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High-Precision 14C Measurement of German and Irish Oaks to Show the Natural 14C Variations from 7890 to 5000 BC

Published online by Cambridge University Press:  18 July 2016

Gordon W. Pearson ,
Bernd Becker  and
Florence Qua
Gordon W. Pearson
Affiliation:
1Retired from Palaeoecology Centre, The Queen's University of Belfast, Belfast BT7 1NN, Northern Ireland
Bernd Becker
Affiliation:
2Institute für Botanik, Universität Hohenheim, D-7000 Stuttgart 70 Germany
Florence Qua
Affiliation:
1Retired from Palaeoecology Centre, The Queen's University of Belfast, Belfast BT7 1NN, Northern Ireland
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The availability of absolutely (dendrochronologically) dated German oak has allowed the Belfast laboratory to extend its published high-precision 14C measurements of Irish oak (Pearson et al. 1986) by 2680 yr. The samples were selected at contiguous 20-yr intervals, following a precedent adopted and considered satisfactory in previous publications. All samples were measured for at least 200,000 counts within the 14C channel. The statistical counting error, together with the error on standards, backgrounds and applied corrections, give a realistic precision quoted on each sample of ± 2.5‰ (± 20 yr). This error is considered high-precision for sample ages of 7000–8000 BP.

Type
Articles
Information
Radiocarbon , Volume 35 , Issue 1 , 1993 , pp. 93 - 104
Copyright
Copyright © The American Journal of Science 

References

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