Report on Referred Fossils |
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| Stratigraphic range: |
Upper Tertiary |
| Kinds of fossils: |
Mollusks, brachiopod |
| Quadrangle or area: |
NE Brooks Range and Cook Inlet areas, Alaska |
| Shipment No.: |
A-70-27M |
| Referred by: |
Detterman, Robert L.
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| Report prepared by: |
Addicott, Warren O.
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| Date: |
12/30/1970 |
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Collections upon which this report is based are from Carter Creek in the northeastern part of Arctic Alaska and from St. Augustine Island near the mouth of Cook Inlet, Alaska.
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***
Brief statement of problem and remarks (from collector):
This is additional material from same locality on Carter Creek that was submitted last year. In addition, collections 70ADt-1560, 1562, unit 2, and 1562, unit 3, are from Augustine Island, Cook Inlet, Alaska. The island is a volcano with a few hundred feet of sediments along the south shore, and I need an age assignment.
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| User Note module to be added |
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70ADt 150
(Cenozoic loc. M4427)
, Mt Michelson
, Bluff along Carter Creek, 2 mi. S. 30 deg. E. of mouth, Mt. Michelson quad. Nuwok Formation - in upper part of section measured by Morris (MacNeil, 1957, USGS PP 294-C), precise stratigraphic position not known. Coll.: R. L. Detterman, 1970. Same as loc. M4147.
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Chlamys cf. C. nuwokensis MacNeil
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Thyasira alaskana Kauffman
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Terebratula aff. T. grandis Davidson
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70ADt 1562, unit 2
(Cenozoic loc. M4438)
, Iliamna
, Augustine Island, Cook Inlet. South shore of Augustine Island, 2.3 mi. N. 85 deg. E. of VABM South Augustine. Dark-gray siltstone containing layers of coquina 75-100 ft above base of exposed section and about 50-75 ft below M4437. Coll.: R. L. Detterman, 1970.
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?Mesodesmatid - a small, undetermined genus similar to Holocene genera from Japan.
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Undetermined internal mold - elongate specimen with concentric folds
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70ADt 1562, unit 3
(Cenozoic loc. M4439)
, Iliamna
, South shore of Augustine Island, same locality [as unit 2], interbedded siltstone, sandstone, and grit conglomerate, about 40 feet stratigraphically above loc. M4438. Coll.: R. L. Detterman, 1970.
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Pectinid - a poorly preserved, moderately large, apparently smooth-shelled taxon
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?Mesodesmatid - same as in M4438
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Thracia cf. T. trapezoides (Conrad)
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Undetermined nacreous-shelled species similar to Nucula
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70ADt 1560
(Cenozoic loc. M4437)
, Iliamna
, South shore of Augustine Island, 1.9 mi. N. 84 deg. E. of VABM South Augustine, poorly consolidated arkosic sandstone about 100 feet thick overlying unit 3 (M4439). Coll.: R. L. Detterman, 1970.
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Pectinid - fragment of a thin-shelled, smooth species with moderately large ears.
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