Usage:
Akmalik Chert of Lisburne Group (AK*)
Geologic age:
Early to Middle Mississippian (late Tournaisian to Visean; middle Osagean to probably late Meramecian)
Type section, locality, area and/or origin of name:
Type locality: canyon of Akmalik Creek about 2 mi (3.2 km) southwest of Kikiktat Mountain, in sec. 30, T. 12 S., R. 10 N., Umiat Prime Meridian, Killik River quadrangle, central Brooks Range, northern AK (Mull and others, 1987).
Reference section: in Kurupa Hills, in sec. 29, T. 12 S., R. 12 W., Umiat Prime Meridian, Killik River quadrangle, central Brooks Range, northern AK (Mull and others, 1987).
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 ([ ]).