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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.

References