Improved Precision 14C Measurements and Natural 14C Variations Around 10,000 Cal BP

Tomasz Goslar, Mieczysław F Pazdur
1989 Radiocarbon: An International Journal of Cosmogenic Isotope Research  
Thirty-one samples of 5 tree rings from a single oak trunk with 300 tree rings were measured with improved precision to study natural 14C variations in the period from ca 9750 – 10,050 cal bp. Negative correlation was found between Δ 14C values and tree-ring indices. The pattern of 14C changes in the studied interval closely resembles the changes observed in several periodically spanned intervals within the limits of high-precision calibration data sets.
doi:10.1017/s0033822200012455 fatcat:ps5eemkeofbpfckhh2hc36ynt4