TURGOYAK LAKE SEDIMENTS: COMPOSITION AND FORMATION

The magnetic-mineralogical and geochemical studies, calculations of ignition losses, weathering indices, bottom sediment samples were carried out to detect climatic changes in the process of work. The processing and interpretation of the obtained data and apriori geological materials are performed. On the basis of the conducted research, zones of drying and moistening were revealed. The bottom sediments of Lake Turgoyak (Chelyabinsk region) were selected as the object of research. The goal of the final qualifying work is: to study deposits of Lake Turgoyak using: magnetic-mineralogical analysis (measurement of magnetic susceptibility, natural residual magnetization, coercive spectrometry, differential thermomagnetic analysis), high-precision microscopy of the magnetic fraction of sediment using transmission electron microscopy (TEM) and scanning electron microscopy (SEM), determining the elemental and mineralogical composition, calculating the loss on ignition and. Finding levels of moisture and drying of the climate based on the results. Conducting the interpretation of these levels as analog sources of organic matter for the formation of hydrocarbons. As a result of the research, features of sediment accumulation processes of Lake Turgoyak were revealed.