| Sample: |
Sample No. 92ADo83E1 -- USGS No. DR 1464
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| Locality: |
Field No. 92ADo83E1
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| Description: |
Howard Pass B-5. Lat. 68o 22'15" N., Long. 158o 47'24" W. Red chert, about 1,000 ft southwest of 92ADo83B. (description from Dover et al., 2004, p. 60 (Table 2)); [Formation: Pennsylvanian-Triassic chert unit -- in Ipnavik sequence? USGS Howard Pass 1:250,000 B5 quadrangle, T. 12 S., R. 29 W., sec. 30; flat summit area 1 mi east of Primus Creek measured from a point on Primus Creek approx. 2 mi. above its mouth. Same locality as 92ADo83B and 83E2. Lat 68°22'18, 157°47'18". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)] |
| Location: |
Alaska Quadrangle: Howard Pass B-5 Township&Range: 12 S. 29 W. Section: 30
Lat.: 68o22'15 " Long.: 158o47'24 " |
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Reference
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| Title: |
Geologic and fossil locality maps of the west-central part of the Howard Pass Quadangle and part of the adjacent Misheguk Mountains Quadrangle, western Brooks Range, Alaska
,
2004
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| Report by: |
Jim Dover
,
Irv L. Tailleur
,
Julie A. Dumoulin
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| | Age: | Norian (Late Triassic (latest middle to early late Norian)) |
| Formation: | Imnaitchiak Chert |
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| Comment: | Age: Late Triassic (latest middle to early late Norian; Pantanellium silberlingi Subzone of the Betraccium deceweveri Zone of Blome, 1984; also see Blome and others, 1988). The Association of Livarella may extend down into the middle Norian, at least in North American rock sequences. Shown as locality 95 on Sheet 2; map unit: JlPip REFERENCES
Blome, C.D., 1984, Upper Triassic radiolarians and radiolarian zonation for western North America: Bulletins of American Paleontology, v. 85, no. 318, 88 p.
Blome, C.D., Reed, K.M., and Tailleur, I.L., 1988, Radiolarian biostratigraphy of the Otuk Formation in and near the National Petroleum Reserve in Alaska, in Gryc, G., ed., Geology and Exploration of the National Petroleum Reserve in Alaska, 1974-1982: U.S. Geological Survey Professional Paper 1399, p. 725-776. |
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| Title: |
Report on Referred Fossils
,
1993
(06/23)
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| Report by: |
Charles D. Blome
,
Katherine M. Reed
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| Referred by: |
J. H. Dover
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| | Age: | Norian (Late Triassic (latest middle to early late Norian; Pantanellium silberling subzone of the Betraccium deweri Zone) |
| Formation: | Unnamed (Pennsylvanian-Triassic chert unit) |
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| Comment: | Remarks: The association of Livarella sp. with Capnuchosphaera sp. suggests that Livarella may extend down into the middle Norian, at least in North American rock sequences. Age: Late Triassic (latest middle to early late Norian; Pantallium silberlingi subzone of the Betraccium deweveri Zone of Blome, 1984; also see Blome and others, 1988). REFERENCES
Blome, C.D., 1984, Upper Triassic Radiolaria and radiolarian zonation from western North America: Bulletins of American Paleontology, v. 85, no. 318, 88 p.
Blome, C.D., Reed, K.M., and Tailleur, I.L., 1988, Radiolarian biostratigraphy of the Otuk Formation in and near the National Petroleum Reserve area, northern Alaska: U.S. Geological Survey Professional Paper 1399, p. 725-776. |
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