Radiocarbon dating calibration methods


11-Feb-2016 15:01

1 - Department of Geosciences, 2 - Department of Physics, University of Arizona, Tucson, Arizona 85721, USA 3 - Research Laboratory for Archaeology and History of Art, University of Oxford, Oxford, OX1 3QJ, UK 4 - Institut für Mittelenergiephysik, ETH-Hönggerberg, CH-8093 Zürich, Switzerland 5 - Lamont-Doherty Geological Observatory, Columbia University, Palisades, New York 10964, USA 6 - Research Laboratory, British Museum, London WC1B 3DG, UK Very small samples from the Shroud of Turin have been dated by accelerator mass spectrometry in laboratories at Arizona, Oxford and Zurich.As Controls, three samples whose ages had been determined independently were also dated.Three of the Carbon isotopes (C) are found in nature.The rest of the carbon isotopes are only of laboratory interest.

After many journeys the shroud was finally brought to Turin in 1578 where, in 1694, it was placed in the royal chapel of Turin Cathedral in a specially designed shrine.These factors affect all trees in an area, so examining tree-ring sequences from old wood allows the identification of overlapping sequences.In this way, an uninterrupted sequence of tree rings can be extended far into the past.Radiocarbon dating has transformed our understanding of the past 50,000 years.

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Professor Willard Libby produced the first radiocarbon dates in 1949, and was later awarded the Nobel Prize for his efforts.The first such published sequence, based on bristlecone pine tree rings, was created in the 1960s by Wesley Ferguson.



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