Model of palaeoenvironmental evolution of the Black Sea region during the last glacial maximum—Holocene |
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| Authors: | I Genov |
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| Institution: | (1) Natural Sciences Research Center, Yıldız Technical University, Beşiktaş, 34349 İstanbul, Turkey;(2) Present address: Department of Earth Systems Analysis, International Institute for Geo-information Science and Earth Observation (ITC), P.O. Box 6, 7500 AA Enschede, The Netherlands;(3) Department of Geophysical Engineering, İstanbul University, Avcılar, 34850 İstanbul, Turkey;(4) Department of Geological Engineering, Ankara University, Tandoğan, 06100 Ankara, Turkey;(5) Present address: Geological Research Center for Fluvial, Lacustrine and Marine Environments (AGDEJAM), Ankara University, 06100 Ankara, Turkey;(6) Department of Geodesy and Photogrammetric Engineering, Yıldız Technical University, Davutpaşa, 34210 İstanbul, Turkey;(7) Department of Geophysical Engineering, Institute of Science, İstanbul University, Beyazit, 34452 İstanbul, Turkey;(8) Department of Geology, İstanbul University, Avcılar, 34850 İstanbul, Turkey |
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| Abstract: | A model for the palaeoenvironmental evolution of the Black Sea and its adjacent basins during the past 20.000 years, in which
variations in sedimentation, erosion, and hydrologic processes as a result of climatic change are taken into consideration,
is developed. The data used include those from five cruises in the Black Sea with the participation of the author, seismo-acoustic
data in the possession of the Institute of Oceanology in Varna, and data from the published literature. The most important
result is that the water level of the Black Sea is controlled largely by that of the Marmara Sea via the Bosporus sill. The
water circulation in the south part of the Bosporus channel as natural regulative mechanism of the Black Sea level during
11800–9000 yr C14 BP is produced. A succession of climatic and water conditions for the Black Sea by pollen analysis is presented. The linear
ridges on the Black Sea shelf as result of the lower Holocene regression are proved by means of a stratigraphic interpretation
of the seismo-acoustic profiles. The levels of the Black Sea, Marmara Sea, and Mediterranean at regarded intervals of time
are presented. An attempt at explanation of maximum number of facts from the study region with this model is made. |
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