Sample Detail of
Sample: Sample No. 79ANs31A
Locality: Field No. 79ANs31A
Description: Lat. 68o, 20 min. N.; Long. 158o, 19 min. W. Gray, green, or black weathering chert and shale, interbedded with fossiliferous shaley limestone. (description from Jones and Murchey E&R report dated 7/1/80) [No locality description given in Dutro E&R report of 10/31/79] [Dover et al., 2004, p. 69 (Table 4) provides following description: Howard Pass B-4. Lat. 68o 19'20" N., Long. 158o 19'05" W."][No description given in Nelson and Nelson, 1982; shown as locality 12 of map (Table 1)]
Location: Alaska Quadrangle: Howard Pass B-4
Lat.: 69o19'20 " Long.: 158o19'05 "
Reference
Title: Report on Referred Fossils ,  1980 (07/01)
Report by: David L. Jones , Benita Murchey
Referred by: Steven W. Nelson
Age: Late Triassic
Occurrence(s)
No. Group Name Qty Notes
1 Radiolarian Capnuchosphaera sp.
2 Radiolarian Canoptum sp.

Title: Report on Referred Fossils ,  1979 (10/31)
This report covers four collections from the vicinity of Siniktanneyak Mtn.
Report by: J. Thomas Dutro , Jr.
Referred by: Steven W. Nelson
Age: Norian (perhaps Norian)
Comment:Preliminary examination of two collections indicates that they are probably Late Triassic and Late Devonian in age, respectively. Collection 79ANs31A contains Triassic flat clams, probably MONOTIS and perhaps of Late Triassic (Norian) age. This collection has been sent to Norm Silberling for examination.
Occurrence(s)
No. Group Name Qty Notes
1 Bivalves Triassic flat clams, probably Monotis

Title: Geologic and Fossil Locality Maps of the West-Central Part of the Howard Pass Quadrangle and Part of the Adjacent Misheguk Mountain Quadrangle, Western Brooks Range, Alaska (part 2 of single issue)) ,  2004
Report by: Jim Dover , Irv L. Tailleur , Julie A. Dumoulin
Age: Norian (Late Triassic (Norian))
Formation: Otuk Formation
Comment:Age: Late Triassic (Norian)

Shown as locality 117 on Sheet 2; map unit JTro

Sample 86SK239A (table 2) from approximately this locality contains radiolarians of Triassic age.

REFERENCE:
Nelson, S.W., and Nelson, W.H., 1982, Geology of Siniktanneyak Mountain ophiolite, Howard Pass quadrangle, Alaska: U.S. Geological Survey Miscellaneous Field Studies Map MF-1441, scale 1:63,360.

Occurrence(s)
No. Group Name Qty Notes
1 Bivalves Pelecypods cited also in Nelson and Nelson, 1982, table 1, loc. 12
2 Radiolarian radiolarians

Title: Geology of the Siniktanneyak Mountain ophiolite, Howard Pass quadrangle, Alaska ,  1982
Report by: Steven W. Nelson , Willis H. Nelson
Age: Norian (Late Triassic (Norian))
Formation: Unnamed (Sedimentary rocks, undivided (Triassic to Devonian))
Comment:Age: Upper Triassic (Norian)

Shown as locality 12 on map; Map symbol: TrDs

Occurrence(s)
No. Group Name Qty Notes
1 Radiolarian Radiolarians Identified by D. Jones; Report No. A-80-18M
2 Bivalves Pelecypods Identified by Norm Silberling ; Report No. A-79-36