An expanded radiocarbon age calibration procedure to correct for the marine reservoir effect in mixed marine and terrestrial samples

作者：Omori Takayuki^*; Nakamura Toshio

来源：Nuclear Instruments and Methods in Physics Research Section B: Beam Interactions with Materials and Atoms , 2010, 268(7-8): 969-971.

DOI：10.1016/j.nimb.2009.10.076

• Radiocarbon
• Age calibration
• Marine reservoir
• Human bones

Recently, the importance of statistical and probabilistic analysis to derive accurate C-14 data has been recognized. This paper discusses a C-14 calibration procedure to correct marine reservoir effect using the marine source contribution estimated as a probability distribution. In addition, we also developed the marine source estimation with delta C-13 and delta N-15 for the C-14 calibration in order to cover a complex mixture of terrestrial and marine carbon such as a human. In our calibration procedure, the C-14 date is weighted with the probability distribution of marine source contribution and the calibrated date depended on the marine C-14 intake can be evaluated. The age range calibrated by our procedure can be also reduced more than by conventional calibration methods. We illustrated the character of our calibration procedure by the example of human bones found from the archaeological shell mounds in Japan.

• 出版日期2010-4