Late-glacial to Holocene aeolian deposition in northeastern Europe - The timing of sedimentation at the Iisaku site (NE Estonia)

Dune development in the area was strongly controlled by the formation of the Baltic Ice Lake (BIL) in front of the retreating glacier. Luminescence ages from the aeolian complex suggest continuous deposition between 13.3 ± 1.2 to 10.5 ± 0.7 ka. However, the chronology of sand deposition also suggests phases in this aeolian activity: (1) at 13.3 ± 1.2 ka and onwards, possibly correlated with the existence of an island separating the BIL and Peipsi Lake, (2) between 12.7 ± 0.8 - 12.5 ± 0.8 ka representing the Younger Dryas cold reversal, (3) between 11.5 ± 0.7 - 10.9 ± 0.8 ka indicating that aeolian deposition continued over the Younger Dryas/Holocene boundary, and (4) early Holocene sand-drift at 10.5 ± 0.7 ka.