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Lab number
Beta-34782
Material dated
charcoal; charbon de bois
Locality
north of Point Roberts, ca. 2 m asl, Strait of Georgia, British Columbia
Map sheet
92 G/03
Date submitted
June 4, 0098
Date uploaded
February 14, 2020
Measured Age
3500 ± 60
Normalized Age
1780 ± 100
Significance
Marpole
Stratigraphic component
Zone C
Context
Zone C, concentration in unit C9, layer CC, 20 cm depth
Comments
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.

References