Isotope compositions and mineralogy of carbonates and barites from sediments of the Deryugin Basin (Sea of Okhotsk)

Results of studies of mineralogy, geochemistry, and isotope parameters (d13C, d34S, d180, and 87Sr/86Sr) of carbonates and barites from sediments of the Deryugin Basin in the Sea of Okhotsk are presented. Diagenetic nature of carbonates and barites formed due to prolonged activity of cold seeps acting along a fracture zone and supplying methane- and barium saturated fluids is determined. Any signs for hydrothermal activity were not observed.