Usage:
Dorado Basalt Member of Hinsdale Formation (NM)
Geologic age:
late Tertiary (Pliocene)
Type section, locality, area and/or origin of name:
Name applied to basalt that caps Petaca Mesa, northeast of Petaca, [in sec. 5, T. 26 N., R. 9 E., on eastern edge of Las Tablas 7.5-min quadrangle, Rio Arriba Co., central northern NM]. Particularly well exposed to north in Dorado Canyon, [Carson National Forest area, in secs. 29, 32, T. 27 N., R. 9 E.], Las Tablas 7.5-min quadrangle, Rio Arriba Co., central northern NM (Barker, 1958).
AAPG geologic province:
San Juan 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 ([ ]).