Usage:
Cowles Member of Tererro Formation of Arroyo Penasco Group (NM*)
Geologic age:
Late Mississippian (Chesterian)*
Type section, locality, area and/or origin of name:
Type section: in and above abandoned quarry on road to Winsor Ranch, 0.2 mi south of Cowles, east side of Pecos River Canyon, San Miguel Co., NM. Origin of name not stated by authors, but probably named from Cowles (Baltz and Read, 1960).
AAPG geologic province:
Las Vegas-Raton basin*
San Luis basin*
Estancia 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 ([ ]).