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National Geologic Map Database

Geologic Unit: Luman

Usage:

Luman Tongue of Green River Formation (CO*,WY*)
Luman Member of Green River Formation (WY)


Geologic age:

Tertiary*
Eocene, early*


Type section, locality, area and/or origin of name:

Named from exposures on south slope of Luman Butte, in sec. 34, T. 24 N., R. 97 W., Sweetwater Co., southwestern WY (Pipiringos, 1955).


AAPG geologic province:

Green River basin*


For more information, please contact Nancy Stamm, Geologic Names Committee Secretary.

Asterisk (*) indicates published by U.S. Geological Survey authors.

"No current usage" (†) implies that a name has been abandoned or has fallen into disuse. Former usage and, if known, replacement name given in parentheses ( ).

Slash (/) indicates name conflicts with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005, 2021). May be explained within brackets ([ ]).