northeastern Utah and northwestern Colorado: University of Wyoming Contributions to Geology, v. 21, no. 2, p. 115-121.
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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/lodore.htm
Last modified: 1/7/2011