Usage:
Otuk Formation of Etivluk Group (AK*)
Otuk Formation (AK*)
Subunits:
Blankenship Member (AK*).
Geologic age:
Triassic, Early*
Triassic, Middle*
Triassic, Late*
Jurassic, Early*
Jurassic, Middle*
Type section, locality, area and/or origin of name:
Type section: bluff on east bank of Otuk Creek, in sec. 31, T. 10 S., R. 16 W., Killik River 1:250,000 quadrangle, northern AK (Mull and others, 1982).
AAPG geologic province:
Alaska Northern 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 ([ ]).