Usage:
Tocito Sandstone Lentil of Mancos Shale (CO,NM*)
Tocito Member of Gallup Sandstone (NM)
Geologic age:
Late Cretaceous*
Type section, locality, area and/or origin of name:
Named from outcrops of the sandstone near Tocito Trading Post, San Juan Co., northwestern NM (San Juan basin). Also outcrops near Beautiful Mountain, about 25 mi southwest of type locality (Reeside, 1924).
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 ([ ]).