Reconstructied late glacial shore displacement in Estonia

A shore displacement database of the Baltic Ice Lake (BIL) in Estonia, NW Latvia and NW Russia, including more than 700 sites, was compiled. The data were interpolated to the surfaces using the point kriging approach. The highest shoreline of the Baltic Ice Lake (A1 in Estonia) was formed concurrently with or before the formation of the Pandivere ice marginal zone ca 13,300 cal BP. The age A2 is not ultimately defined (13,000 or 12,700 cal BP). Digital reconstruction of palaeoshorelines shows that during stages A1 and A2 the Baltic Ice Lake extended as far as the basins of lakes Võrtsjärv and Peipsi, which isolated from the Baltic Ice Lake between 12,800-12,300 cal BP. Tentative shore displacement curves at Tallinn and Pärnu isobases were constructed. The low water level prior to the BIL I stage was discarded and the earlier opinin, which ties up the elevation of the sandy flat plain surfaces near Tallinn with the low water level, is questioned.