Usage:
No current usage.
(†Corwin Formation of Nanushuk Group (AK*) abandoned. Rocks reallocated to upper (nonmarine) Nanushuk Formation. See Nanushuk.)
Geologic age:
Cretaceous*
Type section, locality, area and/or origin of name:
Named from Corwin Bluff, about 30 mi east of Cape Lisburne (Schrader, 1902).
Type section: along coast of Chukchi Sea at Corwin Bluff, from 0.6 mi west of Thetis Creek to Risky Creek and 0.3 mi upstream along Risky Creek, Lat. 68 deg. 45 min. N., Long. 165 deg 10 min. to 165 deg. 35 min. W., northwestern AK (Chapman and Sable, 1960).
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 ([ ]).