Usage:
Dutch Harbor Member of Unalaska Formation (AK*)
Geologic age:
Tertiary
Miocene, early(?)*
Type section, locality, area and/or origin of name:
Type section: measured about 3 km east of village of Unalaska, Unalaska Island, Aleutian Islands, AK (Lankford and Hill, 1979).
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 ([ ]).