Usage:
Hinsdale Formation (CO*,NM*)
Hinsdale Basalt (NM)
Subunits:
(alphabetical) --all in NM: Cisneros Basalt Member, Dorado Basalt Member, Jarita Member, Servilleta Member.
Geologic age:
Tertiary (Oligocene to Pliocene)*
Type section, locality, area and/or origin of name:
Named from exposures in Hinsdale Co., southwestern CO (Cross, 1911).
AAPG geologic province:
Piceance basin*
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 ([ ]).