期刊
RADIOCARBON
卷 46, 期 1, 页码 181-187出版社
UNIV ARIZONA DEPT GEOSCIENCES
DOI: 10.1017/S0033822200039503
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This work focuses on the preparation and dating of sporomorph (pollen and spores) concentrates of high purity. Three sediment cores recovered from Lake Baikal within the EU-Project CONTINENT were subjected to palynological analyses and accelerator mass spectrometry (AMS) radiocarbon 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 separation. The obtained concentrates were checked under the microscope and sample purity was estimated on the basis of particle counts. The results of AMS C-14 dating show differences in the sedimentation rate among 3 sites of Lake Baikal.
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