LITHOLOGY OF OLIGOCENE AND EOCENE-PALEOCENE ROCKS IN EASTERN CAUCASUS REGION
The article describes the results of the lithological investigations and laboratory analysis that would be a base for characterization of the rocks in Oligocene and Eocene-Paleocene deposits. These investigations include sample, thin sections description, SEM, XRD analysis and pyrolysis. The results have demonstrated that anisotropy changes strictly confined to the structure and mineral composition variations. A clay component increasing causes prevalence of the elongate pores, and a carbonate component increasing causes prevalence of the isometric mesh-shape pores as well as the rock susceptibility to fracturing.