Usage:
Bishop Cap Formation (NM)
Bishop Cap Member of Magdalena Formation (NM*,TX*)
Also called Bishops Cap and Bishop's Cap in some reports.
[†Magdalena Formation not used by the NM Geol. Survey.]
Geologic age:
Middle to Late Pennsylvanian (Desmoinesian to Missourian)*
Type section, locality, area and/or origin of name:
[Named from Bishop Cap, a peak in southern Organ Mountains, about 14 mi north of Anthony, in sec. 26, T. 24 S., R. 3 E., Bishop Cap 7.5-min quadrangle, Dona Ana Co., southeastern NM (see Nelson, 1940).]
[Type locality:] in Vinton Canyon, 2 to 3 mi east of Westway on western flank of Franklin Mountains, [approx. Lat. 31 deg. 58 min. 00 sec. N., Long. 106 deg. 31 min. 30 sec. W., Canutillo 7.5-min quadrangle], El Paso Co., western TX (see Nelson, 1940; Harbour, 1972).
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 ([ ]).