Pollen-stratigraphic position of the last Baltic Ice Lake drainage

Sammanfattning: High-resolution analyses of sediments from two sites in Blekinge, south-eastern Sweden (the former Lake Togölen and Lake Bredsjön), were evaluated in order to establish the pollenstratigraphical position of the second and final drainage of the Baltic Ice Lake in relation to the Younger Dryas-Preboreal pollen zone transition. Remanent magnetisation and magnetic susceptibility were used to correlate between parallel cores and to evaluate the amount of inorganic allochthonous material. Total carbon content was analysed to determine the isolation. Detailed pollen made it possible to correlate the local pollen assemblage zones to the regional pollen assemblage zones in Blekinge. Macrofossils analyses helped to assess the surrounding vegetation during, before and after the last Baltic Ice Lake drainage. The second drainage of the Baltic Ice Lake seems to have occurred immediately before the Younger Dryas-Preboreal transition zone and as one single event.