Usage:
No current usage.
(†Topagoruk Formation (AK) abandoned. Considered part of transition zone between Torok Formation and Nanushuk Group. See Torok and Nanushuk.)
Geologic age:
Early Cretaceous
Type section, locality, area and/or origin of name:
Type section (subsurface): depth-interval 1,350 to 3,900 ft, Topagoruk Test Well No.1 [now plugged and abandoned], approx. 72 mi S. 14 deg. E. of Point Barrow, Lat. 70 deg. 37 min. 30 sec. N., Long. 155 deg. 33 min. 36 sec. W., northern AK (Robinson and others, 1956).
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 ([ ]).