Sample Detail of
Sample: Sample No. 78Cx27A1
Locality: Field No. 78Cx27A1
Description: From lat. 68o 21 min. 12 sec., long. 158o 17 min. 00 sec., Howard Pass quad. (description from Harris E&R report of 3/7/79) [Howard Pass B-4. Lat. 68o 21'00" N., Long. 158o 16'15" W. Collected from discrete carbonate block within Copter Peak basalt unit, slightly northwest of 92AD25E (description from Dover et al., 2004, p. 48 (Table 1))]
Location: Alaska Quadrangle: Howard Pass B-4
Lat.: 68o21'12 " Long.: 158o16'15 "
Reference
Title: Report on Referred Fossils ,  1979 (03/07)
Continued in A-79-11a.
Report by: Anita G. Harris
Referred by: Steven M. Curtis , Irv L. Tailleur
Age: Silurian-Devonian
CAI:Min: 1.5
Comment:This belodellid is common in Silurian and Devonian faunas. Belodellas do not occur above the Devonian. The conodont "pearls" are dimpled lamellar apatite spheres that have been reported associated with conodonts from Upper Cambrian through Carboniferous deposits. It has been suggested that they are pearls secreted by the conodont-bearing animal. They are of little biostratigraphic use.

AGE: Silurian-Devonian.
CAI=about 1-1/2 indicating the host rock never reached in excess of 90o C.

1.7 kg of carbonate was processed for conodonts (100 g of +20 mesh material remained undissolved after acid treatment)

Occurrence(s)
No. Group Name Qty Notes
1 Conodonts 1 Belodella resima (Philip)
2 Conodonts 8 conodont "pearls"

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-Devonian
Formation: Unnamed (Basalt (Jurassic? to Devonian?))
CAI:Min: 1.5
Comment:Age: Silurian-Devonian

Biofacies: Indeterminate

Shown as locality 111 on Sheet 2; map unit: JDbc

CAI=1.5

Occurrence(s)
No. Group Name Qty Notes
1 Conodonts 1 Belodella resima (Philip) All conodonts identified by A.G. Harris
2 Conodonts 8 conodont pearls