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University of Wisconsin Radiocarbon Dates VII

Published online by Cambridge University Press:  18 July 2016

Margaret M. Bender ,
Reid A. Bryson  and
David A. Baerreis
Margaret M. Bender
Affiliation:
Department of Meteorology, University of Wisconsin, Madison
Reid A. Bryson
Affiliation:
Department of Meteorology, University of Wisconsin, Madison
David A. Baerreis
Affiliation:
Department of Meteorology, University of Wisconsin, Madison
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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.

Type
Research Article
Information
Radiocarbon , Volume 12 , Issue 1 , 1970 , pp. 335 - 345
Copyright
Copyright © The American Journal of Science 

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