Journal
QUATERNARY GEOCHRONOLOGY
Volume 22, Issue -, Pages 99-106Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.quageo.2014.03.003
Keywords
US-ESR age; Uncertainty; Monte Carlo simulation; USESR program; DATA program
Funding
- French National Museum of Natural History
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The combination of electron spin resonance (ESR) and U-series dating approach is increasingly being used to fossil teeth from archaeological sites. A rigorous age uncertainty assessment is needed for this dating method. However, it is difficult to provide partial derivatives of the combined ESR/U-series (US) model, as required by the law of propagation of uncertainties. In this study, we developed a new age calculation MATLAB program, called USESR, using a Monte Carlo approach for estimating the age and the age uncertainty for tooth enamel. Tests have been performed with virtual samples (n = 64). The results suggest that this Monte Carlo approach can provide reliable US-ESR age and reduced age uncertainty in comparison with those obtained by the routinely used program, DATA. The results also show that the new program has higher tolerance limits of U-series disequilibrium than the DATA program for US-ESR age calculations. (C) 2014 Elsevier B.V. All rights reserved.
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