Description:
<jats:p>We built a floating, 1382-ring pine chronology covering the radiocarbon age interval of 12,000 to 10,650 BP. Based on the strong rise of Δ<jats:sup>14</jats:sup>C at the onset of the Younger Dryas (YD) and wiggle-matching of the decadal-scale Δ<jats:sup>14</jats:sup>C fluctuations, we can anchor the floating chronology to the Cariaco varve chronology. We observe a marine reservoir correction higher than hitherto assumed for the Cariaco site, of up to 650 yr instead of 400 yr, for the full length of the comparison interval. The tree-ring Δ<jats:sup>14</jats:sup>C shows several strong fluctuations of short duration (a few decades) at 13,800; 13,600; and 13,350 cal BP. The amplitude of the strong Δ<jats:sup>14</jats:sup>C rise at the onset of the YD is about 40, whereas in the marine data set the signal appears stronger due to a re-adjustment of the marine mixed-layer Δ<jats:sup>14</jats:sup>C towards the atmospheric level.</jats:p>