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National Geologic Map Database

Geologic Unit: Kamishak

Usage:

Kamishak Formation (AK*)


Subunits:

(alphabetical) --all in AK*: Bruin Limestone Member, Ursus Member.


Geologic age:

Triassic, Late*


Type section, locality, area and/or origin of name:

Typically exposed on west shore of Kamishak Bay, especially in vicinity of Bruin Bay, Iliamna region, lower Cook Inlet, southwestern AK (Martin and Katz, 1912).
Reference section: starting at Cape Kekurnoi, Karluk C-4 and C-5 quadrangles (scale 1:63,360) and continuing southwest along the shore for 4.8 km to entrance of Puale Bay, then northwest along shore of Puale Bay, 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 does not conform with nomenclatural guidelines (CSN, 1933; ACSN, 1961, 1970; NACSN, 1983, 2005). This may be explained within brackets ([ ]).