Stella S. Peculiarities of lithogenesis of saliferous formations and problems of their usage

The thesis is dedicated to developing the concept of saliferous formations lithogenesis based on determination of stadial transformations at different levels of substance organization (formation, bed, layer, rock, mineral, submineral) and the approaches to solving problems of saliferous formations involving in economic activity were argumented. As a result of research and analysis of the conditions for rock salt formation and identifying of key factors and processes peculiar for different stages of saliferous formations lithogenesis on subformational, formational levels there was developed the lithogenetic classification of the rock salt. There were highlighted and described five main lithogenetic types: diagenetic, catagenetic, halotectokinetic, contact-metasomatic, metagenetic. There were defined and characterized primary and secondary processes and factors of lithogenesis, which are typical for different stages of saliferous formations lithogenesis. For the development of modern ideas of lithogenesis theory in saliferous formations lithogenesis are distinguished: the regional background immersion lithogenesis with the stages of dia-, cata-, and halotectokinesis; the regional imposed activation lithogenesis (dynamo and/or thermal) (stage of regression lithogenesis and hypergenesis); the local imposed lithogenesis (hydrothermal, hydrothermal-metasomatic, contact-metasomatic). Lithogenetic types of rock salt are characterized by their physical-mechanical and other functional properties, which is a theoretical basis for selecting of perspective areas, structures and sites for geological and geochemical investigation that accompany exploration and underground construction in salt strata.