Reference Detail of

Report on Referred Fossils
Edit Reference Add/Edit Sample Sample List Show Map

Stratigraphic range: Eocene to Pliocene
Kinds of fossils: Mollusca, echinoids and crabs
Quadrangle or area: , Alaska Peninsula
Shipment No.: O-61-5M
Referred by: Burk, C. A.
Report prepared by: MacNeil, F. Stearns
Date: 09/13/1961

The following collections were made by C.A. Burk of Princeton University during the course of a mapping project for the Richfield Oil Corporation. They have been deposited permanently with the Geological Survey at Menlo Park.

Summary

These collections contain the first undoubted marine Eocene from the Alaska Peninsula; it is found on the east side of Pavlof Bay and on Korovin Island. These oldest Tertiary rocks are of middle Eocene age. Previously the oldest rocks known (late Eocene or early Oligocene) were in the vicinity of Mud Bay off Port Moller. The supposed Eocene rocks of Palache, Atwood, and Dall are of middle Oligocene age, the olderst possibly early Oligocene.

The Eocene faunas are closely related to those of Washington and Oregon and probably can be considered as part of the same distributional range.

The Oligocene faunas, on the other hand, are dominantly Asiatic, a condition that extends eastward to equivalent parts of the Katalla and Poul Creek formations (I regard the lower part of the Poul Creek as Lincoln). How much admixture of Asiatic and American species there is in the Katalla and Yakataga districts has not been fully checked since this condition was realized, but in the Alaskan Peninsula the few species that range southward on the American side also range to Asia and the remainder of the fauna consists of species described from Honshu, Hokkaido, Sakhalin, Kamchatka, and Koryak.

Whether the Blakely stage (late Oligocene and early Miocene) is represented is uncertain. I have regarded beds near Left Head Bay as Blakely. However, the Coal Bay section of this report appears to be the same zone and according to field evidence it falls below beds I regard as Lincoln equivalent.

The type Unga formation of Dall is represented by the Mytilus middendorffi-bearing rock from Port Moller. This is the oldest Miocene horizon if there is no Blakely present. Both the Unga and beds near Bear Lake (probably Late Miocene) have American affinities, little or no Asiatic influence being noted.

Except where are noted as brackish or freshwater, these faunas are moderately shallow marine. I would like to have a generalized section on which these localities are plotted in their stratigraphic position.

User Note module to be added
134-B3-6 (Cenozoic loc. M1169) , Unknown , Tolstoi
Turritella uvasana Conrad var.?
?Natica sp.
134-B3-7 (Cenozoic loc. M1168) , Unknown , Tolstoi
Turritella uvasana Conrad var.?
Natica sp.
Perse sp.
Cylichna sp.
Glycymeris sagittatus (Gabb)
Plagiocardium (Schedocardia) breweri (Gabb)
Venericardia n. sp.? aff. V. clarki Weaver and Palmer
Costacallista conradiana (Gabb)
134-B3-8 (Cenozoic loc. M1170) , Unknown , Tolstoi
?Streptochetus sp.
Natica sp.
Crassatellites sp. aff. C. mathewsoni (Gabb) .....
..... and nipponensis Yokoyama
Venericardia n. sp.? aff. V. clarki Weaver and Palmer
?Corbicula sp.
?Schedocardia
?Pitar cf. P. avenalensis Vokes
Solena sp.
134-C3-7 (Cenozoic loc. M1189) , Unknown , Cone Peak.
Corbicula sp.
134-B1-B-1 (Cenozoic loc. M1165) , Unknown , Korovin Island.
Crassatellites cf. C. nipponicus Yokoyama ....
...... and C. mathewsoni (Gabb)
134-B1-B-2 (Cenozoic loc. M1166) , Unknown , Korovin Island.
Turritella sp.
134-C1-28 (Cenozoic loc. M1171) , Unknown , Chicagof Bay
?Modiolus harrimani Dall
134-C1-22 (Cenozoic loc. M1179) , Unknown , Chichagof Bay
Cardita (Cyclocardia) cf. C. (C.) subnipponica Nagao
134-C1-15 (Cenozoic loc. M1178) , Unknown , Chichagof Bay
?Natica? sp. ......
... or Margarites sp.
Acila aff. A. shumardi (Dall) .....
.... and Acila praedivaricata Nagao and Huzioka
Yoldia sp.
Chlamys aff. C. ashiyaensis (Nagao)
Ostrea sp.
Thyasira sp.
Spisula sp.?
Spisula cf. S. callistaeformis Dall
?Mya sp.
Dentalium sp.
134-C1-14 (Cenozoic loc. M1182) , Unknown , Chichagof Bay
Epitonium atwoodi Dall
Ostrea sp.
134-C1-11 (Cenozoic loc. M1183) , Unknown , [Comment by R.B. Blodgett: none given in E&R of MacNeil, 9/13/61, other than being listed under Chichagof Bay section]
?Perse sp.
Yoldia cf. Y. palachei Dall
Yoldia cf. Y. breweri Dall
Yoldia cf. Y. emersoni Dall
Chlamys aff. C. ashiyaensis Nagao
Modiolus cf. M. harrimani Dall
?Spisula n. sp.? (?= Mesodesma alaskensis Dall)
134-C1-7 (Cenozoic loc. M1177) , Unknown , [Comment by R.B. Blodgett: none given in E&R of MacNeil, 9/13/61, other than being listed under Chichagof Bay section]
Ostrea sp.
Nemocardium sp.
Corbicula cf. C. muratai (Nagao and Otatume)
Corbicula cf. C. bibaiensis (Nagao and Otatume)
Lucinid
Spisula callistaeformis Dall
Macoma sp.
Mya sp.
134-C1-A-4 (Cenozoic loc. M1184) , Unknown , West Cove
Epitonium atwoodi Dall
?Natica sp.
134-C1-A-7 (Cenozoic loc. M1176) , Unknown , West Cove
Acila aff. A. shumardi (Dall) .....
.... and Acila praedivaricata Nagao and Huzioka
Lucinoid
Macoma sp.
?Tellina sp.
Spisula callistaeformis Dall
Brisaster sp.
134-C1-A-9 (Cenozoic loc. M1185) , Unknown , West Cove
Margarites peninsularis Dall
Epitonium atwoodi Dall
Ostrea cf. O. tigiliana Slodkewitsch
Corbicula aff. C. bibaiensis Nagao and Otatume
?Spisula (?=Mesodesma alaskensis Dall)
Macoma sp.
134-C1-A-18 (Cenozoic loc. M1180) , Unknown , West Cove
Ostrea sp.
135-D3-A-12 (Cenozoic loc. M1194) , Unknown , Fox Bay
Calyptraea sp.
Epitonium cf. E. atwoodi Dall
?Siphonalia sp.
?Natica sp.
Acila aff. A. shumardi (Dall) .....
.... and Acila praedivaricata Nagao and Huzioka
?Corbicula sp.
Pitar aff. P. dalli (Weaver) ....
.... or Saxidomus aff. S. hanzawai (Nagao)
Spisula callistaeformis Dall
?Spisula sp. (? or Mesodesma alaskensis Dall)
Solena sp.
135-D3-A-12 Fox Bay (oysters) (Cenozoic loc. M1194) , Unknown , Fox Bay (oysters)
Ostrea sp. aff. O. lincolnensis Weaver
135-D3-A-19 (Cenozoic loc. M1175) , Stepovak Bay , Fox Bay
Acila,
Ostrea sp.
Thyasira bisecta Conrad
134-B3-X1 (Cenozoic loc. M1188) , Unknown , McGinty Point
Perse ....
.... or Siphonalia sp.
?Macoma sp.
?Spisula sp.
Solena sp.
Dentalium sp.
134-B2-A-12 (Cenozoic loc. M1172) , Unknown , McGinty Point
Acila aff. A. shumardi (Dall) subsp?
Ostrea tigiliana Slodkewitsch
Spisula aff. S. eugenense (Clark)
Dentalium sp.
134-B2-A-15 (Cenozoic loc. M1173) , Unknown , McGinty Point
?Homalopoma sp.
Epitonium atwoodi Dall
Natica (Cryptonatica) sp.
Acila aff. A. shumardi (Dall) .....
.... and Acila praedivaricata Nagao and Huzioka
Nuculana ....
.... or Yoldia sp.
Ostrea cf. O. tigiliana Slodkewitsch
Nemocardium aff. N. lorenzanum (Arnold)
Periploma sp.
Spisula sp.
Macoma sp.
Solena sp.
134-B2-A-17 (Cenozoic loc. M1163) , Unknown , McGinty Point
Siphonalia n. sp.? aff. S. sakakurai Mizuno
?Exilia sp.
Natica sp.
Yoldia sp.
Ostrea cf. O. tigiliana Slodkewitsch
Periploma ....
.... or Cochlodesma
Nemocardium sp.
Macoma sp.
135-D5-X1 (Cenozoic loc. M1193) , Unknown , Humpback Bay
Freshwater gastropods, probably Viviparidae
135-C6-X1 (Cenozoic loc. M1187) , Unknown , East side Boulder Bay
Acila sp. aff. A. brevis Nagao and Huzioka, ....
.... and Acila elongata Nagao and Huzioka