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National Geologic Map Database

Geologic Unit: Tuktu

Usage:

No current usage.
(†Tuktu Formation of Nanushuk Group (AK*) abandoned. Rocks reallocated to lower (marine) Nanushuk Formation. See Nanushuk.)


Geologic age:

Early Cretaceous*


Type section, locality, area and/or origin of name:

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).


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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).