Carbon dating doubts
But even he “realized that there probably would be variation”, says Christopher Bronk Ramsey, a geochronologist at the University of Oxford, UK, who led the latest work, published today in Science.
Various geologic, atmospheric and solar processes can influence atmospheric carbon-14 levels.
The British Museum was the only institution to fully and quickly answer my request.” Only then, after the British Museum acceded to the FOI — something it was legally obliged to do — did Casabianca and his teams gain access to hundreds of unpublished pages from the earlier study.
The subsequent examination of the data by the Franco/Italian team found evidence, now published in Oxford University’s , which suggests that the methods employed by the 1988 scientists were flawed.
For many years the raw data used in these tests was never released by the institutions involved, despite multiple requests for them to do so.
Finally, in response to the 2017 FOI, all raw data kept by the British Museum was made accessible to researchers for the first time.
She will lead efforts to combine the Lake Suigetsu measurements with marine and cave records to come up with a new standard for carbon dating.
Three laboratories involving researchers from the University of Arizona, Oxford University, and the Swiss Federal Institute of Technology contributed to the 1988 study, which was carried out under the auspices of the British Museum.
(Stefano Guidi / and Elena Castaldi Viora / Shutterstock.com)A new French-Italian study on the Shroud of Turin throws doubt on what many thought was the definitive dating of the cloth believed by millions to be the burial cloth of Jesus Christ.
In 1988 radiocarbon tests on the Shroud of Turin dated the cloth to between 12.
But that assumes that the amount of carbon-14 in the atmosphere was constant — any variation would speed up or slow down the clock.
The clock was initially calibrated by dating objects of known age such as Egyptian mummies and bread from Pompeii; work that won Willard Libby the 1960 Nobel Prize in Chemistry.