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- Lab number
- GSC-2959
- Material dated
- wood; bois
- Taxa dated
- Salix sp. (7.2 g, id. by L.D. Farley-Gill)
- Locality
- 30-m-high bluff on a small stream 15 km downstream from 61-m-high bluff along Coppermine River, Northwest Territories
- Map sheet
- 86 K/09
- Submitter
- D. St-Onge
- Date submitted
- September 17, 2003
- Measured Age
- 8400 ± 80
- Normalized Age
- 8400 ± 80
- δ13C (per mil)
- -25.0
- Significance
- palaeobiology; paléobiologie
- Context
- basal unit of channel fill deposits
- Associated taxa
- Pisces: Salvelinus alpinus, Thymallus arcticus cf., Esox lucius cf., Cottus cognatus
- Comments
- Quicksand Creek: Channel fill deposits dated at a bluff on Quicksand Creek are correlated with fossiliferous silty sand containing fish bones and scales at a higher bluff along Coppermine River about 15 km upstream. Both deposits are considered to have formed as the delta of glacial lake Coppermine ceased to be active and infilling commenced. The fossils are the earliest dated records of fishes originating from the Beringian and Mississippian refugia and dispersing into Northwest Territories.