Reference Detail of

Report on Referred Fossils
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Stratigraphic range: Early Jurassic
Kinds of fossils: Mollusks
Quadrangle or area: Seldovia B-5
Shipment No.: A-62-20
Referred by: Hopkins, David M.
Report prepared by: Imlay, Ralph W.
Date: 10/18/1962


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Brief statement of problem and remarks (from collector):
Transmitter: D.M. Hopkins
District or County: Kachemak Bay, Cook Inlet
Quadrangle: Seldovia B-5
Collector(s) & year(s): D.M Hopkins, Jack Wolfe, R.A.M Schmidt
Field locality number(s): H256, H257
Field notebook reference: In Hopkins Cook Inlet Basin 1962 notebook.
Brief statement of problem, and remarks: These are a new collection from an old locality for Jurassic fossils from rocks resembling the Talkeetna volcanics exposed along the south coast of Kachemak Bay between Port Graham and Seldovia Bay. Although an age diagnosis will be useful, the collection is submitted principally to call Dr. Imlay's attention to the existence of what seems to be a rather rich locaity in the Jurassic rocks of the Cook Inlet basin.
Specimens were collected in thin-bedded green tuff containing abundant shells and coalified wood exposed in beach cliffs just west (H256) and just east (H257) of an exposed cross-section across a buried valley of Miocene age incised in the Jurassic bedrock.
Sparse clams were also seen, but not collected at H258, at west portals of Seldovia Bay.

Locations: H256 59 deg. 26.3'N., 151 deg. 48.8'W.; H257 59 deg. 26.6'N., 151 deg. 47.1'W.; H258 59 deg. 26.7'N., 151 deg. 45.5'W.

[Transmittal also provides this description for localty H258 (not collected): 59 deg. 26.7N., 151 deg. 45.5'W. Probably the same as locality 908 (2982) of Martin, Johnson, and Grant.]
Sketch map of area also attached to front page, showing the location of all three localities.

User Note module to be added
H256 , Seldovia , South side of Kachemak Bay, Seldovia B-5 quad. Lat. 59 deg. 26.3'N., Long. 151 deg. 48.8 W. Probably same as Mes. loc. 2979. Exposed on cliffs just west of buried valley of Miocene age. (description from Imlay E&R report of 10/18/62; Shipment A-62-20)[Transmittal sheet of Hopkins dated Oct. 1, 1962 states following: "59 deg. 26.3'N., 151 deg. 48.8'W. Probably the same as locality 906 (2979) of Martin, G.L., Johnson, B.L. and Grant, U.S., U.S. Geological Survey Bull. 587, p. 66"]
Eopecten sp.
Arcomya? sp.
H257 , Seldovia , Just east of buried valley mentioned under loc. H256. Lat. 59 deg. 26.6' N., Long. 151 deg. 47.1'W. Probably same as Mes. locs. 2980 and 2981. (description from Imlay E&R report of 10/18/62; Shipment A-62-20)[
Paracoroniceras?
Chlamys sp.
Eopecten sp.
Ctenostreon sp.
Arcomya sp.
Gastropods undetermined
Corals undetermined