Geology

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Carnallite-halite Rocks and Halite of Gremyachinskoye Field’ Halogenous Formations and Their Role in Productive of Sylvinite Horizon Foundation

Authors: Moskovsky G. A., Svidzinskiy S. A., Goncharenko O. P.

Carnallite-halite rocks are the elements of halogenesis’ final stage. Carnallite setting have to follow after sylvinite setting. At the real cut (Gremyachinskoye field also) such succession is disturbed and foundations of those formations proceed of potassium accumulation. Structure of those rocks reflects the receipt in basin with evaporated brine of slightly evaporated solution. NaCl and sometimes KCl are salting out and formed ground halite and rare sylvinite- carnallite rocks.

Laws of Placement a Fields of Building Rock in Territory of the Saratov Right Bank

Authors: Martynova E. G., Staroverov V. N., Hohlov A. E.

The carried out analysis of a location of fields of a building rock on the Saratov right bank allows to reveal laws of placement of a mineral and factors of its forming that will help by finding and exploring of building raw material

Parageneses and Formation Histories of Clayey and Titanian Minerals from the West Siberian Terrigenous Reservoirs – the Basis for Predicting Oil and Gas Accumulation Zones

Authors: Korobov A. D., Korobova L. A., Kolotukhin A. T., Mukhin V. M., Eleseeva L. V.

Detailed lithologic and geochemical investigations were used to show that the presence of hydrothermal coarsely lamellar, structurally perfect triclinic kaolinite (to a lesser extent, dickite) in association with regeneration and microdrusy quartz in terrigenous rocks is indicative of the weakly pulsating stress regime contributory to oil saturation in the mantle secondary reservoirs.

The Echinoids Cyclaster and Galerites from the Maastrichtian Deposits of Volga Region

Authors: Kalyakin E. A.

A first for the Volga region described two new species of echinoids and shows their stratigraphic position. Analyzed the relationship identified Maastrichtian sea urchins of the region coupled with synchronous complexes conjugate paleobiochores

Depositional Environment in Bobrikovsky Time within the South-east of the Russian Plate

Authors: Astarkin S. V., Goncharenko O. P., Pimenov M. V.

The main results of lithology and facies investigations of the Bobrikovskian reservoir rocks material are based on processing drilling in recent years. The analysis of the existing ideas about the conditions of formation of the Lower Carboniferous terrigenous beds. It has been established that formation of terrigenous rocks in Bobrikovsky time had occurred in marine environment

The Results of Geoecological Research of Oktyabrskiy Settlement Soil Cover (Dergachevskiy District Saratov Region)

Authors: Reshetnikov M. V., Utiuliev A. K., Paltsev I. S.

The results of soil cover research of Oktyabrskiy settlement (Dergachevskiy district, Saratov region) are presented. The magnetic susceptibility value and zinc concentration in research area soil are measured. Content of soil cower transformation by analyzed components is estimated. Also authors drew conclusions about the general geoecological soil condition

Forecast of Oil and Gas Deposits of Paleozoic Southwestern Buzuluk Basin

Described the geological structure of the south-western part of the basin Buzuluk. Here the thickness of the Paleozoic sediments has a similar structure to the north and south of the basin Buzuluk, where sediments of the Lower Carboniferous and Devonian numerous open gas deposits. The morphological, geophysical, geological, physical, and thermobaric lithological characteristics of the section. The description of the structure to which the deposits are associated with hydrocarbons. The methods of prospecting similar structures within the area under consideration

Colonial Level of Modular Organization in the Late Cretaceous Hexactinellids (Porifera). Primary Colonies

Authors: Pervushov E. M.

In the structure of modular organization of the Late Cretaceous hexactinellid sponges, the terminal position is assigned to colonial forms, with skeletons peculiar for complex, intricate structures. Primitive (primary) and genuine (secondary) colonies have been revealed. Skeletons of the primary forms, generally with multiple numbers of equivalent modules and oscula, differ morphologically from the genuine colonies in undeveloped module connecting elements, such as junctions and wall closures, and in the lack of ostia

 

Trends of Hydrocarbon Exploration in the Devonian-Lower Carboniferous Beds of the Stepnovskij Composite Swell

Authors: Oreshkin I. V., Oreshkin A. I.

Arguments are provided to substantiate relationship between the beds from the Devonian-Lower Carboniferous and the Visean petroleum complexes in the Stepnovskij swell and the wash-out zone (from the Timanskian to the Vorobyevskian beds) of the underlying Eifelian-Lower Frasnian complex. The data on the compositions of oils and free gases is used to show the presence of a lateral migration flow from the Pricaspian Depression to the southern and the southwestern areas of the Volga-Ural petroleum province.

Brine Contribution to Hydrothermal Albitization Concomitant to Productive Reservoir Formation within the Cover (West Siberia)

Authors: Korobov A. D., Korobova L. A., Kolotukhin A. T., Mukhin V. M., Gordina R. I.

Corrosion and regeneration types of plagioclase albitization have been determined in a terrigenous complex of productive reservoirs within the cover; this reflects two settings of tectonic-hydrothermal activation in a riftogenic sedimentary basin. Under the pulsating stress conditions (geodynamic anomalies), all plagioclases experience corrosion and, consequently, deanorthitization, with formation of authigenic albite foraminated crystals.

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