Izvestiya of Saratov University.
Earth Sciences
ISSN 1819-7663 (Print)
ISSN 2542-1921 (Online)

Caspian Depression

Structural features of the lower Permian salt-bearing series and the character of salt-tectogenesis manifestations in the Caspian Depression. Paper II

The article presents the analysis of the inner structure of the salt-bearing series within the Caspian Depression. Certain salt-bearing complexes of various ages, compositions and plastic properties are distinguished. Their structural relations and the features of salt-tectogenesis manifestation are evaluated. Up to the present no subsalt uplifts have been confirmed in the Russian sector of the Caspian Depression and no HC fields have been discovered.

Insoluble remains of Lower Permian sylvinite rocks in the western and north-western framing of the Caspian depression

The paper presents the results of a study of the insoluble residue of sylvinites and sylvin-halite rocks of the Lower Permian halogen formation, common within the Perelyubsky areas (Western and Eastern), promising for industrial development (Saratov Region) and the Gremyachinsky potash deposit (Volgograd Region). A technique for studying the insoluble residue of sylvinites is presented. The types of insoluble residue are distinguished according to the form of occurrence in sylvinites and its mineral composition is characterized.