| Sample: |
Sample No. 69ACn241 -- USGS No. 10218-SD
|
| Locality: |
Field No. 69ACn241
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| Description: |
St. John Hill, 2 to 3 miles south of Farewell; from unnamed limestone. (See back of field book, p. 23, for locality details). Collector: M. Churkin, Jr., 1969. [The transmittal sheet attached to the Berdan's report 12/31/70 states the locality coordinates as: long. 153o 53' and lat. 62o 28'. - noted by Ning Zhang] |
| Location: |
Alaska Quadrangle: Mc Grath B-2
Lat.: 62o28.8 ' Long.: 152o52.8 ' |
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Reference
|
| Title: |
Report on Referred Fossils
,
1980
(08/01)
|
|
This report covers a single collection (69ACn241) from St. John Hill, near Farewell, Alaska. The other two collections in this shipment contain corals and will be reported on later. |
| Report by: |
Jean M. Berdan
,
J. Thomas Dutro
, Jr.
|
| Referred by: |
Michael Churkin
, Jr.
|
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|
| | Age: | Frasnian |
| Formation: | Unnamed (Unnamed limestone) |
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| Comment: | This collection, from a brownish gray bioclastic limestone, consists of ostracodes, brachiopods and indeterminate echinoderm debris. The brachiopods include Cyrtospirifer sp. and indeterminate fragments. The ostracodes include several unnamed species reported by Braun from the Frasnian Hay River Formation of northern Alberta and the Great Slave Lake area (Braun, 1967).
The Cyrtospirifer by itself indicates a Late Devonian age, but the ostracodes improve the correlation, probably with Braun's zone DFR 4 in the upper Hay River.
Reference: Braun, W.K., 1967, Upper Devonian ostracod faunas of Great Slave Lake and northeastern Alberta, IN Oswald, D.H., ed., International Symposium on the Devonian System, Calgary, 1967: Calgary, Alberta Soc. Petrol. Geol., v. 2, p. 617-652 [1968]. |
|
|
| Title: |
Report on Referred Fossils
,
1970
(12/31)
|
|
This report concerns a small collection from long. 153 deg. 53' and lat. 62 deg. 28'. Field locality no. 69ACn 241. |
| Report by: |
Jean M. Berdan
|
| Referred by: |
Michael Churkin
, Jr.
|
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|
| | Age: | Late Devonian |
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| Comment: | This collection contains Knoxites? sp., a geisinid, and a fairly large, smooth unisulcate form. The genus Knoxites was described from the Frasnian beds of the Russian platform, and although the specimens listed above as Knoxites? differ in the amount of overlap from the type of the genus, this character may not be diagnostic. The other ostracodes mentioned above also look similar to forms illustrated from the Upper Devonian of Russia, although they cannot be definitely identified with any of them. Consequently, it seems probable that the collection is from rocks of Late Devonian age, although as similar ostracodes occur in the Carboniferous, a younger age is possible. |
| Occurrence(s) |
| No. |
Group |
|
Name |
Qty |
Notes |
| 1 |
Ostracodes |
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Knoxites? sp. |
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| 2 |
Ostracodes |
|
geisinid |
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| 3 |
Ostracodes |
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a fairly large, smooth unisulcate form |
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