Usage:
Luis Lopez Formation (NM)
Subunits:
(informal): rhyolites of Bianchi Ranch and Hardy Ridge.
Geologic age:
Tertiary
Oligocene
Type section, locality, area and/or origin of name:
Type area: south end of Luis Lopez manganese district, along east side of Chupadera Mountains from 2.5 mi north of to 3.3 mi south of Nogal Canyon, 11 mi southwest of Socorro, 7 mi southwest of village of Luis Lopez, in secs. 20, 29, 31, and 32, T. 4 S., R. 1 W., and in secs. 4, 5, 6, 8, and 9, T. 5 S., R. 1 W., Luis Lopez 7.5-min quadrangle, Socorro Co., central NM (Osburn and Chapin, 1983).
AAPG geologic province:
Orogrande 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 ([ ]).