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Kukpowruk River

Introduction Geology     Kukpowruk Unassigned Fossils Fossil Images

 

The map on the right shows the localities along the Kukpowruk River sampled both by Smiley (reported in Smiley 1969a), Spicer and Herman (1996) and by Bob and Andrew Spicer in 1998. Click on the locality numbers to see further details of the sites and the fossil floras.

 

Map of Kukpowruk River Hotspot linking to Kukpowruk 98RAS17 Hotspot link to Smiley Section C page Link to Map of Smiley's Kukpowruk section D Hotspot linking to page describing Kukpowruk 96 locality 1 Hotspot linking to page describing Kukpowruk 96 locality 2 Hotspot linking to page describing Kukpowruk 96 locality 3 Hotspot linking to page describing Kukpowruk 96 locality 4 Hotspot linking to page describing Kukpowruk 96 locality 5 Hotspot linking to page describing Kukpowruk 96 locality 6 Hotspot linking to page describing Kukpowruk 96 locality 7 Hotspot linking to page describing Kukpowruk 96 locality 8 Hotspot linking to page describing Kukpowruk 96 locality 9 Hotspot linking to page describing Kukpowruk 96 locality 10 Hotspot linking to page describing Kukpowruk 96 locality 11 Hotspot linking to page describing Kukpowruk 96 locality 12 Hotspot linking to page describing Kukpowruk 96 locality 13 Hotspot linking to page describing Kukpowruk 96 locality 14 Hotspot linking to page describing Kukpowruk 96 locality 15 Hotspot linking to page describing Kukpowruk 96 locality 16 Hotspot linking to page describing Kukpowruk 96 locality 17 Hotspot linking to page describing Kukpowruk 96 locality 18 Hotspot linking to page describing Kukpowruk 96 locality 19 Hotspot linking to page describing Kukpowruk 96 locality 20 Hotspot linking to page describing Kukpowruk 96 locality 21 Hotspot linking to page describing Kukpowruk 96 locality 22 Hotspot linking to page describing Kukpowruk 96 locality 23 Hotspot linking to page describing Kukpowruk 96 locality 24 Hotspot linking to page describing Kukpowruk 96 locality 25 Hotspot linking to page describing Kukpowruk 96 locality 26 Hotspot linking to page describing Kukpowruk 96 locality 277 Hotspot linking to Kukpowruk 98RAS16 Hotspot linking to Kukpowruk 98RAS17 Hotspot linking to Kukpowruk 98RAS18 Hotspot linking to Kukpowruk 98RAS19 Hotspot linking to Kukpowruk 98RAS20 Hotspot linking to Kukpowruk 98RAS21 Hotspot linking to Kukpowruk 98RAS22 Hotspot linking to page describing Kukpowruk 96 locality 23Hotspot linking to page describing Kukpowruk 96 locality 24Hotspot linking to page describing Kukpowruk 96 locality 25Hotspot linking to page describing Kukpowruk 96 locality 26Hotspot linking to page describing Kukpowruk 96 locality 277 Hotspot link to Smiley Section C page Link to Map of Smiley's Kukpowruk section D Hotspot linking to page describing Kukpowruk 96 locality 1 Hotspot linking to page describing Kukpowruk 96 locality 2 Hotspot linking to page describing Kukpowruk 96 locality 3 Hotspot linking to page describing Kukpowruk 96 locality 4 Hotspot linking to page describing Kukpowruk 96 locality 5 Hotspot linking to page describing Kukpowruk 96 locality 6 Hotspot linking to page describing Kukpowruk 96 locality 7 Hotspot linking to page describing Kukpowruk 96 locality 8 Hotspot linking to page describing Kukpowruk 96 locality 9 Hotspot linking to page describing Kukpowruk 96 locality 10 Hotspot linking to page describing Kukpowruk 96 locality 11 Hotspot linking to page describing Kukpowruk 96 locality 12 Hotspot linking to page describing Kukpowruk 96 locality 13 Hotspot linking to page describing Kukpowruk 96 locality 14 Hotspot linking to page describing Kukpowruk 96 locality 15 Hotspot linking to page describing Kukpowruk 96 locality 16 Hotspot linking to page describing Kukpowruk 96 locality 17 Hotspot linking to page describing Kukpowruk 96 locality 18 Hotspot linking to page describing Kukpowruk 96 locality 19 Hotspot linking to page describing Kukpowruk 96 locality 20 Hotspot linking to page describing Kukpowruk 96 locality 21 Hotspot linking to page describing Kukpowruk 96 locality 22

 

 

Locality 96-13.  69° 05' 54" N  162° 53' 32" W

Corwin Formation

Specimens: 96 RAS 64, 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75

Description. The base of the section is composed of carbonacous shales and poor coals dominated by Podozamites. Podozamites also occurs abundantly in ironstone concretions associated with the coals and carbonacous shales. These are overlain by gray/brown mudstones also containing abundant fragmented Podozamites together with Equisetites, Pityophyllum and probably Ginkgo fragments. Up section (down river) gray, weathering to yellow, fine sandstones become more prevalent with wood fragments and impressions of logs. The sands are ripple marked with sometimes two phases of rippling: large ripples of approximately 10 cm wavelength within the troughs of which are smaller ripples (at right angles to the larger ones) with a 1 - 2 cm wavelength. The sediments also contain horizontal "U" shaped burrows and casts of bivalves 4 - 5 cm long (inoceramids?).

Interpretation. Going up section the sedimentary environment changes from a woody, Podozamites, dominated swamp to a marginal marine setting. The two types of ripples may indicate subaerial exposure with wind (or draining) ripples formed in the flooded troughs of the larger ripples formed by water flow (tidal or longshore currents?).

 

 
Hotspot link to Smiley Section C page Link to Map of Smiley's Kukpowruk section D

 

Hotspot link to Smiley Section C page Link to Map of Smiley's Kukpowruk section D