Bobko A. Peculiarities of contemporary bottom sediments lithological composition of flowing surface water reservoirs at mining regions (on the pattern of Kryvbas).

Dissertation to obtain a scientific degree of a candidate of geological sciences in specialty 04.00.21 - lithology. Section of sea geology and sedimentary ore formation of the National Scientific museum of natural history of NAS Ukraine, Kyiv, 2009. The dissertation describes issues of mining operations influence on lithology and geological structure of contemporary bottom sediments of plain rivers. As a representative investigation object of "plane river - open liman" type the Ingulets river, the water course of the Dnipro river and the Dnipro-Bug liman were chosen. A range of lithological characteristics according to which contemporary bottom sediments are clearly differentiated such as granulometric analysis, specific density, specific retention, total content of magnet product, content of water-soluble salts, mineralogy-petrography composition and heavy metal content were determined. At was defined that in the upper and lower river currents lithological characteristics of bottom sediments were quite homogeneous and were substantially different from that of technogenesis zones (located at middle course of the river, the area length is about 20-25 km). At the technogenesis zones river sediments a quires anomalous features that can be explained by technogenic constituents - by presence of slurry particles of ferruginous quartzite's having 0,15-0,074 mm size. It allows to divide the indicated zones into natural-antropogenious, technogenious and technoplagenious ones accordingly. Methods of contemporary bottom sediments sampling were developed. The methods lay the foundation of monitoring lithology of subaqueous sediments geological of antropogenious ecosystems.