Atmospheric Radiocarbon Calibration to 45,000 yr B.P.: Late Glacial Fluctuations and Cosmogenic Isotope Production

• DOI: 10.1126/science.279.5354.1187
• Publication Date: 2002-07-27T09:42:47Z
• Authors: H. Kitagawa; J. van der Plicht
• Keywords: Varve; Macrofossil; Radiometric dating; Cosmogenic nuclide; Accelerator mass spectrometry

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