Some aspects of the problem of sulphurous oil shales
In this article we considered the regularities of sulfur distribution in oil shale; the geological conditions which led to high overall sulfur content of oil shale; the direction of sulfurous shale use; the sulfur resources of oil shale. The possible reasons of sulfur high concentration in province oil shale may be the following: its in vivo (constitutional) accumulation by organ-isms-shaleformers, and secondary origin as a result of sulfates reduction by sulfate-reducing bacteria in anaerobic conditions. The great bulk of the sulfur compounds forms during the geological history of the layer. The main geological prerequisites that caused the high overall sulfur content of oil shale are the following: high biological productivity basin sedimentation, sulfate paleostructure of marine waters during the Volga Century and favorable physical and chemical environmental conditions of organic matter fossilization.