Sample Detail of
Sample: Sample No. 72JP-Wiley Creek float -- USGS No. 23554-PC
Locality: Field No. 72JP-Wiley Creek float
Description: McCarthy C-2 quad., C NW 1/4 sec. 26, T. 2 S., R. 20 E., elev. approx. 4500 ft. Collector: D. Jones, 1972.
Location: Alaska Quadrangle: Mc Carthy C-2
Township&Range: T2 S. R20 E. Section: C NW 1/4 sec. 26
Reference
Title: Report on Referred Fossils ,  1973 (08/29)
[Note by Blodgett: This report by C.L. Rowett (prepared by J.T. Dutro, Jr.)

This report covers the 8 collections that contain corals from these three shipments. The Early Permian age assignment given by fusulinids and brachiopods, is substantiated. Rowett suggests that the collections with Sinopora and Tachylasma (USGS 23557-PC and 23564-PC) may be early Leonard.

The float specimen from Wiley Creek (USGS 23554-PC) is a Lithostrotion (Siphonodendron which, according to Rowett, is confined to the Carboniferous. It will be sent to A.K. Armstrong for examination.

The collections are being retained.
Report by: Charles L. Rowett
Referred by: E. M. MacKevett , Jr.
Age: Carboniferous
Comment:The float specimen from Wiley Creek (USGS 23554-PC) is a Lithostrotion (Siphonodendron) which, according to Rowett, is confined to the Carboniferous. It will be sent to A.K. Armstrong for examination.
Occurrence(s)
No. Group Name Qty Notes
1 Rugose Corals Lithostrotion (Siphonodendron) sp.

Title: Report on Referred Fossils ,  1973 (02/02)
This report covers 13 collections, from the McCarthy C-1, C-2, and C-3 quadrangles, made by D.L. Jones in 1972. Fusulinids were found in 8 collections and will be reported separately by Ray Douglass. Corals from 5 collections are being studied by C.L. Rowett. All evidence points to an Early Permian (Wolfcamp) age. Brachiopods are listed and discussed below.

The brachiopods are like forms reported by Waterhouse and from early Permian assemblages in the Yukon Territory. They correlate to some part of his Zone E, perhaps Zone Ey.

Reference: Bamber, E.W., and Waterhouse, J.B., 1971, Carboniferous and Permian stratigraphy and paleontology, northern Yukon Territory, Canada: Bull. Canadian Petrol. Geol., v. 19, no. 1, p. 29-250.

The material is being retained.
Report by: J. Thomas Dutro , Jr.
Referred by: E. M. MacKevett , Jr. , David L. Jones
Age: Early Permian (Early Permian (Wolfcamp))
Comment:

The brachiopods are like forms reported by Waterhouse and from early Permian assemblages in the Yukon Territory. They correlate to some part of his Zone E, perhaps Zone Ey.

Reference: Bamber, E.W., and Waterhouse, J.B., 1971, Carboniferous and Permian stratigraphy and paleontology, northern Yukon Territory, Canada: Bull. Canadian Petrol. Geol., v. 19, no. 1, p. 29-250.
Occurrence(s)
No. Group Name Qty Notes
1 Rugose Corals phaceloid coral (to Rowett)
2 Brachiopods Linoproductus aff. L. cora (d Orbigny)

Title: Report on Referred Fossils ,  1973 (09/25)
Report by: Augustus K. Armstrong , J. Thomas Dutro , Jr.
Referred by: E. M. MacKevett , Jr.
Age: Permian
Comment:This specimen of phaceloid colonial coral is of special interest in that C.L. Rowett suggested that it might be Lithostrotion (Siphonodendron), a genus confined to the Carboniferous (see report dated 8/29/73). All the other fossils from this shipment, coralline or otherwise, are Permian.

The specimen was studied by A.K. Armstrong who, while verifying its resemblance to Siphonodendron found morphologic differences that question such an identification. In addition, Permian microfossils were identified by Armstrong in the matrix. Armstrong has the following to say about the specimen:

(Carefull examination of this specimen and five thin sections reveals the matrix between the corallites contains small .35 to .40 mm Nodosariidae and what might be a crushed Globivalvulina sp.

The coral is fasciculate, corallites 5 to 7 mm in diameter, well developed columella connected to the counter septum, and faint development towards clisiophylloid structure. The major and minor septa may be discontinuous in the dissepimentarium. The dissepiments show strong secondary deposits.

The foraminifera indicate a Permian age and the structure of the corallites suggest this is a late Paleozoic pseudomorph of Siphonodendron.)

Thus, the coral clearly seems to be Permian and the age anomaly is cleared up.

Occurrence(s)
No. Group Name Qty Notes
1 Rugose Corals late Paleozoic pseudomorph of Siphonodendrum
2 Forams Nodosariidae .35 to .40 mm
3 Forams what might be a crushed Globivalvulina sp.