Radiocarbon dating sea shells

Radiocarbon dating sea shells

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Credit: JAMES KING-HOLMES/SCIENCE PHOTO LIBRARY

Caption: MODEL RELEASED. A marine shell from Brazil being processed for dating by radiocarbon using an Accelerator Mass Spectrometer (AMS). The information will be used for developing carbon-14 'offset' standards for that part of the South American coast. The values that the research is establishing are necessary because the depth of the sea in some places alters the rate of carbon-14 exchange between the atmosphere and the sea-water and this irregularity needs to be taken into account in some dating calculations. Photographed at the Oxford Radiocarbon Accelerator Unit, University of Oxford, UK.

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Keywords: accelerator mass spectrometry, age, ams, analysis, brazil, c14, carbon, carbon dating, carbon dioxide, carbon-14, carbon-14 dating, chemistry, date, dating, environment, environmental, flow, isotope, marine, ocean, offset, organic, oxford, radiocarbon, shell

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