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METHANE AND HYDROGEN SULFIDE PELOIDS ARE IN BIG LAKE TAMBUKAN
Abstract
The regularities of distribution of methane and sulfide sulfur (total sulfide пїЅ ?H2S) in the bottom sediment deposits of therapeutic sulfide mud Lake Bolshoy (Big) Tambukan, located in the region of Caucasian Mineral Waters. Determination of methane and sulfide sulfur were produced in black and dark grey therapeutic mud, as well as in the underlying steel-grey clays and coastal sediments, represented by yellow-brown clay and loam. The formation of therapeutic sulfide mud flows through the biogeochemical environment with extremely low values of redox potential and alkaline conditions of pH, characteristic of marine waters. A clear decrease in the content of total sulfide and increasing values of the redox potential in the series: black mud ? dark gray mud ? steel-grey and yellow-brown clays and loams. In the same direction, a decrease in the content of organic substance, the number of sulfate-reducing and putrefactive bacteria. Suggested that both of these types of bacteria may be responsible for the formation of elevated concentrations of sulphides. The methane concentration on a vertical precipitation changes are not as clearly. The sharp decrease in concentrations, like methane and total hydrogen sulfide occur in the transition from bottom sediments to the underlying native sediments of the bed of the lake. It is shown that the ratio of the concentrations of methane and total hydrogen sulfide may be an important indicator characterizing the biogeochemical conditions and processes in therapeutic mud.
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