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Canada / NU / LlDj-1 (B-1) / RL-319
- Lab number
- RL-319
- Material dated
- seal bone collagen; collagène osseux de phoque
- Taxa dated
- Phocidae
- Locality
- on an island in the upper part of Cumberland Sound, 11.5 m asl, 8 km west of recently abandoned Immigen, Baffin Island, Nunavut
- Map sheet
- 26 G/14
- Submitter
- P. Schledermann
- Date submitted
- September 1, 0097
- Measured Age
- 500 ± 90
- Normalized Age
- 660 ± 90
- δ13C (per mil)
- -15.0
- Significance
- Neoeskimo, Modified Thule; Néoesquimau, Thuléen
- Context
- Test H-18, lowest level, 50-60 cm depth
- Associated taxa
- Mammalia: Phoca hispida, Phoca groenlandica, Erignathus barbatus, Balaena mysticetus, Rangifer tarandus
- Additional information
- It is assumed that this date was not corrected previously for isotopic fractionation.
- Comments
- LlDj-1, B-1: This is a Thule site with 15 winter houses. Schledermann (1975: 85) was aware of the need to make a correction for the marine reservoir effect. He cited a study by McGhee and Tuck (1976), then in manuscript, which had explored a constant correction of -400 years but had concluded by ignoring all sea mammal dates. Schledermann considered both approaches to be extreme. By considering his radiocarbon dates in relation to stylistic traits on recovered harpoon heads, he elected to subtract 200 years from the uncorrected means of the dates. Had he first corrected his dates for isotopic fractionation, the -400 year correction would have yielded very similar results, within measurement error.