Sample Detail of
Sample: Sample No. 91Tr08
Locality: Field No. 91Tr08
Description: Howard Pass C-3. Lat. 68o 30.7' N., Long. 157o 36.0' W. Very fine grained, dark-gray, fractured limestone. Thin section is brecciated interlayers of dark, noncalcareous mudstone containing 20-40 percent sponge spicules, and fine-grained limestone containing minor sponge spicules and rare relict radiolarians. (description from Dover et al., 2004, p. 37 (Table 1); [Howard Pass C-3 quad. 68°30.73', 157°36.0'. Probable Lisburne geoblob of the Ipnavik allochthon. Thin section indicates sponge spiculite (20-40 percent) in dark, noncalcareous mud matrix and minor spong spicules in calcite matrix; rare relict radiolarians. Thin section is brecciated.
Rubble subcrop patch. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]
Location: Alaska Quadrangle: Howard Pass C-3
Lat.: 68o30.7 ' Long.: 157o36.0 '
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: Silurian-Permian
Formation: Lisburne Group (Rim Butte unit of Lisburne Group of Dumoulin and others (1993) (Mississippian))
CAI:Min: 1.5
Comment:Age: Silurian-Permian

Biofacies: Indeterminate (too few conodonts)

Shown as locality 64 on Sheet 2; map unit: Mlri

CAI=1.5

Occurrence(s)
No. Group Name Qty Notes
1 Conodonts 3 indeterminate ramiform fragments All conodonts identified by A.G. Harris

Title: Report on Referred Fossils ,  1993 (09/17)
This report is long (1.5 years) overdue, but I have been exceedingly busy writing papers, responding to reviewers and editors comments and preparing talks. I am finally returning to a partial E&R mode and your collections were at the top of the list.
Report by: Anita G. Harris
Referred by: Irv L. Tailleur , John S. Kelley
Age: Silurian-Permian
Formation: Lisburne Group (probable Lisburne Group geoblob)
CAI:Min: 1.5
Comment:Age: Silurian-Permian
Biofacies: Indeterminate (too few conodonts)
Thin section description by Julie A. Dumoulin.
CAI = 1.5

Heavy-mineral concentrate chiefly iron-oxide and weathered pyrite euheadra and euhedral clusters.

Occurrence(s)
No. Group Name Qty Notes
1 Conodonts 3 indeterminate ramiform elements