Geology

Well Logging Zoning of Saratov Region

Authors: Golovin K. B., Golovin B. A., Kalinnikova M. V.

In work for needs of the mine geophysics the outline of the Saratov oblast division into district is offered, it is based on the depths of bedding and litological structure of the basic oil and gas complexes, tectonic division into district of the territory, distribution of the saltmeasures and zones of development of the anomaly press, results of the metering of geophysical parameters in the chinks, stratigraphy layings out, data about the designs of the chinks, bed temperatures and pressure, mineralization of the bed of waters.

Сharacteristics of the Lower Cretaceous Local Stratigraphic Units from the North of the Volgograd Region

Authors: Saltykov V. F., Manikin A. G.

Detailed sampling of the Lower Cretaceous beds from the wells and outcrops in the north of the Volgograd Region has revealed peculiarities in the material composition alterations along the section at the level of local stratigraphic units. Cyclicity in the Cretaceous bed formation has been established. Analyses of the authors’ own and of the earlier published paleontologic data have made it possible to date the beds relative to the general stratigraphic scale. Sedimentation stages in the Early Cretaceous have been considered for the Volga right bank region in the vicinity of Volgograd. 

Preliminary Results of Researches of Estimation of an Opportunity of Quantitative Interpretation of Termokappametric Data

Authors: Pimenov M. V., Manikin A. G., Yampolskaya O. B., Gujikova A. A., Zhukov A. N.

Termokappametric method, that is based on the effect of phase transition of sulfides and carbonates of iron to magnetite at heating up to 500° C in the oxidizing environment, allows to define variations of concentration of pyrite in rocks. It is carried out laboratory and field researches with the purpose of finding-out of an opportunity to receive quantitative, instead of the qualitative with help of the termokappametric method.

To Paleoclimatic Control in Oil and Gas Generation as Related to Estimation of Oil and Gas Content Prospects in the Shelves of Russian Arctic Seas

Authors: Nazarkin L. A.

A direct dependence is established between the scale of accumulation of oil source organic matter and the average annual temperature, illumination and supply of biogenic elements to the photic layer of the water mass in a sedimentation basin. Other conditions being favourable, the oil-generating potentials of sedimentary-rock basins depend upon their paleolatitudinal position during accumulation of oil-source deposits. Oil and gas contents are predicted for the shelf zones of other marginal Arctic seas in Russia.

Main Informative Characters of Facies-Genetic Types of the Late Phanerozoic Sediments from the South-East of the EasternEuropean Platform

Authors: Yanochkina Z. A., Bukina T. P., Akhlestina E. F., Zhidovinov N. Y., Ivanov A. V.

Main informative characters of facies-genetic types of the Late Phanerozoic marine and continental deposits for SE of the EasternEuropean platform are discussed. Their analysis has shown irreversible trends of decreasing of chemogenic formations from the Permian age to Recent as well as increasing of terrigenouscarbonate, sapropel and siliceous-carbonate biogenic sedimentation.

Study of Neotectonic Fissuring in Connection with a Substantiation of Ecological Safety of Sokolovogorsky Burial Ground Disposal of Industrial Drains

Authors: Tokarsky A. O., Tokarsky O. G., Vanshin Y. V.

Passing waters received at improvement of Sokolovogorsky oil and gas field is subject of injection in the Paleozoic carbon-bearing collector. Digital geological model of the burial reservoir has been created to prove size of sanitary protection zones (ZSP) by the collective of NVNIIGG. This allowed carrying out hydrodynamic modeling and defining of parameters of spreading zone. Taking into account anisotropic properties of the reservoir, experts of chair of engineering geology and hydrogeology of the Saratov state university were involved in the project.

The First Evidence of Tactile Sensor Zones among Dicynodonts (Therapsida)

Authors: Surkov M. V.

For the first time evedences of possible tactile sensor zones has been described in representative of non-theriodont clade of therapsids – Myosaurus gracilis (Dicynodontia). The system of foramina and grooves reflecting well developed blood network on the snout of Myosaurus is generally similar to the same descried for theriodonts and possibly represents development of sensor zones. Very large orbits and developed sensor fields on the snout of Myosaurus the most probably indicates the nocturnal mode of life and support previous ideas on omnivorous feeding. 

On Paleopathology of the Upper Cretaceous Plesiosauroid Sauropterygians of the Lower Volga-Region

Authors: Stepanov S. A., Arkhangelsky M. S., Ivanov A. V., Grigoriev M. A.

Plesiosauroid sauropterygian remains with mechanical traumas (predator’s bites) and paleopathological modifications in bone structure were described from the Upper Cretaceous deposits of the Lower Volga region. 

Analysis of the Knowledge of the Callovian Type Sections from the Volga Region

Authors: Saltykov V. F., Seltzer V. B.

Comparison of results obtained by various authors from Callovian beds of the stratotype section in the Malinovyj gully has shown to be incomparable in the amount and quality of biostratigraphic information. Using this information for recognizing of local strata (suites) has reduced the minuteness of deposit division. This makes new comprehensive description of the section essential as well as thorough analyses of the latest results in combination with the earlier data on the updated ammonite standard. 

On Influence of the Earth’s Rotational Regime upon Natural Processes

Authors: Nazarkin L. A.

Dependence of the near-surface air temperature on the Earth's rotational regime is revealed in the Phanerozoic. Epochs of cooling correlate with reduced rates of the Earth's rotation. Macrovariations in rotational regime caused by cosmogenic and endogenic factors, and microvariations, as well as by fluctuations in solar activity and endogenic processes, control the stresses and deformations within the Earth's crust, dynamics and peculiarites of water and air mass circulation, and consequently, the temperature regimes of the latitudinal belts.

Pages