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National Geologic Map Database

Geologic Unit: Bernal

Usage:

No current usage.
(†Bernal Formation (NM*) replaced with Artesia Formation. See Artesia.)


Geologic age:

Middle Permian (Guadalupian)*


Type section, locality, area and/or origin of name:

Type sequence: near villages of Bernal and Chapelle, San Miguel Co., central northern NM (Bachman, 1953).
Type section: in SE/4 NW/4 SE/4 sec. 36, T. 14 N., R. 15 E., San Miguel Co., NM (Lucas and Hayden, 1991).


AAPG geologic province:

Estancia basin*
Las Vegas-Raton basin*
Orogrande basin*
Palo Duro 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 ([ ]).