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National Geologic Map Database

Geologic Unit: Skull Ridge

Usage:

Skull Ridge Member of Tesuque Formation of Santa Fe Group (NM)


Geologic age:

late Tertiary (Miocene)


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

Type section (composite): (1) lower part on a fault block south of Arroyo Seco, in N/2 sec. 21, T. 20 N., R. 9 E., Santa Fe Co., NM; (2) upper part between Arroyo Seco and White Operation Wash, paralleling boundary between secs. 8 and 17, T. 20 N., R. 9 E., Santa Fe Co., NM (Galusha and Blick, 1971).


AAPG geologic province:

Estancia basin
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 ([ ]).