Sample Detail of
Sample: Sample No. 84JS16F
Locality: Field No. 84JS16F
Description: Coarse-grained, recrystallized, black, carbonaceous limestone from 1 mile SE of peak 3106 ft. in saddle between Kuna(?) black shale and very dark gray sandstone at elevation 2050 ft., sec. 4, T. 27 N., R. 12 W., lat. 67o 45.8 min., long. 161o 24.0 min., Baird Mountains D-5 quadrangle; submitted as Kuna Formation(?) of probable Mississippian age.
Location: Alaska Quadrangle: Baird Mts D-5
Township&Range: T27N R12W Section: Sec.4
Lat.: 67o45.8 ' Long.: 161o24.0 '
Reference
Title: Report on Referred Fossils ,  1985 (06/15)
Report by: Anita G. Harris
Referred by: Susan M. Karl , Julie A. Dumoulin , Jeanine Schmidt , Inyo Ellersieck
Age: Devonian-Mississippian
Formation: Kuna Formation (Kuna Formation?)
CAI:Min: 5 (CAI=5 indicating host rock reached at least 300 deg. C.)
Comment:4 kg of rock was processed (2.2 kg of +20 mesh and 70 g of 20-200 mesh insoluble residue).

Age: Devonian-Mississippian. CAI=5 indicating host rock reached at least 300o C.

Occurrence(s)
No. Group Name Qty Notes
1 Conodonts 1 Sc element of Devonian-Mississippian morphotype
2 Conodonts 9 indet. robust bar and blade fragments