Sample Detail of
Sample: Sample No. 8-13-83A -- USGS No. 10750-SD
Locality: Field No. 8-13-83A
Description: Dark-gray fossiliferous wackestone to carbonate mudstone with corals and stromatoporoids from drill dore at abandoned prospect from T. 24 N., R. 10 W., lat. 67o 29.6 min., long. 160o 50.9 min. (description from Harris E&R report of 10/26/1983) [Oliver E&R report of 10/20/83 provides following description: "Drill core (geographically in place, but stratigraphically cardboard core boxes weathered) at copper prospect along Omar River. Baird Mtns. B-4 1:62,500, T. 24 N., R. 10 W."]
Location: Alaska Quadrangle: Baird Mts B-4
Township&Range: T24N R10W
Lat.: 67o29.6 ' Long.: 160o50.9 '
Reference
Title: Report on Referred Fossils ,  1983 (10/26)
The 20- to 200-mesh heavy- and light-mineral insoluble residues are being returned to Sue Karl.
Report by: Anita G. Harris
Referred by: Susan M. Karl , Inyo Ellersieck , Julie A. Dumoulin
Age: Emsian-Emsian (early Emsian - middle Emsian)
CAI:Min: 5 - Max: 6
Comment:2.25 kg of rock was processed (21 g of +20 mesh insoluble residue)

AGE: DEHISCENS through INVERSUS Zones (=early to middle Emsian) (see attached chart from Klapper and Johnson, 1980, showing Early and Middle Devonian conodont zones).
CAI=5 to 6 indicating host rock reached 300 to 400o C.

REFERENCE
Klapper, Gilbert, and Johnson, J.G., 1980, Endemism and dispersal of Devonian conodonts: Jour. Paleontology, v. 54, p. 400-455.

Occurrence(s)
No. Group Name Qty Notes
1 Conodonts Icriodus sp. indet. 6 large and abraded I element fragments, 2 S2 elements of Early Devonian morphotype
2 Conodonts 53 Panderodus unicostatus (Branson & Mehl) elements
3 Conodonts 6 Pa elements of Pandorinellina steinhornensis miae (Bultynck)
4 Conodonts 1 Pa element fragment of Pandorinellina sp. indet.
5 Conodonts 15 indet. bar, blade, and platform fragments

Title: Report on Referred Fossils ,  1983 (10/20)
Report by: William A. Oliver , Jr.
Referred by: Anita G. Harris
Age: Silurian-Devonian (Silurian - Devonian (pre-Famennian))
Comment:Silurian-Devonian, pre-Famennian. Preservation fair to poor.
Occurrence(s)
No. Group Name Qty Notes
1 Stromatoporoids Stromatoporoids: Massive sp.
2 Stromatoporoids Stromatoporoids: Fragments of massive and laminar as clasts
3 Tabulate Corals Alveolites sp.
4 Tabulate Corals Favositoid
5 Tabulate Corals Tabulate corals: indet. fragments as clasts
6 Rugose Corals Rugose coral fragment