Key points are not available for this paper at this time.
Precision 14 C analyses have been performed on samples comprising 1 to 4 annual rings from the south-central European dendrochronologic sequence of sub-fossil oak wood covering the period 1930 to 3100 bc. Apart from a major deviation in the 29th century bc, the 14 C fluctuations have amplitudes of ca 10‰ and a possible periodicity of 90 years. A 14 C peak at 2190 bc has a rise- and decay-time of <20 years indicating rather abrupt changes in the production rate of 14 C. The 14 C calibration curve derived from these data can be used for precise dating of the Early Bronze Age in the Near East.
Vogel et al. (Wed,) studied this question.
Synapse has enriched 5 closely related papers on similar clinical questions. Consider them for comparative context: