Sample Detail of
Sample: Sample No. 92AD51I -- USGS No. DR 1522
Locality: Field No. 92AD51I
Description: Howard Pass C-5. Lat. 68o 44'50" N., Long. 158o 55'20" W. A 5-cm-thick layer of light-gray to light-green chert, within an interval of red chert; approx. 13 m stratigraphically below(?) 92AD51E. In thin section, chert is pale-gray and very fine grained, and contains abundant radiolarians; tests filled with coarser crystalline quartz or chalcedony. (description from Dover et al., 2004, p. 51 (Table 2)); Formation: Possible Siksikpuk facies - Triassic Pc. [USGS Howard Pass 1:250,000 C5 quadrangle, T. 8 S., R. 30 W., sec. 19; NE side of NE-trending rise at elevation 740 m; approx. 2.0 mi west of Jubilee Creek and 3.0 mi north of confluence of Jubilee and Rampart Creeks; same locality as 92AD51E. Lat 68°44'50", long 158°55'30". (description from Blome and Reed E&R report dated June 23, 1993; Shipment no. A-92-9D)]
Location: Alaska Quadrangle: Howard Pass C-5
Township&Range: 8 S. 30 W. Section: 19
Lat.: 68o44'50 " Long.: 158o55'20 "
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: Osagean-Meramecian (late Early to early Late Mississippian (Osagean - Meramecian))
Formation: Lisburne Group (Rim Butte unit of Lisburne Group of Dumoulin and others (1993) (Mississippian))
Comment:Age: late Early to early Late Mississippian (Osagean to Meramecian).

Shown as locality 1 on Sheet 2; map unit: Mlri

REFERENCE
Holdsworth, B.K., and Murchey, B.L., 1988, Paleozoic radiolarian biostratigraphy of the northern Brooks Range, Alaska, in Gryc, G., ed., Geology and Exploration of the National Petroleum Reserve in Alaska, 1974-1982: U.S. Geological Survey Professional Paper 1399, p. 777-792.

Occurrence(s)
No. Group Name Qty Notes
1 Radiolarian Poorly preserved forms including Belowea sp. radiolarians identified by C.D. Blome and K.M. Reed
2 Radiolarian Scharfenbergia impella group (usage of Holdsworth and Murchey, 1988)
3 Radiolarian Scharfenbergia sp. cf. S. tailleurense

Title: Report on Referred Fossils ,  1993 (06/23)
Report by: Charles D. Blome , Katherine M. Reed
Referred by: J. H. Dover
Age: Osagean-Meramecian (Early to mid Mississippian (Osagean to Meramecian))
Formation: Siksikpuk Formation (Possible Siksikpuk Formation facies - Triassic Pc)
Comment:Age: Early to mid Mississippian (Osagean to Meramecian)

REFERENCE:
Holdsworth, B.K., and Murchey, B.L., 1988, Paleozoic radiolarian biostratigraphy of the northern Brooks Range, Alaska, in Gryc, G., ed., Geology of the National Petroleum Reserve area, northern Alaska: U.S. Geological Survey Professional Paper 1399, p. 777-792.

Occurrence(s)
No. Group Name Qty Notes
1 Radiolarian Poorly preserved forms including:
2 Radiolarian Belowea sp.
3 Radiolarian Scharfenbergia impella group (usage of Holdsworth and Murchey, 1988)
4 Radiolarian Scharfenbergia sp. cf. S. tailleurense