Abstract

Evolution of N.M. Strakhov’s views on the formation of diagenetic sulfides in Holocene-Quaternary rocks of the Black Sea is considered. It is shown that Strakhov actually discarded the statement of A.D. Arkhangel’skii about the migration of hydrotroilite from the Drevnechernomorsk (i.e., ancient Black Sea sediments) to the Neoeuxinian sequence and attribute the generation of sulfides in the hydrotroilite bed to the redox hydrosulfuric barrier. New data on sulfide distribution in Black Sea sediments and concept of ancient Black Sea sediments as semipermeable membranes suggest the decisive role of hydrosulfuric solutions in the generation of sulfide accumulations.

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