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Growing emissions from the burning of fossil fuels are threatening the effectiveness of radiocarbon dating, according to new research. The dating method has been used for decades to accurately determine the age of a wide range of artefacts. But using fossil fuels pumps a type of carbon into the atmosphere that confuses the dating technique. Scientists say that bynew clothes could have the same radiocarbon date as items 1, years old. Developed in the late s, the method measures carbon, a radioactive form of the element.

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When radiocarbon dating is applied to young sample materials, the are subject to the Suess effect 1 : that is, the concentration of atmospheric 14 C has been diluted by carbon dioxide containing negligible 14 C from the burning of fossil fuels since the onset of the industrial revolution. As this carbon dioxide is incorporated into growing plants in the normal manner, radiocarbon dating of young plant material tends to produce spuriously old dates.

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The age discrepancy could, in theory, be as much as yr ref. However, during a study into the age, origin and vegetational history of upland blanket peats in South Wales, substantially older dates were obtained from recent horizons.

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The dating of different peat fractions by radiocarbon assay suggested that the substantially older dates derived from contamination by participate pollution during the industrial revolution. The scale and impact of this pollution are discussed in the context of these. Enable full. Citations 3.

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References 2. Similar Papers. Volume Content.

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Export Citation. Radiocarbon dating evidence on the impact of atmospheric pollution on upland peats Chambers, F. Abstract When radiocarbon dating is applied to young sample materials, the are subject to the Suess effect 1 : that is, the concentration of atmospheric 14 C has been diluted by carbon dioxide containing negligible 14 C from the burning of fossil fuels since the onset of the industrial revolution.

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Seventy years ago, American chemist Willard Libby devised an ingenious method for dating organic materials.
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