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Lab number
Material dated
dog bone collagen; collagène osseux de chien
Taxa dated
Canis familiaris skull
north of Point Roberts, ca. 2 m asl, Strait of Georgia, British Columbia
Map sheet
92 G/03
Date submitted
February 13, 0097
Date uploaded
February 14, 2020
Measured Age
1260 ± 60
Normalized Age
890 ± 60
δ13C (per mil)
Marpole / Stselax
Stratigraphic component
Zone A
Zone A, Layer AB/AC contact
Additional information
It is assumed that this has not been corrected previously for isotopic fractionation.
DgRs-2, Tsawwassen: The excavaters distinguish seven zones (A-G), each with its own stratigraphic and cultural sequence. R. Brolly (p.c. 1999) examined the reports from the Beta laboratory and confirmed that the dates on human bones are uncorrected ages. These must be normalized by adding at least 100 years to the mean, but they cannot be precisely corrected for isotopic fractionation in the absence of measured C-13 ratios.