Usage:
Parting Formation of Chaffee Group (CO*)
Parting Sandstone of Chaffee Group (CO*)
Parting Member of Chaffee Formation (CO*)
Geologic age:
Late Devonian*
Type section, locality, area and/or origin of name:
Named from exposures on Parting Spur, the spur that extends from Dyer Mountains toward West Dyer Mountain, east of Leadville in the Leadville district, Lake Co., central CO (Kirk, 1931).
AAPG geologic province:
Eagle basin*
Green River basin
Piceance 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 ([ ]).