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Reference
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| Title: |
Report on Referred Fossils
,
1966
(05/02)
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This report supplements report A-62-12 of Grant (9/30/65) Fifty-six collections from 41 localities were examined; nearly all contained Permian brachiopods. The preservation of fossils is fairly good, although not as good as those in shipment A-62-12. Each collection has been assigned a number from the Permo-Carboniferous file of the Paleontology & Stratigraphy Branch, and will be kept by the Branch for future reference. |
| Report by: |
Richard E. Grant
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| Referred by: |
Earl E. Brabb
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| | Age: | Permian |
| Formation: | Tahkandit Limestone (Takhandit Limestone) |
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| Comment: | The Neospirifer and the Megousia suggest correlation with the middle part of the Permian (Upper Permian by official designation) roughtly equivalent to the Spirifer Limestone of Syalbard or the Permian of Central East Greenland (described by Dunbar, 1955), perhaps the early Guadalupian of the southwestern U.S. The same age designation and correlations apply to other collections of the Tahkandit, and will not be repeated for each in this report. Collections from doubtful or unnamed, non-Tahkandit units will be evaluated below in terms of the Tahkandit. Those that are considered to be faunally equivalent to the Tahkandit are considered to be of the same mid-Permian age and correlation. |
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| Title: |
Stratigraphy and Paleontology of the Revised Type Section for the Takhandit Limestone (Permian) in East-Central Alaska
,
1971
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The type section for the Takhandit Limestone is revised to include a massive cliff-forming limestone that apparently is displaced by a fault from the type specified by Mertie (1930) as being along a slough of the Yukon River. Some of the limestone and sandstone in the slough section, on the other hand, seems to be repeated by faulting and is herein excluded from the type section. Also excluded are rocks that more properly assigned to the underlying Nation River Formation of Late Devonian age. The Takhandit type section is redefined to include a lower sandstone unit about 75 feet thick and an upper limestone unit about 270 feet thick. The combined thickness of about 345 feet is considerably less than the 527 or 2,065 feet reported previously. Abundant brachiopods from known stratigraphic positions within the Takhandit are illustrated and discussed systematically for the first time. The faunas show affinities to Permian faunas in the Canadian Arctic Archipelago and central east Greenland and are probably correlative with the upper Leonard and lower Guadalupe Provincial Series of the Southwestern United States. |
| Report by: |
Earl E. Brabb
,
Richard E. Grant
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| | Age: | Early Permian (Early Permian (early Guadalupian; Word)) |
| Formation: | Tahkandit Limestone (Tahkandit Limestone (Limestone unit)) |
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| Comment: | 250 ft above base of unit according to Table 1 (p. 8) Note: Diffenence noted in lat/long data: E&R report states: 60o 10.5' N., 141o 41.9' W., while Brabb & Grant report 65o 10.7' N., 141o 42' W. |
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