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Revision and Tentative Extension of the Tree-Ring Based 14C Calibration, 9200–11,855 cal BP

Published online by Cambridge University Press:  18 July 2016

Bernd Kromer
Affiliation:
Heidelberg Academy of Sciences, Institute of Environmental Physics, INF 366 D-69120 Heidelberg, Germany
Marco Spurk
Affiliation:
Institute of Botany, University of Hohenheim 210, D-70593 Stuttgart, Germany
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Abstract

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We report radiocarbon calibration data based on the revised German oak and pine series. The age range of the absolutely dated German oak series has been extended to 10,430 cal bp. The German pine series is tentatively linked to the oak series by 14C, and now reaches back to 11,871 cal bp (±20 yr). The revisions of the tree-ring time scale of the German oak chronology solved long-standing apparent discrepancies in the mid-Holocene 14C calibration data sets. The calibration data set based on the floating German pine is now in close agreement with the Preboreal part of 14C calibration series obtained from most varve chronologies and corals.

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Copyright © The American Journal of Science