Usage:
No current usage.
(†Hondo Slate (NM) replaced with Pilar Phyllite Member of Ortega Formation [now Pilar Formation]. See Pilar.)
Geologic age:
Paleoproterozoic
Type section, locality, area and/or origin of name:
Notable exposures in [Trampas 7.5-min quadrangle, Taos Co.], central northern NM: belt extending from near Dixon northeast to central part of drainage system of Arroyo Hondo, [along Kit Carson Highway (U.S. 64), Canon del Rio Grande; smaller belt between Harding mine and Copper Hill [in secs. 20 and 29, T. 23 N., R. 11 E.]; and along Dixon-Penasco Road [Route 75] a few mi east of Dixon (Just, 1937).
AAPG geologic province:
Southern Rocky Mountain region
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 ([ ]).