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National Geologic Map Database

Geologic Unit: Holder

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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).