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- Lab number
- S-2911
- Field number
- 86-DCA-504
- Material dated
- narwhal bone collagen; collagène osseux de narval
- Taxa dated
- Monodon monoceros tusk (id. by A.S. Dyke)
- Locality
- 2.1 km northeast of the head of Smith Bay, 7 m asl, M'Clintock Channel, northwestern Prince of Wales Island, Nunavut
- Map sheet
- 68 D/04
- Submitter
- A.S. Dyke
- Date submitted
- August 21, 0098
- Measured Age
- 7075 ± 120
- Normalized Age
- 7230 ± 120
- δ13C (per mil)
- -15.25
- Significance
- palaeobiology; paléobiologie
- Context
- stony clay in the floor of a gully overlooking M'Clintock Channel, 7 m asl
- Associated taxa
- Mammalia: Monodon monoceros
- Comments
- PhLl-VP: A large tusk fragment was embedded in frozen stony clay interpreted as glaciomarine sediment, overlain by 4 metres of postglacial silts with Astarte borealis, typical of middle and late Holocene marine sediments. The top of the silt is 11 metres above high tide line. Another tusk (86-DCA-505) was collected from the same level in the same gully about 20 metres downstream. Both tusks were frozen in and were broken off for collection. The tusks could date deposition of the stony clay (about 9.5 ka) or could have been driven into the stony clay by sea ice prior to emergence.