Reference Detail of

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

Stratigraphic range: Permian
Kinds of fossils: Brachiopods
Quadrangle or area: Goodnews D-1 quad., Alaska
Shipment No.: A-79-41
Referred by: Hoare, Joseph M.
Report prepared by: Dutro, J. Thomas, Jr.
Date: 11/01/1979

This report covers 2 collections from the Permian sequence near the head of Nuyakuk Lake. These are particularly important collections because they record fusulinids from near the Thamnosia beds and from a part of Alaska where fusulinids are rare.
[Remark by J. M. Hoare - Problem is the age of the volcanic rocks. The limestone and overlying flows are apparently in a narrow fault block. The limestone is apparently juxtaposed with similar basalt flows exposed on the east side of the narrow fault valley. If there is no fault, limestone and volcanic rocks are interbedded. Contact between limestone and volcanic rock is concealed, but observations made elsewhere show that Permian limestone commonly grades upward into mafic volcanics.
Need the megafossils identified. Would also like to know if there are any Fusilinids.]

User Note module to be added
79AHr2 (27509-PC) , Goodnews Bay , West side of steep fault(?) valley, 1 mile north of head of northwest-trending bay. Bay is 1/2 mile east of Portage Arm at head of Nuyakuk Lake. Limestone dips 30 degrees S.W., is at least 150' -250' thick. Limestone becomes increasingly tuffaceous upward. Spec. 3 stratigraphically over spec. 2. Overlain by volcanic breccia and thick (1000'+) section of basalt flows.
echinoderm debris, indet.
stenoporoid bryozoans, indet.
Neochonetes?
Yakovlevia sp.
Waagenoconcha? sp.
Calliprotonia sp.
Thamnosia sp.
Neospirifer? sp. (perhaps Septospirifer)
Cyrtella? sp.
Neophricadothyris sp.
79AHr3 (27510-PC) , Goodnews Bay , Same locality as 27509-PC but a bit higher stratigraphically. [West side of steep fault(?) valley, 1 mile north of head of northwest-trending bay. Bay is 1/2 mile east of Portage Arm at head of Nuyakuk Lake. Limestone dips 30 degrees S.W., is at least 150' -250' thick. Limestone becomes increasingly tuffaceous upward. Spec. 3 stratigraphically over spec. 2. Overlain by volcanic breccia and thick (1000'+) section of basalt flows.]
Schwagerina jenkinsi Thorsteinsson