Usage:
Junction Creek Sandstone (CO*)
Junction Creek Sandstone Member of Wanakah Formation of San Rafael Group (CO*)
Geologic age:
Late Jurassic*
Type section, locality, area and/or origin of name:
Not designated. Named from exposures opposite Animas City Mountain [part of Durango], between Junction Creek and Animas River, La Plata Co., CO (Goldman and Spencer, 1941).
AAPG geologic province:
Paradox basin*
Piceance basin*
San Juan basin*
San Luis 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 ([ ]).