No current usage.
(†Eagle Evaporite Member of Minturn Formation (CO) replaced with Eagle Valley Evaporite. See Eagle Valley.)
Middle Pennsylvanian (Desmoinesian)
Named from exposures near town of Eagle, Eagle Co., CO (Murray, 1950, unpub. thesis, Univ. of Colorado)
Eagle basin
Piceance basin
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 ([ ]).