Usage:
Eagle Valley Evaporite (CO*)
Eagle Valley Formation (CO*)
Subunits:
(alphabetical): Jacque Mountain Limestone Member (CO*), Robinson Limestone Member (CO*).
Geologic age:
Middle to Late Pennsylvanian (Desmoinesian to Virgilian)*
Type section, locality, area and/or origin of name:
Type section: on interfluve west of Nottingham Creek, north side of Eagle River, in secs. 6 and 7, T. 5 S., R. 81 W., Eagle Co., CO. Named from exposures in Eagle Valley of Eagle River, near Avon, west-central CO (Lovering and Mallory, 1962).
AAPG geologic province:
Eagle 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 ([ ]).