Dendrochronologic Calibration of the Radiocarbon Time Scale

Abstract Extensive radiocarbon analyses have been made of dendrochronologically dated wood. The resultant radiocarbon data are not in total agreement with the conventional solar calendar as exemplified by the tree-ring chronology. The discrepancy reaches a maximum between 4060 B.C. to 7350 B.C. when radiocarbon dates are too young by 800 to 870 yr. Using a compatible set of 549 dated samples as a working base, a calibration table has been derived for conversion of conventional radiocarbon dates to calendar dates. This conversion table covers the period of time from A.D. 1600 to 5400 B.C. Data are also given to facilitate the calculation of the accuracy of the corrected date by a simple, illustrated method.