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2 2020

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Increase in 14C dating accuracy of prehistoric skeletal remains by optimised bone sampling: Chronometric studies on eneolithic burials from Mikulin 9 (Poland) and Urziceni-Vada Ret (Romania)

Chmielewski Tomasz J., Hałuszko Agata, Goslar Tomasz, Cheronet Olivia, Hajdu Tamás, Szeniczey Tamás, Virag Cristian

Geochronometria

2020

Vol. 47, no.1

196--208

In this research, sampling optimisation and modelling based thereon follow from the assumption that each human skeleton can be treated as a set of heterochronous carbon reservoirs capable of supplying at least an elementary sequence consisting of two 14C dates corresponding to the moment of birth (otic capsule) and that of demise (ribs), as well as an anthropologically defined lag between them. Two case studies demonstrate that the approach can raise the precision of 14C dates related to the death of the individuals. The benefits and main issues of this sampling strategy as well as the involved bioarchaeological conflict potential are taken under discussion.

A Tree-Ring chronology from Allerød–YD transition from Koźmin (Central Poland)

Krąpiec Marek, Szychowska-Krąpiec Elżbieta, Barniak Joanna, Goslar Tomasz, Kittel Piotr, Michczyńska Danuta J., Michczyński Adam, Piotrowska Natalia, Rakowski Andrzej, Wiktorowski Damian

Geochronometria

2020

Vol. 47, no.1

101--111

Subfossil trunks of pine (Pinus sylvestris L.) from the Late Weichselian were discovered in the site Koźmin in the Koło Basin, central Poland (Dzieduszyńska et al., 2014a). Another part of organic sediments with trunks was excavated in the frame of the research project. Altogether 224 samples from Koźmin were analysed dendrochronologically; they represented generally young trees, 40 to 70 years old. Based on the most convergent sequences, the chronology 2KOL_A1 was produced, 210 years in length. With the wiggle-matching method, it was dated to ca. 13065–12855 cal BP. Dendrochronological dating of trunks buried in organic sediments, most of which occurred in situ, revealed that tree deaths occurred successively, over more than 100 years. That could have been due to unfavourable climatic conditions, as well as extreme events, e.g. strong winds.