O. Algan et al., Stratigraphy of the sediment infill in Bosphorus Strait: water exchange between the Black and Mediterranean Seas during the last glacial Holocene, GEO-MAR LET, 20(4), 2001, pp. 209-218
The sediment infill over the Paleozoic bedrock in the Bosphorus Strait cons
ists of four sedimentary units which were deposited in the last 26,000 C-14
years B.P. The stratigraphy of these units suggests that this Dart of the
Bosphorus was a freshwater lake between 26,000 and 5,300 C-14 years B.P., d
epositing sands with a freshwater mollusc fauna of Black Sea neo-euxinian a
ffinity (Dreissena rostriformis, Dreissena polymorpha, and Monodaena pontic
a). The first appearance of euryhaline Mediterranean molluscs (e.g., Ostrea
edulis, Mytilus edulis) was observed at 5,300 C-14 years B.P. in this part
of the Bosphorus. Deposition of coarse Mytilus-bank and Ostrea-bank units
suggests that the establishment of the present dual-flow regime in the Bosp
horus took place at about 4,400 C-14 years B.P.