Usage:
Pedernal Member of Abiquiu Formation (NM)
Pedernal Chert Member of Abiquiu Formation (NM)
Geologic age:
Tertiary (Oligocene to Miocene)
Type section, locality, area and/or origin of name:
Named from Cerro Pedernal, a mountain whose Spanish name means "flint," [in T. 22 N., R. 4 E., Sandoval Co.], north-central NM. Exposures mapped on San Pedro Mountain, [in T. 21 and 22 N., R. 1 E., Sandoval Co.], and its horizon followed eastward into the high mesas of northern part of Jemez Mountains (Church and Hack, 1939).
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 ([ ]).