Usage:
No current usage.
(Rocks of †Green Canyon Group (NM-notably in Derry area) reallocated to Red House Formation. See Red House.)
Geologic age:
Middle Pennsylvanian (Atokan)
Type section, locality, area and/or origin of name:
Type section: measured on west-facing slope of hill about 0.75 mi east of village of Derry, in sec. 32, T. 17 S., R. 4 W., [Garfield 7.5-min quadrangle], Sierra Co., southwestern NM. Named from Green Canyon, [about 1 mi] north of Derry (Thompson, 1942).
AAPG geologic province:
Orogrande 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 ([ ]).