FACTORS DETERMINING THE SALT DIAPIRISM IN DNIEPER-DONETS DEPRESSION

Abstract

Salt diapirism is described as a solid flow of salts with regard to fluid-dynamic concepts. High plasticity and low density of salts are the cause of convective instability of the sedimentary strata, which leads to the formation of specific salt structures. Specificity is expressed in the spatial periodicity of the placement of salt structures either in the linear forms or of hexagons (single domes), depending on the critical values of the Rayleigh number. The influence of geotectonic and gravitational factors, the effect of high-temperature deep fluids is estimated. The flow of salts is influenced by the vibration forces that determine the discrete nature of the sizes of salt structures and the distances between them. Examples of the negative consequences of the anthropogenic factor are given.