Usage:
La Jara Canyon Tuff of Treasure Mountain Group (CO*)
Geologic age:
early Tertiary (early Oligocene; Rupelian)*
Type section, locality, area and/or origin of name:
Type locality: in La Jara Canyon, about 27 km southeast of Platoro, Lat. 37 deg. 10 min. N., Long. 106 deg. 20 min. W., Conejos Co., southern CO. Named from La Jara Canyon (Lipman and Steven, 1970).
AAPG geologic province:
San Juan basin*
San Juan Mountains province*
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 ([ ]).