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2012•Tectonics and StratigraphyOpen access

LOWER-MIDDLE HOLOCENE DIATOM ASSEMBLAGES OF THE TENDROVSKO-KARKINITSKA PART OF THE BLACK SEA AND THEIR STRATUM VALUE

Yu.A. Tymchenko

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Abstract

Lower-Middle Holocene diatom assemblages of the Tendrovsko-Karkinitska part of the Black Sea shelf were discovered. Successive changes of diatom taxonomic structure and abundance were the result of the Holocene environmental transformation. In that time original assemblages with 85-95% Campylodiscus spp. appeared near Dzharylgach island. The oceanic littoral specie Terpsinoл americana was found firstly in the Black Sea Lower- Middle Holocene sediments. It is the stratigraphical marker of synchronous Atlantic diatom microflora of the Baltic Sea.

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Lower-Middle Holocene diatom assemblages of the Tendrovsko-Karkinitska part of the Black Sea shelf were discovered. Successive changes of diatom taxonomic structure and abundance were the result of the Holocene environmental transformation. In that time original assemblages with 85-95% Campylodiscus spp. appeared near Dzharylgach island. The oceanic littoral specie Terpsinoл americana was found firstly in the Black Sea Lower- Middle Holocene sediments. It is the stratigraphical marker of synchronous Atlantic diatom microflora of the Baltic Sea.

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Available abstract

Lower-Middle Holocene diatom assemblages of the Tendrovsko-Karkinitska part of the Black Sea shelf were discovered. Successive changes of diatom taxonomic structure and abundance were the result of the Holocene environmental transformation. In that time original assemblages with 85-95% Campylodiscus spp. appeared near Dzharylgach island. The oceanic littoral specie Terpsinoл americana was found firstly in the Black Sea Lower- Middle Holocene sediments. It is the stratigraphical marker of synchronous Atlantic diatom microflora of the Baltic Sea.

Key concepts: Holocene, Diatom, Stratum, Littoral zone, Black sea, Oceanography, Geology, Relative species abundance

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