Usage:
Stepovak Formation (AK*)
Stepovak Formation of Beaver Bay Group (AK)
Geologic age:
Tertiary
Eocene, late*
Oligocene, early*
Type section, locality, area and/or origin of name:
Reference section: exposures in sec. 12, 13, and 24, T. 52 S., R. 71 W., Port Moller C-1 quadrangle (scale 1:63,360), Alaska Peninsula, southwestern AK (Detterman and others, 1996).
AAPG geologic province:
Alaska Peninsula province*
Alaska Southwestern 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 ([ ]).