Usage:
Maroon Formation (CO*)
Subunits:
(alphabetical) --all in CO: Chubb Member, Fryingpan Member*, Pony Spring Member, Schoolhouse Member*.
Geologic age:
Middle Pennsylvanian (Desmoinesian) to early Permian (Wolfcampian)*
Type section, locality, area and/or origin of name:
Named from typical developments on Maroon Creek, [Aspen quadrangle, Pitkin Co.], western central CO (Eldridge, IN Emmons and others, 1894).
AAPG geologic province:
Eagle basin*
Piceance basin*
San Luis basin*
South Park 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 ([ ]).