Usage:
Holder Formation (NM)
Geologic age:
Late Pennsylvanian (Virgilian)
Type section, locality, area and/or origin of name:
Type section: in NW/4 NW/4 sec. 14 and NE/4 NW/4 and NW/4 NE/4 sec. 15, T. 17 S., R. 10 E., Otero Co., NM (Pray. 1961).
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 ([ ]).