GEOLEX

Summary of Citation: Kenai

Publication:
Dall, W.H. and Harris, G.D., 1892, Correlation papers; Neocene:
   U.S. Geological Survey Bulletin, 84, 349 p.

Usage in Publication:
Kenai group*

Modifications:	Geologic Province:	Dominant Lithology:
Named Biostratigraphic dating	Alaska Southern region	Conglomerate Coal

Summary:
Name applied to coal-bearing Miocene beds best exhibited on shores of Kachemak Bay, Kenai Peninsula, Cook Inlet, southern AK. [Also called Kenai series]. Widely spread in British Columbia and over coast of Alaska and its adjacent islands. Shown on sketch map of Neocene formations in AK. [later restricted to coal-bearing rocks of Kenai Peninsula]. Consists of (1) Unga conglomerate, resting conformably on (2) coal-bearing beds. Capped by Miocene Astoria group [later abandoned in AK]. Age is Miocene based on fossil plants.

Summary of Citation: Kenai

Publication:
Eldridge, G.H., 1900, A reconnaissance in the Sushitna basin
   and adjacent territory, Alaska, in 1898: U.S. Geological
   Survey Annual Report, 20, pt. 7, p. 1-29

Usage in Publication:
Kenai formation*

Modifications:	Geologic Province:	Dominant Lithology:
Revised Biostratigraphic dating	Alaska Southern region

Summary:
Kenai series revised [reduced in rank] as Kenai formation. Described as succession of soft, light-gray sandstones, and mud shales with interspersed coal seams. Age has been determined from plants and mollusks to be late Eocene to Oligocene.

Summary of Citation: Kenai

Publication:
Moffit, F.H., 1954, Geology of the eastern part of the Alaska
   Range and adjacent areas, IN Mineral resources of Alaska,
   1951-53: U.S. Geological Survey Bulletin, 989-D, p. D65-D218,
   (incl. geologic maps, scale 1:250,000)

Usage in Publication:
Kenai formation*

Modifications:	Geologic Province:	Dominant Lithology:
Areal limits	Alaska Southern region

Summary:
Tertiary coal-bearing beds in area of report (Alaska Range) are mapped as informal units. Name Kenai formation has been restricted to rocks of the type locality on Kenai Peninsula.

Summary of Citation: Kenai

Publication:
Barnes, F.F. and Cobb, E.H., 1959, Geology and coal resources
   of the Homer district, Kenai coal field, Alaska, IN Mineral
   resources of Alaska, 1956: U.S. Geological Survey Bulletin,
   1058-F, p. F217-F260, (incl. geologic maps, scale 1:63,360)

Usage in Publication:
Kenai formation*

Modifications:	Geologic Province:	Dominant Lithology:
Overview	Alaska Southern region

Summary:
Type locality designated as Homer district, Kenai Peninsula, southern AK. Overview paper includes detailed lithology, distribution, stratigraphic sections, maps, structure, analyses of coal.

Summary of Citation: Kenai

Publication:
Calderwood, K.W. and Fackler, W.C., 1972, Proposed stratigraphic
   nomenclature for Kenai Group: American Association of Petroleum
   Geologists Bulletin, v. 56, no. 4, p. 739-754

Usage in Publication:
Kenai Group

Modifications:	Geologic Province:	Dominant Lithology:
Revised	Alaska Southern region

Summary:
Kenai Formation is raised in rank to Kenai Group and subdivided into (ascending): West Foreland Formation (new), Hemlock Conglomerate (new), Tyonek Formation (redefined), Beluga Formation (new), and Sterling Formation (new). Subsurface data shows group is at least 26,000 ft thick. Unconformably overlies Jurassic, Cretaceous, and older Tertiary rocks. Unconformably underlies Quaternary alluvium and glacial deposits. Age given as Tertiary.

Summary of Citation: Kenai

Publication:
Magoon, L.B., Adkison, W.L. and Egbert, R.M., 1976, Map showing
   geology, wildcat wells, Tertiary plant fossil localities,
   K/Ar age dates, and petroleum operations, Cook Inlet area,
   Alaska: U.S. Geological Survey Miscellaneous Investigations
   Series Map, I-1019, 1 sheet, scale 1:250,000

Usage in Publication:
Kenai Group*

Modifications:	Geologic Province:	Dominant Lithology:
Revised	Alaska Southern region

Summary:
Kenai Formation is revised to Kenai Group. May legend shows group includes (ascending); Hemlock Conglomerate, Tyonek Formation, Beluga Formation, and Sterling Formation. [Note that West Foreland Formation of Paleocene and Eocene age is not adopted as part of Kenai Group]. Age of group is Oligocene, Miocene, and Pliocene based on plant fossils and isotopic dating.

Summary of Citation: Kenai

Publication:
Wolfe, J.A. and Tania, T., 1980, The Miocene Seldovia Point
   flora from the Kenai Group, Alaska: U.S. Geological Survey
   Professional Paper, 1105, 52 p.

Usage in Publication:
Kenai Group*

Modifications:	Geologic Province:	Dominant Lithology:
Age modified Biostratigraphic dating	Alaska Southern region

Summary:
Age of Kenai Group ranges from early Oligocene to Pliocene based on reevaluation of floral stages (Angoonian, Seldovian, Homerian and Clamgulchian).