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National Geologic Map Database

Geologic Unit: Parting

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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).