• 14C Dating of Laser-Oxidized Organics

      Watchman, A. L.; Lessard, R. A.; Jull, A. J. T.; Toolin, L. J.; Blake, Weston (Department of Geosciences, The University of Arizona, 1993-01-01)
      We used a continuous krypton ion laser to rapidly oxidize milligram-sized fragments of coniferous driftwood of known ages, and dated the resulting carbon dioxide by accelerator mass spectrometry (AMS). AMS 14C ages of non-pretreated young wood from different parts of two logs were within 10% of the ages of conventionally determined alkaline insoluble fractions. The age of the oldest whole wood measured after laser oxidation was within the error ranges of conventional values.