• High-Precision Calibration of the Radiocarbon Time Scale, 3930-3230 Cal BC

      De Jong, A. F. M.; Becker, Bernd; Mook, W. G. (American Journal of Science, 1986-01-01)
    • Radiocarbon Calibration Data for the 6th to the 8th Millennia BC

      Kromer, Bernd; Rhein, Monika; Bruns, Michael; Schoch-Fischer, Hildegard; Münnich, Karl Otto; Stuiver, Minze; Becker, Bernd (American Journal of Science, 1986-01-01)
      14C calibration curves derived from South German oak tree-ring series are presented. They cover the interval between 4400 and 7200 BC complementing existing data sets and extending them to older periods. The atmospheric 14C level before 6200 BC no longer follows the long-term sinusoidal trend fitted to the bristlecone data. This observation is supported by a tentative match of the Main 9 series.