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Lab number
Beta-39223
Material dated
organic sediment; s├ędiment organique
Locality
north of Point Roberts, ca. 2 m asl, Strait of Georgia, British Columbia
Map sheet
92 G/03
Date submitted
March 8, 0099
Date uploaded
February 14, 2020
Normalized Age
4260 ┬▒ 60
Significance
St. Mungo
Stratigraphic component
Zone F
Context
Zone F, base of muck (Layer FA) on top of shell midden (Layer FB), ca. 100 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