Sugarloaf Tuff (AZ*)
[/?] Sugarloaf Quartz Latite (AZ*)
Late Cretaceous (Campanian)*
Well exposed at Sugarloaf Hill, in sec. 8, T. 20 S., R. 25 E., Cochise Co., AZ (Gilluly, 1956).
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 ([ ]).