Usage:
Alcyone Formation (AZ*)
Alcyone Trachyte (AZ)
Geologic age:
Tertiary*
Miocene*
Type section, locality, area and/or origin of name:
Named from Alcyone Mine, in sec. 33, T. 18 N., R. 20 W., Oatman district, Mohave Co., northwestern AZ (Ransome, 1923).
AAPG geologic province:
Plateau sedimentary 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 ([ ]).