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Canada / ON / BiFu-? (Bearbrook) / GSC-3907OF
- Lab number
- GSC-3907OF
- Field number
- RAB-84-12
- Material dated
- marine shell; coquillage
- Taxa dated
- Hiatella arctica (id. by C.G. Rodrigues)
- Locality
- 0.2 km north of Bearbrook, Russell County, Ontario
- Map sheet
- 31 G/06
- Submitter
- S.H. Richard, C.G. Rodrigues
- Date submitted
- March 8, 2002
- Measured Age
- 10300 ± 110
- Normalized Age
- 10710 ± 110
- δ13C (per mil)
- -0.8
- Significance
- palaeobiology, Champlain Sea; paléobiologie, Mer Champlain
- Context
- gravel pit, in sediments containing the right tibia of a small phocid seal
- Associated taxa
- Mammalia: Phoca sp
- Additional information
- This date is on the outer fraction of the shells. The normalized age is 410 years older than the corrected age given in the date list.
- Comments
- BiFu-VP: A seal bone was found in sediments of the Champlain Sea dated by GSC-3907 on Hiatella arctica shells (Harington, 1988: 231). Two dates were determined, one on the outer fraction and one on the inner fraction, and they are in close agreement. These dates were unconventionally reported with corrections for isotopic fractionation corresponding to 0 parts per mil (McNeely and McCuaig, 1991: 2). To make the dates compatible with others in this database, the normalized ages are expressed by adding 410 years to the uncorrected ages, thereby normalizing the dates to -25 parts per mil. A marine reservoir correction would be needed to calibrate these dates.