The book summarizes results of long-term studies of sulfur geochemistry in bottom sediments of seas and oceans. Processes of hydrogen sulfide formation in bacterial reduction of sulfates, its transformation into transient and stable compounds of reduced sulfur in liquid and solid phases of sediments are under consideration. Regularities of distribution of sulfate and reduced sulfur in ocean sediments are shown. Problems of sulfur budget in the modern oceans are discussed.

Supplement to: Volkov, Igor I (1984): Geokhimiya Sery v Osadkakh Okeana (Geochemistry of Sulfur in Ocean Sediments). Nauka Publ. (Moscow): in Russian, 272 pp