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Calibration Curve for Short-Lived Samples, 1900–3900 BC

Published online by Cambridge University Press:  18 July 2016

J. C. Vogel
Affiliation:
Quaternary Dating Research Unit, CSIR, P. O. Box 395, Pretoria 0001, South Africa
Johannes van der Plicht
Affiliation:
Centre for Isotope Research, University of Groningen, Nijenborgh 4, 9747 AG Groningen, The Netherlands
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Both the Pretoria and the Groningen radiocarbon laboratories performed high-precision analyses on 1–4 annual tree-ring samples made available by Bernd Becker from his South German oak dendrochronological series (Vogel et al. 1986; de Jong, Becker & Mook 1986). The Pretoria measurements were extended to overlap the Groningen set, and now cover the range from 1930 to 3350 BC (Vogel et al. 1993). The tree-ring dating of the Groningen samples has been adjusted and now ranges from 3200 to 3900 BC (de Jong, Mook & Becker 1989). Taken together, the data provide a calibration curve over two millennia, which is especially suitable for short-lived samples. The curve is shown in Figures 1A–D.

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Copyright © The American Journal of Science