title: [Radiocarbon dating of pollen and spores in wedge ice from Iamal and Kolyma].
abstract: Radiocarbon dating of pollen concentrate from late Pleistocene syngenetic wedge ice was carried out using acceleration mass spectrometry (AMS) in Seyakha and Bizon sections. Comparison of the obtained dating with palynological analysis and AMS radiocarbon dating previously obtained for other organic fractions of the same samples allowed us to evaluate accuracy of dating of different fractions. Quantitative tests for data evaluation were considered in terms of possible autochthonous or allochthonous accumulation of the material on the basis of pre-Pleistocene pollen content in these samples. Paleoecological information content of pollen spectra from late Pleistocene syngenetic wedge ice was evaluated.
authors.affiliation: Geological Faculty, Moscow State University, Vorob'evy gory, Moscow, 119992 Russia. vasilch@orc.ru
authors.forename: A K
authors.initials: AK
authors.lastname: Vasil'chuk
mesh_terms: D002250:Carbon Radioisotopes / Q000032:analysis*; D007053:Ice; D013058:Mass Spectrometry / Q000379:methods; D010944:Plants; D011058:Pollen; D012800:Siberia; D013170:Spores; D013997:Time Factors
chemical_list: D002250:Carbon Radioisotopes; D007053:Ice