Usage:
No current usage.
(†Kugruk Volcanics (AK) is synonym of Imuruk Volcanics. See Imuruk.)
Geologic age:
Tertiary, late
Quaternary
Pleistocene, early
Type section, locality, area and/or origin of name:
Cliffed east wall of canyon of Kugruk River, 3 mi below Imruk Lake, north-central Seward Peninsula, west-central AK (Hopkins, 1963).
AAPG geologic province:
Seward Peninsula province
Alaska West-Central 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 ([ ]).