Usage:
Ashishik Basalt (AK*)
Geologic age:
Tertiary and Quaternary*
Type section, locality, area and/or origin of name:
[Named from Ashishik Point at northernmost part of Umnak Island, Lat. 53 deg. 33 min. 34 sec. N., Long. 168 deg. 04 min. 44 sec. W., east-central part of Umnak 1:250,000 quadrangle, Aleutian Islands, southwestern AK] (Byers and others, 1947; Byers, 1959).
Type locality: in east-facing cliff of prominent ridge west of New Jersey Creek, 2 to 3 mi south of Ashishik Point (Byers, 1959, pl. 41).
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 ([ ]).