U.S. Geological Survey Home AASG Logo USGS HOME CONTACT USGS SEARCH USGS
National Geologic Map Database

Geologic Unit: Akmalik

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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).