Sample Detail of
Sample: Sample No. 86Tr2A -- USGS No. MR 7272
Locality: Field No. 86Tr2A
Description: Howard Pass C-5. Lat. 68o 41'53" N., Long. 158o 27'50" W. Sample from chert closely associated with large slab (or boudin) of tasmanites-bearing rock; chert resiude is medium-gray. (description from Dover et al., 2004, p. 64 (Table 2))
Location: Alaska Quadrangle: Howard Pass C-5
Lat.: 68o41'53 " Long.: 158o27'50 "
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: Mississippian (Mississippian?)
Formation: Unnamed (Rocks of the Picnic Creek sequence, undivided (Lower Cretaceous (Neocomian) to Mississippian))
Comment:Age: Mississippian? Poorly preserved stauraxon radiolarians in this sample are more likely Paleozoic (Mississippian?) rather than Mesozoic forms.

Shown as locality 157 on Sheet 2; map unit: KMp

Occurrence(s)
No. Group Name Qty Notes
1 Radiolarian ?Latentifistula impella (Ormiston and Lane) Group Sample identified by B. Murchey, USGS
2 Sponges Sponge spicules (abundant, but less abundant than radiolarians; include hexactine spicules [Hexactinellida] and ?anatriaene, strongyle, and large matted monaxon spicules [Demospongiaea?]
3 Radiolarian Preservation = 2 on a scale of 1-5