Usage:
Naknek Formation (AK*)
Subunits:
(alphabetical) --all in AK*: Chisik Conglomerate Member, Indecision Creek Sandstone Member, Katolinat Conglomerate Member, Northeast Creek Sandstone Member, Pomeroy Arkose Member, Snug Harbor Siltstone Member.
Geologic age:
Jurassic, Late*
Type section, locality, area and/or origin of name:
From mouth of Naknek Lake to head of Savonoski River, Alaska Peninsula, southwestern AK (Spurr, 1900; Martin, 1926).
AAPG geologic province:
Alaska Southern region*
Alaska Southwestern region*
Alaska Peninsula province*
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 ([ ]).