Biostratigraphy and radiocarbon data of Upper Quaternary sediments from western part of Black Sea

The results of the stratigraphical and pollen-analylical investigation of shelf and deep sea sediments from the Bulgarian sector of the Black Sea are presented. The sediments referred to the complex pollen zone I belong to the New Euxinian Regional Stage (upper substage). They were deposited during a regression of the sea under the conditions of dry and cold climate typical of the Black Sea region during Lateglacial time. The sediments referred to the complex pollen zone II belong to the Holocene or Chernomorian Regional Stage. The age of the sediments was confirmed by several radiocarbon dates which fit the biostratigraphic evidence.