Late Weichselian pollen stratigraphy, clay-varve chronology, radiocarbon chronology, and palaeomagnetic secular variations at Farslycke, Blekinge, southern Sweden

Abstract

Pollen analysis, AMS 14C measurements and varve counting, carried out on a sequence of Late Weichselian lacustrine sediments in Blekinge in southeastern Sweden, show that the area was deglaciated during the middle part of the Bølling, at c. 12,500 14C years BP + c. 200 varve years. This date fits well with the regional deglaciation chronology. The deglaciation was accompanied by a typical late glacial vegetation succession. The varve chronology for the site is correlated to the regional chronology for Blekinge, and the ice recession rate is calculated to c. 100 m/year. The palaeomagnetic secular variation analyses show a characteristic westerly declination swing at c. 11,500-10,300 14C years BP, which is in accordance with curves from other sites in southern Sweden.