Usage:
No current usage.
(Rocks of †Barrow Trail Member of Schrader Bluff Formation of †Colville Group (AK*) reallocated to Schrader Bluff Formation. See Schrader Bluff.)
Geologic age:
Late Cretaceous*
Type section, locality, area and/or origin of name:
Type locality: bluffs along north side of Colville River, 3 to 5 mi northeast of Umiat Mountain, northern AK. Named from Barrow Trail, and old tractor trail which, in the area from 13 to 28 mi west of Umiat Mountain, follows cuesta formed by sandstones of this member (Whittington, 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 ([ ]).