How long was the Younger Dryas? Preliminary evidence from annually laminated sediments of Soppensee (Switzerland)
How long was the Younger Dryas? Preliminary evidence from annually laminated sediments of Soppensee (Switzerland)
复制标题
新仙女木期持续了多久？
作者：
A. Lotter
尽管对晚冰期陆地植物遗骸进行了广泛的AMS-14 C测年系列，但由于在10000年B. P.出现了一个14 C年龄恒定的时期，因此对新仙女木生物带的持续时间进行精确估计（Ammann & Lotter，1989）受到了阻碍。680-720个纹层，而恒定放射性碳年龄阶段包括270-310个纹层。
AbstractsDespite extensive AMS-14C dating series on Late-glacial terrestrial plant remains, a precise estimate of the duration of the Younger Dryas biozone (sensu Ammann & Lotter, 1989) is hampered by the occurrence of a period of constant 14C-age at 10 000 yr B.P. However, varve counts at Soppensee suggest that the Younger Dryas biozone comprises approx. 680–720 varves, and that the phase of constant radiocarbon age includes between 270–310 varves.