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Late Glacial 14C Ages from a Floating, 1382-Ring Pine Chronology

Published online by Cambridge University Press:  18 July 2016

Bernd Kromer ,
Michael Friedrich ,
Konrad A Hughen ,
Felix Kaiser ,
Sabine Remmele ,
Matthias Schaub  and
Sahra Talamo
Bernd Kromer*
Affiliation:
Heidelberg Academy of Sciences, INF 229, D-69120 Heidelberg, Germany
Michael Friedrich
Affiliation:
Institute of Botany, Hohenheim University-210, D-70593 Stuttgart, Germany
Konrad A Hughen
Affiliation:
WHOI, Marine Chemistry and Geochemistry, Woods Hole, Massachusetts 02543, USA.
Felix Kaiser
Affiliation:
Swiss Federal Research Institute WSL, CH-8903 Birmensdorf and Geography Dept., University of Zürich, CH 8057 Zürich, Switzerland
Sabine Remmele
Affiliation:
Heidelberg Academy of Sciences, INF 229, D-69120 Heidelberg, Germany Institute of Botany, Hohenheim University-210, D-70593 Stuttgart, Germany
Matthias Schaub
Affiliation:
Swiss Federal Research Institute WSL, CH-8903 Birmensdorf and Geography Dept., University of Zürich, CH 8057 Zürich, Switzerland
Sahra Talamo
Affiliation:
Heidelberg Academy of Sciences, INF 229, D-69120 Heidelberg, Germany
*
Corresponding author. Email: [email protected].
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Abstract

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We built a floating, 1382-ring pine chronology covering the radiocarbon age interval of 12,000 to 10,650 BP. Based on the strong rise of Δ14C at the onset of the Younger Dryas (YD) and wiggle-matching of the decadal-scale Δ14C fluctuations, we can anchor the floating chronology to the Cariaco varve chronology. We observe a marine reservoir correction higher than hitherto assumed for the Cariaco site, of up to 650 yr instead of 400 yr, for the full length of the comparison interval. The tree-ring Δ14C shows several strong fluctuations of short duration (a few decades) at 13,800; 13,600; and 13,350 cal BP. The amplitude of the strong Δ14C rise at the onset of the YD is about 40, whereas in the marine data set the signal appears stronger due to a re-adjustment of the marine mixed-layer Δ14C towards the atmospheric level.

Type
Articles
Information
Radiocarbon , Volume 46 , Issue 3: IntCal04: Calibration Issue, Guest Editor: PAULA J REIMER , 2004 , pp. 1203 - 1209
Copyright
Copyright © The Arizona Board of Regents on behalf of the University of Arizona 

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