University of Wisconsin Radiocarbon Dates VII

1 January 1970

journal article
research article
Published by Cambridge University Press (CUP) in Radiocarbon

Vol. 12 (1) , 335-345
https://doi.org/10.1017/s0033822200036377

Abstract

The radiocarbon dates obtained since August, 1968, are reported here. Wood, charcoal, and peat samples are pretreated with dilute NaOH and dilute H₃PO₄ before conversion to the methane used as counting gas; marls and lake cores are treated with acid only. The reported dates have been calculated using 5568 years as the half-life of C¹⁴, 1950 as the reference year. Samples are run at least once in each of two 0.5 liter counters at 3 atm pressure for a minimum total of 15,000 counts. The standard deviation quoted includes only the 1σ of the counting statistics of background, sample, and standard counts.

Keywords

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