Stratigraphy of the sediment infill in Bosphorus Strait: water exchange between the Black and Mediterranean Seas during the last glacial Holocene

Citation
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
Citations number
43
Categorie Soggetti
Earth Sciences
Journal title
GEO-MARINE LETTERS
ISSN journal
02760460 → ACNP
Volume
20
Issue
4
Year of publication
2001
Pages
209 - 218
Database
ISI
SICI code
0276-0460(200105)20:4<209:SOTSII>2.0.ZU;2-J
Abstract
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.