The main features of Early Eocene deposition within north-western Black sea shelf have been determined. In the basin axial zone the carbonate-clayey mud of the external shelf was deposited. On its periphery the biogenic bank-reef buildups and alongshore bars were developed. The main part of the territory was occupied by the inner shelf with carbonate-clayey mud domination in eastern part and terrigenous-clay mud in central and western parts.

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