Abstract
The features of pollen occurrence in ice–wedge ice such as: size of pollen of tundra plants, incoming pollen into frost cracks together with melt water, dust and partially from host sediment and also clay envelopes around pollen grains caused the pretreatment methods of ice–wedge ice samples. Good preservation of thin-wall pollen grains of Salix and Liliaceae after pretreatment evidenced appropriate pretreatment procedure. There is evident correlation between pollen dates and re-deposited pollen and spores content. However an interpretation of 14C dating of pollen concentrate is required independent time scale such as annual laminas or the AMS dates of macro or microfossils.
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