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National Geologic Map Database

Geologic Unit: Log Springs

Usage:

Log Springs Formation (NM*)


Geologic age:

Late Mississippian (Chesterian)*


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

Type section: in Penasco Canyon, Nacimiento Mountains, in NW/4 SE/4 sec. 5, T. 16 N., R. 1 E., Sandoval Co., NM. Named from Log Springs in Penasco Canyon (Armstrong, 1955).


AAPG geologic province:

San Juan basin*
Estancia 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 ([ ]).