14C activity and global carbon cycle changes over the past 50,000 years.

@article{Hughen200414CAA,
  title={14C activity and global carbon cycle changes over the past 50,000 years.},
  author={Konrad A. Hughen and Sara Lehman and John R. Southon and Jonathan T Overpeck and Olivier Marchal and Chauncey Herring and J Dunkeld Turnbull},
  journal={Science},
  year={2004},
  volume={303 5655},
  pages={
          202-7
        }
}
A series of 14C measurements in Ocean Drilling Program cores from the tropical Cariaco Basin, which have been correlated to the annual-layer counted chronology for the Greenland Ice Sheet Project 2 (GISP2) ice core, provides a high-resolution calibration of the radiocarbon time scale back to 50,000 years before the present. Independent radiometric dating of events correlated to GISP2 suggests that the calibration is accurate. Reconstructed 14C activities varied substantially during the last… CONTINUE READING
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