Geochemical peculiarities of bottom sediments in polytypic lakes of Ukrainian Polissya

Abstract

The basic chemical components o f bottom sediments in polytypic lakes are analyzed in this article. In the study of bottom sediments much attention is paid to the chemical composition of their ashes. The examination of sedimentation in the lakes of Ukrainian Polissya is important for sorting the base o f geochemical information about the types of the lake sediments, the conditions o f their creation, geochemistry o f definite elements as indexes of the process, and environment of sedimentogenesis and early diagenesis. Despite the resemblance of some natural conditions, different types of lake sedimentation are determined in the range of the landscape-limnological area. Different landscape conditions meet their own rows of chemical elements. Lake sediments are typical geochemical environments of fresh water accumulation of sediments. Combinations of microelements create a definite individuality of every type of sediment. Indexes of components content gives the opportunity to follow horizontal and vertical changes in the structure of lake sediments, to work out the conditions and process o f forming sediment and lake development in detail to apprise sapropel and other minerals, and to determine the ways of their economic use.