Usage:
Pearce Volcanics (AZ*)
Geologic age:
Tertiary*
Eocene*
Oligocene*
Miocene*
Type section, locality, area and/or origin of name:
Form a group of conspicuous isolated hills rising above alluvium of Sulphur Springs Valley in neighborhood of Pearce, in T. 17 and 18 S., R. 25 and 26 E., central Cochise Co., southeastern AZ. Named from Pearce (Gilluly, 1956).
AAPG geologic province:
Pedregosa 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 ([ ]).