Reference Detail of

Report on Referred Fossils
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Stratigraphic range: Lower Cretaceous ?
Kinds of fossils: Foraminifera
Quadrangle or area: Sagavanirktok quad., Northeastern Alaska
Shipment No.: A-70-31
Referred by: Reiser, H. N.
Report prepared by: Bergquist, Harlan
Date: 12/20/1972

The following scattered samples yielded only a few Forams but these could be identified only generically and hence no age determination could be made. The samples are 70A Rr 221, 258A, 258C, 271, and 399, all collected in the Sagavanirktok quadrangle.

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70ARr 221, unit 3 , Sagavanirktok , At locality 70A Rr 221 on the west side of the Sadlerochit River, east end of the Sadlerochit Mountains, in secs. 10 and 11, T. 5 N., R. 31 E., a faulted section was sampled as follows: Kingak Shale (500 feet) was sampled as unit 3 but did not yield fossils. Above the Kingak a section of 135 feet of sandstone and shale was sampled as unit 5. Sample no. 1 from this unit is barren but a very limited fauna was found in sample no. 2 from the same unit. There are 2 specimens each of Haplophragmoides sp. and Verneuilinoides sp. which could offer nothing towards age determination. Still higher in the section at 221 was a sample collected as unit 8, no. 1, from a silt and shale interval overlying Sadlerochit ? sandstone and underlying Shublik beds, but it too is barren.
70A Rr 221, unit 5, no. 1 , Sagavanirktok , At locality 70A Rr 221 on the west side of the Sadlerochit River, east end of the Sadlerochit Mountains, in secs. 10 and 11, T. 5 N., R. 31 E., a faulted section was sampled as follows: Kingak Shale (500 feet) was sampled as unit 3 but did not yield fossils. Above the Kingak a section of 135 feet of sandstone and shale was sampled as unit 5. Sample no. 1 from this unit is barren but a very limited fauna was found in sample no. 2 from the same unit. There are 2 specimens each of Haplophragmoides sp. and Verneuilinoides sp. which could offer nothing towards age determination. Still higher in the section at 221 was a sample collected as unit 8, no. 1, from a silt and shale interval overlying Sadlerochit ? sandstone and underlying Shublik beds, but it too is barren.
70A Rr 221, unit 5, no. 2 , Sagavanirktok , At locality 70A Rr 221 on the west side of the Sadlerochit River, east end of the Sadlerochit Mountains, in secs. 10 and 11, T. 5 N., R. 31 E., a faulted section was sampled as follows: Kingak Shale (500 feet) was sampled as unit 3 but did not yield fossils. Above the Kingak a section of 135 feet of sandstone and shale was sampled as unit 5. Sample no. 1 from this unit is barren but a very limited fauna was found in sample no. 2 from the same unit. There are 2 specimens each of Haplophragmoides sp. and Verneuilinoides sp. which could offer nothing towards age determination. Still higher in the section at 221 was a sample collected as unit 8, no. 1, from a silt and shale interval overlying Sadlerochit ? sandstone and underlying Shublik beds, but it too is barren.
Haplophragmoides sp.
Verneuilinoides sp.
70A Rr 221, unit 8, no. 1 , Sagavanirktok , At locality 70A Rr 221 on the west side of the Sadlerochit River, east end of the Sadlerochit Mountains, in secs. 10 and 11, T. 5 N., R. 31 E., a faulted section was sampled as follows: Kingak Shale (500 feet) was sampled as unit 3 but did not yield fossils. Above the Kingak a section of 135 feet of sandstone and shale was sampled as unit 5. Sample no. 1 from this unit is barren but a very limited fauna was found in sample no. 2 from the same unit. There are 2 specimens each of Haplophragmoides sp. and Verneuilinoides sp. which could offer nothing towards age determination. Still higher in the section at 221 was a sample collected as unit 8, no. 1, from a silt and shale interval overlying Sadlerochit ? sandstone and underlying Shublik beds, but it too is barren.
70A Rr 258A , Sagavanirktok , Samples 70A Rr 258A-C from rocks mapped as Okpikruak Formation by Detterman and Keller in 1961 were collected along a cut bank on the east side of Kemik Creek, sec. 17, T. 1 S., R. 21 E.
Bathysiphon sp.
70ARr258B , Sagavanirktok , Samples 70A Rr 258A-C from rocks mapped as Okpikruak Formation by Detterman and Keller in 1961 were collected along a cut bank on the east side of Kemik Creek, sec. 17, T. 1 S., R. 21 E.
70ARr258C , Sagavanirktok , Samples 70A Rr 258A-C from rocks mapped as Okpikruak Formation by Detterman and Keller in 1961 were collected along a cut bank on the east side of Kemik Creek, sec. 17, T. 1 S., R. 21 E.
Haplophragmoides? sp.
Verneuilinoides? sp.
70ARr 271 (Mesozoic loc. M5585) , Mt Michelson , Ignek Valley, 2.8 miles S., 80 deg. W. of entrance to Katakturuk Canyon. Latitude: 69 deg., 34 min., 58 sec. N.; longitude: 145 deg., 42 min., 50 sec. W. (description from Miller E&R report of 6/3/81) [Collected from shale and siltstone between two narrow Ignek sandstone ridges on the north side of Ignek Valley. (description from Bergquist E&R report of 12/10/1972)]
Verneuilinoides sp.
Trochammina? sp.
Haplophragmoides sp.
70A Rr 399 , Sagavanirktok , From poorly consolidated siltstone to mudstone collected along the east fork of Tamayariak Creek.
Haplophragmoides sp.