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Lab number
Beta-38607
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
March 8, 0099
Date uploaded
February 14, 2020
Normalized Age
3850 ± 60
Significance
St. Mungo
Stratigraphic component
Zone D
Context
Zone D, hearth feature D10, Trench D1, unit D7, in differentiated mudflow (Layer DG) 20 cm above beach sand (Layer DH)
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