Formation of the New Euxinic basin during Würmian glaciation period
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A mathematical model is applied to study the transformation of the Post-Karangate Sea into a brackish New Euxinic basin during the ‘Würmian’ glaciation period. Halocline destruction and the leveling of salimity of surface and deep waters took place at the beginning of that period. The paper examines the evolution of the salinity field and vertical exchange over a period of ten thousand years, starting from the time of degeneration of the Bosphorus undercurrent. The thermal effect of the New Euxinic basin prevented the progress of the glaciation toward south-eastern Europe. The small organic matter content in the New Euxinic deposits is the result of severe climatic conditions and intensive terrigenous deposition, as well as of the sorption of phosphates by iron and aluminium hydroxides and their subsequent sedimentation.
KeywordsSalinity Gradient Salinity Field Vertical Exchange Organic Matter Production Severe Climatic Condition
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