Usage:
Chignik Formation (AK*)
Subunits:
Coal Valley Member (AK).
Geologic age:
Late Cretaceous*
Type section, locality, area and/or origin of name:
Type section: in Whalers Creek, 0.5 mi from shore of Chignik Lagoon, central Alaska Peninsula, southwestern AK (Atwood, 1911).
Reference section: on north shore between cove (Boomers Cove), 1.5 km north of airstrip, and sand spit at entrance to Chignik Lagoon, central Alaska Peninsula, southwestern AK (Detterman and others, 1981).
AAPG geologic province:
Alaska Peninsula 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 ([ ]).