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Revisions and Extension of the Hohenheim Oak and Pine Chronologies: New Evidence About the Timing of the Younger Dryas/Preboreal Transition

Published online by Cambridge University Press:  18 July 2016

Marco Spurk ,
Michael Friedrich ,
Jutta Hofmann ,
Sabine Remmele ,
Burkhard Frenzel ,
Hanns Hubert Leuschner  and
Bernd Kromer
Marco Spurk
Affiliation:
University of Hohenheim, Institute of Botany, D-70593 Stuttgart, Germany
Michael Friedrich
Affiliation:
University of Hohenheim, Institute of Botany, D-70593 Stuttgart, Germany
Jutta Hofmann
Affiliation:
University of Hohenheim, Institute of Botany, D-70593 Stuttgart, Germany
Sabine Remmele
Affiliation:
University of Hohenheim, Institute of Botany, D-70593 Stuttgart, Germany
Burkhard Frenzel
Affiliation:
University of Hohenheim, Institute of Botany, D-70593 Stuttgart, Germany
Hanns Hubert Leuschner
Affiliation:
University of Göttingen, Albrecht-v.-Haller-Institute for Plant Sciences, D-37075 Göttingen, Germany
Bernd Kromer
Affiliation:
Heidelberg Academy of Sciences, Institute of Environmental Physics, INF 366, D-69120 Heidelberg, Germany
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Abstract

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Oak and pine samples housed at the Institute of Botany, University of Hohenheim, are the backbone of the early Holocene part of the radiocarbon calibration curve, published in 1993 (Becker 1993; Kromer and Becker 1993; Stuiver and Becker 1993; Vogel et al. 1993). Since then the chronologies have been revised. The revisions include 1) the discovery of 41 missing years in the oak chronology and 2) a shift of 54 yr for the oldest part back into the past. The oak chronology was also extended with new samples as far back as 10,429 BP (8480 BC). In addition, the formerly tentatively dated pine chronology (Becker 1993) has been rebuilt and shifted to an earlier date. It is now positioned by 14C matching at 11,871-9900 BP (9922–7951 BC) with an uncertainty of ±20 yr (Kromer and Spurk 1998). With these new chronologies the 14C calibration curve can now be corrected, eliminating the discrepancy in the dating of the Younger Dryas/Preboreal transition between the proxy data of the GRIP and GISP ice cores (Johnsen et al. 1992; Taylor et al. 1993), the varve chronology of Lake Gościąż (Goslar et al. 1995) and the pine chronology (Becker, Kromer and Trimborn 1991).

Information

Type
Articles
Information
Radiocarbon , Volume 40 , Issue 3: INTCAL 98: CALIBRATION ISSUE , 1998 , pp. 1107 - 1116
Copyright
Copyright © The American Journal of Science 

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