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Possibilities for Reconstructing Radiocarbon Level Changes During the Late Glacial by Using a Laminated Sequence of Gościaż Lake

Published online by Cambridge University Press:  18 July 2016

Tomasz Goslar ,
Tadeusz Kuc ,
Mieczysław F. Pazdur ,
Magdalena Ralska-Jasiewiczowa ,
Kazimierz Różański ,
Krystyna Szeroczyńska ,
Adam Walanus ,
Bogumił Wicik ,
Kazimierz Wieckowski  and
Maurice Arnold
...Show all authors
Tomasz Goslar
Affiliation:
Radiocarbon Laboratory, Institute of Physics, Silesian Technical University, Krzywoustego 2, PL-44-100 Gliwice, Poland
Tadeusz Kuc
Affiliation:
Institute of Physics and Nuclear Techniques, Academy of Mining and Metallurgy, Mickiewicza 30, PL-30-059 Kraków, Poland
Mieczysław F. Pazdur
Affiliation:
Radiocarbon Laboratory, Institute of Physics, Silesian Technical University, Krzywoustego 2, PL-44-100 Gliwice, Poland
Magdalena Ralska-Jasiewiczowa
Affiliation:
Szafer Institute of Botany, Polish Academy of Sciences, Lubicz 46, PL-31-512 Kraków, Poland
Kazimierz Różański
Affiliation:
International Atomic Energy Agency, Section of Isotope Hydrology (RIPC), Wagramerstrasse 5, A-1400 Vienna, Austria
Krystyna Szeroczyńska
Affiliation:
Institute of Geological Sciences, Polish Academy of Sciences, Żwirki i Wigury 93, PL-02-089 Warszawa, Poland
Adam Walanus
Affiliation:
Radiocarbon Laboratory, Institute of Physics, Silesian Technical University, Krzywoustego 2, PL-44-100 Gliwice, Poland
Bogumił Wicik
Affiliation:
Institute of Geography, Warsaw University, Krakowskie Przedmieście 26/28, PL-02-110 Warszawa, Poland
Kazimierz Wieckowski
Affiliation:
Institute of Geography and Spatial Organization, Polish Academy of Sciences, Krakowskie Przedmieście 30, PL-02-110 Warszawa, Poland
Maurice Arnold
Affiliation:
Centre des Faibles Radioactivités, CNRS-CEA, F-91198 Gif-sur-Yvette, France
Edouard Bard
Affiliation:
Centre des Faibles Radioactivités, CNRS-CEA, F-91198 Gif-sur-Yvette, France
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Abstract

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Laminated sediments of Gościaż Lake can be used as an independent source of material for calibrating the radiocarbon time scale. The varve chronology is based on three long cores from the deepest part of the lake, with one additional core from the second deepest part. From pollen and Cladocera spectra and stable isotope and chemical content sequences, we have determined the Allerød(AL)/Younger Dryas(YD) and Younger Dryas/Preboreal(PB) boundaries in the three long cores with relatively good accuracy, and have tentatively defined the AL/YD boundary in the fourth core. The Younger Dryas period contains at least 1520 varves, with 980 varves in fragments well replicated in all four cores. The duration of the Younger Dryas as recorded in sediments of Gościaż Lake corresponds well to the duration derived from 230Th/234U and 14C dates on Barbados corals, but disagrees with estimates from Soppensee, Lake Holzmaar and Swedish varves. Two AMS dates of terrestrial macrofossils from the PB and YD periods seem to fit both the data obtained for Swiss lake sediments and Barbados corals.

Type
IV. Paleoclimatology
Information
Radiocarbon , Volume 34 , Issue 3: Proceedings of the 14th International Radiocarbon Conference , 1992 , pp. 826 - 832
Copyright
Copyright © The American Journal of Science 

References

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