Sample Detail of
Sample: Sample No. 91AD11J -- USGS No. 31744-PC
Locality: Field No. 91AD11J
Description: Howard Pass C-3. Lat. 68o 35'55" N., Long. 157o 41'00" N. Sample from cross- and parallel-laminated, fine-grained limestone bed (70 cm thick), 1 m above base of 80-m-thick measured section of unit Mlri. Thin section is calcareous spiculite containing lesser siliceous spicules, calcite-replaced radiolarians, and laminae of noncalcareous mud. Table 4 contains additional data from this locality. (description from Dover et al., 2004, p. 33 (Table 1)); [Field nos. 91AD11A, 11G, and 11J are from about an 80 m section of Lisburne Group in the Ipnavik allochthon on a northwest-trending ridge, 2 km southeast of the headwaters of Ribbon Creek and 0.4 km due west of an unnamed tributary of Cutaway Creek. Samples from north side of ridge, east slope. Top of ridge at about 680 m. From lat. 68°54.8', long. 157°38.8', sec. 11, T. 10 S., R. 25 W., Howard Pass C-3 quadrangle.

Field no. 91AD11J (USGS colln. 31744-PC): 1 m above base of section (about 70 m below 91AD11A); 70 cm limey layer with cross and parallel laminations--mostly rather fine grained. (description from Harris, 1992 E&R report)]
Location: Alaska Quadrangle: Howard Pass C-3
Township&Range: 10 S. 25 W. Section: 11
Lat.: 68o35'55 " Long.: 157o41'00 "
Reference
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
Report by: Jim Dover , Irv L. Tailleur , Julie A. Dumoulin
Age: Kinderhookian-Osagean (late Kinderhookian - middle Osagean (late Early Mississippian))
Formation: Lisburne Group (Rim Butte unit of Lisburne Group of Dumoulin and others (1993) (Mississippian))
CAI:Min: 2
Comment:Age: late Early Mississippian (late Kinderhookian-middle Osagean)

Biofacies: Indeterminate

Shown as locality 29 on Sheet 2; map unit: Mlri

CAI=2

Occurrence(s)
No. Group Name Qty Notes
1 Conodonts 3 Pa elements of Bispathodus stabilis (Branson and Mehl) All conodonts identified by A.G. Harris
2 Conodonts 1 incomplete juvenile Pa element of Gnathodus sp. indet.
3 Conodonts 1 Sa element fragment of Kladognathus sp. indet.
4 Conodonts 2 unassigned Pb elements
5 Conodonts 21 indet. bar, blade, and platform fragments

Title: Report on Referred Fossils ,  1992 (06/25)
All samples with the prefix 90AD59 are from a measured section through the west end of Ivotuk Hills, east side of Otuk Creek (west side of hill 745 m), sec. 20, T. 11 S., R. 16 W., lat. 68°28.5', long. 155°43.0'. Basal unit (59C) was mapped as "Kayak Shale"; all other samples are from the Lisburne Group.
Report by: Anita G. Harris
Referred by: Julie A. Dumoulin , Jeanine Schmidt
Age: Kinderhookian-Osagean (late Kinderhookian - middle Osagean)
Formation: Lisburne Group
CAI:Min: 2
Comment:BIOFACIES: Indeterminate.

AGE: late Kinderhookian-middle Osagean

CAI=2

WEIGHTS & INSOLUBLE RESIDUES: WGT. (kg) 8; >20 MESH INSOL. RES., G 760 g.; 20-200 MESH INSOL. RES., G 202 g.

Occurrence(s)
No. Group Name Qty Notes
1 Conodonts 3 Pa elements of Bispathodus stabilis (Branson & Mehl)
2 Conodonts 1 incomplete juvenile Pa element of Gnathodus sp. indet.
3 Conodonts 1 Sa element fragment of Kladognathus sp. indet.
4 Conodonts 2 unassigned Pb elements
5 Conodonts 21 indet. bar, blade, and platform fragments