Usage:
Toltec Andesite Member of Treasure Mountain Rhyolite (NM)
Geologic age:
early Tertiary (early Oligocene; Rupelian)
Type section, locality, area and/or origin of name:
Type locality not stated. Present in northeastern part of Brazos Peak quadrangle, northwestern NM (Muehlberger and others, 1960; name credited to E.L. Trice, unpub. thesis).
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 ([ ]).