Palaeoreconstruction of the Baltic Ice Lake in the Eastern Baltic - The Baltic Sea Basin - page 196

Fig. 9.5 BIL 12,000 cal. years BP, stage BII. Isobases show the reconstructed water level above
present sea level in metres. Black dots show the location of used shoreline sites

9.3.5 BIL 11,600 cal. years (BP/BIII)

During the ice margin standstill at the Salpausselkä II about 11,770-11,590 cal.
years BP (Saarnisto and Saarinen 2001 ) , a well-developed BIL coastline BIII was
formed. BIII waters covered southern Finland, western and northern Estonia and
coastal areas of Latvia and NW Russia (Fig. 9.6 ) . The water level was up to 150 m
a.s.l. in Finland, but below present sea level south from Latvia. The BIL water level
at Lake Peipsi threshold was 26 1 m a.s.l., which is at least 1-3 m below the mini-

mum threshold altitude (limestone surface). The water body in the Lake Peipsi basin
was slightly larger than shown in Fig. 9.6 because its threshold was higher than BIII
water level in the Baltic Sea basin. The southern part of Lake Peipsi was dry. Lake
Võrtsjärv was most likely dry or had very shallow water body only in the north-
ern part. Lake Ladoga in NW Russia was connected with BIL; however, the strait
in Neva valley was further narrowed and a main connection existed over Karelian
Isthmus (Fig. 9.6 ) .

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