Atmospheric radiocarbon calibration to 45,000 yr BP: Late glacial fluctuations and cosmogenic isotope production

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Abstract

More than 250 carbon-14 accelerator mass spectrometry dates of terrestrial macrofossils from annually laminated sediments from Lake Suigetsu (Japan) provide a first atmospheric calibration for almost the total range of the radiocarbon method (45,000 years before the present), The results confirm the (recently revised) floating German pine chronology and are consistent with data from European and marine varved sediments, and combined uranium-thorium and carbon-14 dating of corals up to the Last Glacial Maximum, The data during the Glacial show large fluctuations in the atmospheric carbon-14 content, related to changes in global environment and in cosmogenic isotope production.

Original languageEnglish
Pages (from-to)1187-1190
Number of pages4
JournalScience
Volume279
Issue number5354
DOIs
Publication statusPublished - 20-Feb-1998

Keywords

  • ENHANCED BE-10 DEPOSITION
  • NORTH-ATLANTIC
  • MELTWATER DISCHARGE
  • YOUNGER DRYAS
  • CO2 RECORD
  • C-14
  • CIRCULATION
  • CORALS
  • SEDIMENTS
  • LAKE

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