Data concerning preparation of pollen concentrates and graphite targets and results of dating.

Laboratory processing of concentrates was aimed at the removal of non-sporomorph organic matter by means of chemical treatment, micro-sieving and heavy liquid seperation. The optained concentrates were checked under the microscope and sample purity was estimated on the basis of particle counts. The results of AMS 14C dating show differences in the sedimentation rate among three sites of Lake Baikal.本研究对富集样品开展实验室处理，旨在通过化学处理、微筛筛分及重液分离技术去除其中的非孢粉类有机质。所获富集样品经显微镜镜检，并基于颗粒计数法评估样品纯度。加速器质谱碳十四（¹⁴C）测年结果显示，贝加尔湖三个采样点的沉积速率存在差异。