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Upper Colville River, Alaska

Map of Northern Alaska       Upper Colville Fossil Images Unassigned Fossil Images

 

This interactive map of part of the Colville River, Northern Alaska, shows the locations of plant fossil collections made by J.T. Parrish and R.A. Spicer in 1985 and 1989. Click on a number for more details on that site. The red outlined area links to another map showing positions of florules (plant fossil assemblages) collected by C.J. Smiley along both the Colville and Chandler Rivers.

Interactive map of the Upper Colville River Hotspot linking to 85RAS09 Hotspot linking to Smiley's Colville and Chandler River localities. Hotspot linking to 85RAS02 Hotspot linking to 85RAS01 Hotspot linking to 85RAS03 Hotspot linking to 85RAS04 Hotspot linking to 85RAS05 Hotspot linking to 85RAS06 Hotspot linking to 85RAS07 Hotspot linking to 85RAS08 Hotspot linking to 85RAS10 Hotspot linking to 85RAS11 Hotspot linking to 85RAS12 Hotspot linking to 85RAS13 Hotspot linking to 85RAS14 Hotspot linking to 85RAS13 Hotspot linking to 85RAS16 Hotspot linking to 85RAS17 Hotspot linking to 85RAS18 Hotspot linking to 85RAS19 Hotspot linking to 89RAS1_3 Hotspot linking to 89RAS04 Hotspot linking to 89RAS05 Hotspot linking to 89RAS06 Hotspot linking to 89RAS07 Hotspot linking to 89RAS09 Hotspot linking to 89RAS10 Hotspot linking to 89RAS11 Hotspot linking to 89RAS12 Hotspot linking to 89RAS164_320

Locality 89JTP12

Description: The lowermost part of the section consists of rooted cross-bedded sands and siltstones containing ironstone concretions. These contain Podozamites, Pityophyllum, taxodiaceous conifers (e.g. Cephalotaxopsis), ferns, a possible Ginkgo, platanoid angiosperms, pinnately compound angiosperms, large logs and branchwood. Above this is a thin coal containing conifers and Equisetites capped by a rooted siltstone capped by a thin bentonite. Into this siltstone projects an upright tree base. This is overlain by a rooted cross bedded siltstone and sandstone unit with ironstone concretions. Above this are three coals mostly conifer dominated with Podozamites in a carbonaceous shale at the base of the coals. Overlying the coals is a ripple and dune laminated very fine gray sandstone with platanoid leaves.

 

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