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High-Precision 14C Measurement of Irish Oaks to Show the Natural 14C Variations from AD 1840 to 5210 BC

Published online by Cambridge University Press:  18 July 2016

G W Pearson ,
J R Pilcher ,
M G L Baillie ,
D M Corbett  and
F Qua
G W Pearson
Affiliation:
Palaeoecology Centre, The Queen's University of Belfast, Northern Ireland
J R Pilcher
Affiliation:
Palaeoecology Centre, The Queen's University of Belfast, Northern Ireland
M G L Baillie
Affiliation:
Palaeoecology Centre, The Queen's University of Belfast, Northern Ireland
D M Corbett
Affiliation:
Palaeoecology Centre, The Queen's University of Belfast, Northern Ireland
F Qua
Affiliation:
Palaeoecology Centre, The Queen's University of Belfast, Northern Ireland
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Abstract

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High-precision measurement of dendrochronologically dated Irish oak at bi-decade/decade intervals has continued in the Belfast laboratory, extending the 14C data base from ca AD 1840 to 5210 BC. The dendrochronology is now considered absolute (see Belfast dendrochronology this conference) (Brown et al, 1986) and a continuous detailed curve is presented, showing the natural variations in the atmospheric concentration of 14C over >7000 years. Each data point has a precision of <2.5., and some 4500 years have now been compared with Seattle, giving excellent agreement. Discussion of this data base and the justification of the claimed accuracy is given together with a comparison of other chronologies. Some of the advantages and limitations of the above are discussed.

Information

Type
Research Article
Information
Radiocarbon , Volume 28 , Issue 2B , 1986 , pp. 911 - 934
Copyright
Copyright © The American Journal of Science 

References

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