Usage:
Great Sitkin Volcanics (AK*)
Geologic age:
Tertiary, late*
Quaternary*
Type section, locality, area and/or origin of name:
Not designated. [Named from Great Sitkin Volcano which forms northern half of Great Sitkin Island, central part of Aleutian Islands, northeast part of Adak 1:250,000 quadrangle, AK (Simons and Mathewson, 1947).
AAPG geologic province:
Aleutian Islands province*
Alaska Southwestern region*
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 ([ ]).