Usage:
Angelica Arkose (AZ*)
Geologic age:
Early Cretaceous*
Type section, locality, area and/or origin of name:
Type locality (composite): along Angelica Wash, in secs. 10 and 11, T. 17 S., R. 12 E.; basal part is 4.5 mi (7.2 km) east of Helmet Peak, in sec. 10, T. 17 S., R. 13 E.; upper part is west of Angelica Wash in S/2 secs. 10 and 11, and SW/4 sec. 12, T. 17 S., R. 12 E., Twin Buttes quadrangle, Pima Co., AZ (Cooper, 1971).
AAPG geologic province:
Basin-and-Range province*
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 ([ ]).