Usage:
Sand Bay Volcanics (AK*)
Subunits:
(descending): /Sand Bay Lava Flows, /Sand Bay Agglomerate.
Geologic age:
Tertiary, late*
Type section, locality, area and/or origin of name:
Form most of southern half of Great Sitkin Island in central part of Aleutian Islands. Well exposed in vicinity of Sand Bay. [Type locality not designated. Named from Sand Bay in northeast part of Adak 1:250,000 quadrangle, Aleutian Islands, southwestern AK.]
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 ([ ]).