Reference Detail of

Report on Referred Fossils
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Stratigraphic range: Devonian
Kinds of fossils: Marine invertebrates
Quadrangle or area: Arctic and Philip Smith quads., Northern Alaska
Shipment No.: A-60-27
Referred by: Brosge, William P.
Report prepared by: Dutro, J. Thomas, Jr.
Date: 12/13/1961

(in consultation with W. A. Oliver, Jr.) This report covers 12 collections, something over 150 specimens, from the Brooks Range. The Famennian age of at least a part of the Kanayut conglomerate is supported. The Frasnian age of the slate-sandstone unit is strengthened, and the collection from the limestone-siltstone does not change the earlier dating as probable Frasnian (see report on A-60-24 of 12/11/61). The suggestion that the Skajit limestone straddles the Middle Devonian-Upper Devonian boundary is again indicated. In this case, collection Be 684 contains a trilobite, Scutellum, like that described from the Tully of New York.

W. A. Oliver, Jr. previously reported on the corals (see report of 2/27/61); his identifications are included here to complete the fossil assemblages.


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Brief statement of problem and remarks (from collector):
Is Be 728 basal Siksikyuk or the base of a thrust plate of Devonian shale resting on Lisburne?
Is RR613 Kayak or Sadlerochet?
Are RR699 & 660 Lisburne or Devonian limestone like 60ABe 555 D and Be 557 of previous shipment?
Is RR613 Kayak or Devonian?
User Note module to be added
60ABe 683 , Philip Smith Mts , Black shaly limestone in dark gray silt shale and shaly sandstone. Upper graywacke, slate quartzite unit of Devonian slate-sandstone. (18.92 x 5.40 P. Smith). [description from transmittal sheet of W.P. Brosge, Oct. 27, 1960]
Pachyphyllum? sp.
Thamnopora sp.
syringoporoid coral, indet.
cchinoderm debris, indet.
Nervostrophia? sp.
Atrypa sp.
Aglaoglypta sp.
60ABe 681 , Philip Smith Mts , E. Shale and quartzite . . . . . . . . 1004 ft.
D. Black shale and thin bedded ...dark gray quartzite . . . 15 ft.
C. Limestone, dark gray, coarse-grained, thin-bedded, ferruginous, contains shale chips. 25 ft.
B.Sandstone, light yellow coarse, gritty, thin-bedded . . . 10 ft.
A. Limestone gray, crystalline, thick-bedded . . 504 ft.
Fossils from unit C. Units B-C probably thin section of Devonian limestone-siltstone unit. (19.08 x 3.68 P. Smith). [description from transmittal sheet of W.P. Brosge, Oct. 27, 1960]
Cladopora sp.
rugose coral, undet.
Schizophoria sp. (large)
productellid, indet.
spiriferoid brachiopod, indet.
Atrypa sp.
gastropod, indet.
60ABe 684 , Philip Smith Mts , Limestone, medium gray, sphanitic, rough weathering. (18.37 x 5.51 P. Smith) [description from transmittal sheet of W.P. Brosge, Oct. 27, 1960]
echinoderm debris, indet.
cyathophylloid coral, indet.
Thamnopora sp.
massive stromatoporoid, undet.
Scutellum? sp.
60ABe 688 , Arctic , Thin red-weathering limestone in conglomerate. Probably not fault slice. Kanayut. (0.68 x 5.76 Arctic). [description from transmittal sheet of W.P. Brosge, Oct. 27, 1960]
Productella? sp.
Cyrtospirifer sp.
spiriferoid brachiopod, indet.
bivalve shell fragments, indet.
plant fragments, indet.
60ABe 734 , Arctic , Ferruginous sandstone in gray-green slate directly beneath conglomerate. Devonian slate-sandstone. (16.49 x 10.59 Arctic). [description from transmittal sheet of W.P. Brosge, Oct. 27, 1960]
Schuchertella? sp.
bivalve shell fragments, indet.
60ABe 745 , Arctic , Calcareous sandstone in graywacke. Paddle Mtn. Upper graywacke, slate quartzite unit of Devonian slate-sandstone. (8.56 x 2.63 Arctic). [description from transmittal sheet of W.P. Brosge, Oct. 27, 1960]
echinoderm debris, indet.
rhynchonelloid brachiopods, indet.
60ABe 741 , Arctic , Silty limestone and calcareous silt in muddy slate and graywacke. Upper graywacke, slate quartzite unit of Devonian slate-sandstone. (13.63 x 7.45 Arctic). [description from transmittal sheet of W.P. Brosge, Oct. 27, 1960]
Hexagonaria? sp.
Cyrtospirifer? sp.
spiriferoid brachiopod, indet.
pelecypod, indet.
60ARr 642 , Arctic , Calcareous sandstone and ferruginous limestone in slate at contact with mafic flow. Upper graywacke, slate quartzite unit of Devonian slate-sandstone. (14.55 x 1.69 Arctic). [description from transmittal sheet of W.P. Brosge, Oct. 27, 1960]
rhynchonelloid brachiopod, indet.
spiriferoid brachiopod, indet.
60ARr 642Z , Arctic , Bouldered. Same calcareous sandstone as RB642 within mafic flow. Upper graywacke, slate quartzite unit of Devonian slate-sandstone. (14.55 x 1.69 Arctic). [description from transmittal sheet of W.P. Brosge, Oct. 27, 1960]
chonetid brachiopod, indet.
rhynchonelloid brachiopod, indet.
Cyrtospirifer? sp.
bivalve fragments, indet.
60ARr 649 , Arctic , Gray-green fine- to medium-grained ferruginous calcareous sandstone like RR642. Upper graywacke, slate quartzite unit of Devonian slate-sandstone. (15.60 x 1.70 Arctic). [description from transmittal sheet of W.P. Brosge, Oct. 27, 1960]
Cyrtospirifer? sp.
Atrypa? sp.
bivalve fragments, indet.
60ARr 719 , Arctic , Silicified limestone at greenstone contact. (5.00 x 0.07 Arctic). [description from transmittal sheet of W.P. Brosge, Oct. 27, 1960]
Favosites sp.
60ABe 769 , Arctic , Limestone, dark- to medium-gray, fine-grained to sublithographic. (8.08 x 1.88 Arctic). [description from transmittal sheet of W.P. Brosge, Oct. 27, 1960]
echinoderm debris, indet.
massive stromatoporoid, undet.
Schizophoria? sp.
Atrypa sp.
gastropods, indet.