No current usage.
(†Tuktu Formation of Nanushuk Group (AK*) abandoned. Rocks reallocated to lower (marine) Nanushuk Formation. See Nanushuk.)
Early Cretaceous*
Type section: Tuktu Bluff, on north side of Chandler River where river cuts through bluff, Lat. 68 deg. 44 min. N., Long. 152 deg. 18 min. W., northern AK (Detterman, 1956).
Reference sections: (1) along Arctic Creek, from Lat. 69 deg. 27 min. 30 sec. N. to 69 deg. 30 min. N., Long. 144 deg. 30 min. W. to 144 deg. 34 min. W.; (2) along Sabbath Creek (Detterman and others, 1975).
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 ([ ]).