Geology

Hydrogeodynamic Conditions of the Basic Oil-gas-waterbearing Complexes of the Volga-Ural Province

Authors: Loginova M. P., Mavrin K. A.

Leaded researches showed, what hydrogeodynamic conditions of basic oil-gas-water-bearing complexes of Volga-Ural province are favorable for preservation of deposits of hydrocarbons. 

Compaarative Analysis of the Thinly Dispersed Components of the Triassic and Jurassic Sediments from the Caspian Region Aimed at Revelation of the Paleogeografic Settings

Authors: Bukina T. P., Yanochkina Z. A.

Indicators of sedimentogenesis have been established for paleogeographic reconstructions based on ecosystem-nanostructural analysis of finely dispersed sediments. The Early Triassic Olenekian sediments have disclosed some features of primary food chains peculiar for marine basins within the landscapes previously regarded as continental ones. Those have been classified as plains periodically flooded by sea. The coccolith- and ostracod-bearing sediments from epicontinental basins have been recorded in the Middle Triassic sections.

Geological-tectonic interpretation of gravity-magnetic information in development of regional geophysical profiles (for example: the profile «Uvarovo – Svobodniy»)

Authors: Ryskin M. I., Volkova E. N., Sokulina K. B.

The article deals with the results of geological interpretation of geophysical data received during traversing («Uvarovo – Svobodny» line, the length is 376 km). Integrated gravitomagnetic installations alongside were applied during the process of interpretation. The new tectonic elements were found, and previously found tectonic elements were confirmed. More accurate information about location of the border separating the mentioned tectonic elements was obtained. 

Kinematics of the Electromagnetic Waves from the Second-type Seismoelectric Effect in Two-layered Earth

Authors: Moskovskiy I. G., Moskovsky G. A.

Analysis of the traveltime curves of the principal types of the electromagnetic waves from the second-type seismoelectric effect was used to demonstrate the possibility of using the kinematic characteristics of that effect fields for studying aquifer locations. 

Mineralogical and Paleogeothermal Criteria for Predicting Oil and Gas Contents from the Rift Sedimentary Basins

Authors: Korobov A. D., Korobova L. A., Akhlestina E. F.

Clay minerals and their parageneses make sensitive indicators of diverse processes involved in transformation of the Valanginian terrigenous rocks in the North Khalmerpayutinskaya field by hot solutions. The latter ones used to form hydrothermal-metasomatic reservoirs and to transport HC. The amounts of mixed-layer bodies and the proportions of swelling (smectite) and non-swelling (chlorite, micaceous) constituent packages make it possible to estimate the trap quality and the probability of HC presence.

Local Stratigraphic Units of the Middle Carboniferous Moscovian Stage from the Volgograd-Saratov Volga Region

Authors: Saltykov V. F.

Analysis of the published factual materials from the Lower Volga region has made it possible to distinguish and to describe eight local stratigraphic units of the Middle Carboniferous Moscovian stage. Lithologic and paleontologic characteristics of the suites and the subsuites are presented alongside with indications of the stratotype sections in particular wells. In the summary, the local stratigraphic units from the Lower Volga Region are compared with the stratotypes from the Moscow Region. 

About Possible Reflexion of Paleocological Conditions in Petromagnesism of Kallovian - Oxfordian Deposits of Dubki Section (Saratov)

Authors: Pimenov M. V., Glinskih L. A., Guzhikov A. Y., Mihailov A. M., Rogov M. A., Tesakova E. M.

As a result of the complex analysis of petromagnetic, micro- and macrofaunistic data of deposits on the Kallovian – Oxfordian boundary of Dubki section (Saratov), which is one of candidates for a role of a Global Boundary Stratotype Section and Point of Oxfordian boundary (GSSP), it is established significant correlation between magnetic susceptibility variations and changes of an abundance, a specific variety of ostracodes, foraminiferes and ammonites.

Aspects of Modern Higher Education

Authors: Pervushov E. M., Volkova E. N., Ermokhina L. I.

High school and specifically – professional geological education go through the period of essential structural and profound reformation. The modern state of components of higher professional education has been considered. The ideas about disappearing components of this system and probably the fact that can change them have been stated. 

Unique Steppe Natural Complexes of the Left Bank Volga River in Saratov Region

Authors: Makarov V. Z., Volkov Y. V., Bulanyj Y. I., Prokazov M. Y., Mukalo A. S.

According to field researches of the Left bank Volga river in Saratov region in article are shortly presented descriptions of two steppe sites which are unique for this strongly agriculturally transformed territory. The inference are made about necessity of special researches around there, because it is the most perspective for search steppe protected areas. 

Stratigraphy of the Baojcian-Bathonian Marine Deposites of the Volga Region

Authors: Saltykov V. F., Startseva G. N., Troitskaya E. A.

There are unceptainties in the boundaries, extensions and ages of the suites recognized in the recent regional stratigra-phic chart for the Middle Jurassic of the Saratov and Volgograd Volga right-bank Regions. Analyses of the new factual materials acquired from numerous well cores and the data from the outcrops in the stratotype locality at the North Vol-gograg Region make the basis for elaborating the deposite division. Detaled lithologic and paleontologic characteristics, their thicknesses and areals are estimated over Volga right-bank Region. 

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