Sample Detail of
Sample: Sample No. 91Tr05B
Locality: Field No. 91Tr05B
Description: Howard Pass C-3. Lat. 68o 31' N., Long. 157o 35.5' N. Sample from 1-m-thick lens of medium-brownish-gray-weathering, calcareous mudstone within black noncalcareous mudstone. Thin-section is carbonaceous dolomite crystal mosaic. Heavy-mineral concentrate includes very minor fluorite and barite(?). (description from Dover et al., 2004, p. 37 (Table 1)); [Howard Pass C-3 quad. 68°30.82', 157°35.75'. Kuna Formation: 1-meter lens of medium-brownish-gray-weathering, calcareous mudstone within black mudstone. Thin-section indicates "Kuna"-type dolomite crystal mosiac.
From West nose of Mount Bupto; Brooks Range allochthon. (description from Harris E&R report dated Sept. 17, 1993; Shipment no. A-93-11)]
Location: Alaska Quadrangle: Howard Pass C-3
Lat.: 68o31' " Long.: 157o35.5 '
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: Kuna Formation
CAI:Min: 1.5 - Max: 2
Comment:Age: Silurian-Permian

Biofacies: Indeterminate (too few conodonts)

Shown as locality 61 on Sheet 2; map unit lPMk

CAI+1.5-2

Occurrence(s)
No. Group Name Qty Notes
1 Conodonts 2 indeterminate bar 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: Kuna Formation
CAI:Min: 1.5 - Max: 2
Comment:Age: Silurian-Permian; many samples from the Kuna Fm. of the Brooks Range allochthon in the western-most Killik River quadrangle and across the Howard Pass quadrangle produce relatively long-ranging conodonts of Osagean to Meramecian age. At the type section of the Kuna in the Howard Pass quadrangle, conodonts from 9 m above the base of the type section indicate the lower part of the anchoralis-latus Zone (late Tournaisian) and conodonts from 6 m below the contact with the Etivluk indicate a late Tournaisian or early Visean age (Dumoulin, Harris, and Schmidt, in press, ICAM volume)
Biofacies: Indeterminate (too few conodonts)
Thin section description by Julie A. Dumoulin.
CAI = 1.5-2

Heavy-mineral concentrate includes very minor fluorite and barite(?).

Occurrence(s)
No. Group Name Qty Notes
1 Conodonts 2 indeterminate bar fragments