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Intervalidation of Dendrochronology and 14C Dating on a 700-yr Tree-Ring Sequence Originating from the Eastern Carpathians

Published online by Cambridge University Press:  27 May 2019

Gabriela O Sava
Affiliation:
RoAMS Laboratory, Horia Hulubei National Institute for Physics and Nuclear Engineering, Reactorului 30, 077125, Măgurele-Bucharest, Romania Politehnica University of Bucharest, Splaiul Independenţei 313, 060042, Bucharest, Romania
Ionel Popa
Affiliation:
Marin Drăcea National Institute for Research and Development in Forestry, Calea Bucovinei 73 bis, 725100, Câmpulung Moldovenesc, Suceava, Romania
Tiberiu B Sava*
Affiliation:
RoAMS Laboratory, Horia Hulubei National Institute for Physics and Nuclear Engineering, Reactorului 30, 077125, Măgurele-Bucharest, Romania
Aurelia Meghea
Affiliation:
Politehnica University of Bucharest, Splaiul Independenţei 313, 060042, Bucharest, Romania
Cristian Mănăilescu
Affiliation:
RoAMS Laboratory, Horia Hulubei National Institute for Physics and Nuclear Engineering, Reactorului 30, 077125, Măgurele-Bucharest, Romania
Maria Ilie
Affiliation:
RoAMS Laboratory, Horia Hulubei National Institute for Physics and Nuclear Engineering, Reactorului 30, 077125, Măgurele-Bucharest, Romania
Andrei Robu
Affiliation:
RoAMS Laboratory, Horia Hulubei National Institute for Physics and Nuclear Engineering, Reactorului 30, 077125, Măgurele-Bucharest, Romania
Boglárka Tóth
Affiliation:
Anno Domini Dendrolab, Miercurea Ciuc, Romania
*
*Corresponding author. Email: tiberiu.sava@nipne.ro.

Abstract

We present a comparative study on a 700-yr sequence of dendrochronologically ordered tree-rings of Pinus cembra originating from Eastern Carpathians for the period AD 1009–1709. This period covers the solar minima of the Little Ice Age. The aim of this study was to assess the accuracy of our radiocarbon (14C) determinations interpreted on the IntCal13 calibration data and to observe any apparent offsets. The 14C measurements on single and double tree-rings were “wiggle-matched” to secure the dendrochronology cross-matching of all the Pinus cembra wood pieces. The results showed a very good agreement between the age datasets for four out of five wood trunks. However, for one of them a new cross-matching was performed after a quality assurance test, establishing an earlier 48-yr position, recommended by wiggle-matching Bayesian statistics and dendrochronological analysis. Following this adjustment, the quantification of the 14C level variability with respect to the IntCal13 calibration curve was obtained by calculating Δ14C for all tree-ring samples. As a final conclusion, an insignificant 14C concentration offset of –0.63 ± 3.76‰ was found for the Romanian samples.

Information

Type
Conference Paper
Copyright
© 2019 by the Arizona Board of Regents on behalf of the University of Arizona 

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