Source: https://www.geo.sgu.ru/en/articles/list?page=3
Timestamp: 2019-04-25 01:46:34+00:00

Document:
Authors: Eremin V. N., Reshetnikov M. V., Grebenuk L. V., Sokolov E. S.
Researches of snow cover in the city of Saratov. The chemical composition of the melt water and the insoluble residue. Based on the data conclusions about the ecological state of the snow cover.
Authors: Kurazhkovskii A. Y., Kurazhkovskaya N. A., Bagaeva M. I., Gujikova A. A.
By the results of exploration of Titonian – Berriassian sections of Mountain Crimea and Campanian – Maastrichtian sections of west of the Middle Asia, Volga region and Crimea it became possible to reconstruct the special aspects of the geomagnetic field paleointensity changes. There were received the average scale of variations, that rise at the end of geological periods. It should be noted that at the end of Jurassic the average amplitude of geomagnetic field variations was lower than at the end of Cretaceous.
Hexactinellids comprise diverse types of sponges viewed as solitary ones. They used to constitute the basis of sponge communities in the Middle-Late Jurassic and Middle Cretaceous of the European region. The morphological diversity of unitary forms is determined by the skeletal structure with combination of a goblet, a shaft, a false shaft and a system of rhizoids. The goblet wall is peculiar for the highest morphological flexibility, which contributes to substantial habitus changes of the skeleton original morphotypes.
Authors: Samoilov A. G., Zozyrev N. Y.
Khvalynsk district of Saratov region has unique balneotherapeutic characteristics that led to development of a climate resort network, including alpine skiing resort. However, the resort health effect can be enhanced by the use of local mineral resources: medicinal ground waters and clays.
Authors: Sheshnev A. S., Reshetnikov M. V.
Investigations of the physical parameters (magnetic susceptibility, thermal-magnetic effect) and soil texture and soil in the area of the landfill waste disposal. Performed a preliminary assessment of technogenic pollution of soils and soil heavy metals and petroleum products.
The paper deals with the results of complex lithology-facies examination of the UV1 1 layer within the Middle Ob group of fields. It is found that in the area under investigation, the layer was formed in the littoral-marine and shallow-water marine conditions under the effect of waves and currents. A paleogeographic chart has been constructed for the period of the UV1 1 layer generation in the Vasyuganian formation; forecast has been made as to the development of improved reservoir rocks.
Authors: Guzhikov A. Y., Pronin A. P.
In connection with Carboniferous, Permian and Triassic rocks, marked by magnetic susceptibility of thousand and dozens of thousands (10-5 SI units) that are located in southern part of Precaspian Depression, samples of these rocks were studied in details, using strongly magnetic samples. The possible effects of anomalous magnetic field were counted on the base of received data.
Authors: Korobov A. D., Korobova L. A., Akhlestina E. F., Kolotukhin A. T., Mukhin V. M.
The linear trend of secondary dolomitization development within the Tevlinsko-Russkinskoye field has been found to traverse the tectonically contrasting, closely adjacent and hydrodynamically interconnected compression-tension zones. This provides rationale for origination of a natural tectonic pump in the field.
The studies to determine the concentration of mobile and total forms of heavy metals. Assessed by an excess of total and mobile forms of heavy metals in the soil cover over the set of MPC and evaluated geochemical transformation of soils by analyzing their total fertility heavy metal pollution.
Authors: Svidzinskiy S. A., Baranovskaya M. A.
Provides rhythmostratigraphic characteristic of Lower Permian halogen formations of Western monoclinal part of the North-Caspian halmeic basin. Paleogeographic conditions of accumulation of potassium and magnesium and magnesium deposits in the Volga Monocline and the southern deadlock part that holds Gremyachinskoe deposit and related search sites: Darganovskiy and Ravninniy are considered.
It was established that with convective heat and mass transfer in the region of the Krasnoleninskij swell (West Siberia), the pulsating lateral pressure regime used to contribute to interlayer water avalanche liberation from the Upper Jurassic-Lower Cretaceous smectites in the process of their hydromicatization. The resurgent (petrogenic) water constituted the basis of the hydrothermal solutions responsible for the processes of ultra-acid leaching, metasomatosis, hydrocarbon generation and migration.
Authors: Kravchenko T. I., Filatov V. V.
The article is devoted to the plane problem of appraisal critical effort, appearing in a flaky- horizontals model of a weak grunt environment under the influence of loading, the kind of which has a form of an symmetrical triangular and semi-infinite combined load.
Authors: Moskovsky G. A., Goncharenko O. P., Svidzinskiy S. A., Radzievskaya O. A.
The paper deals with the role of the factors that determine the texturalstructural peculiarities of potassium, potassium-magnesium and magnesium salts in the Caspian halogenic basin. Special reference is made to the role of highly concentrated brine preservation in certain basin water areas, importance of constant inflow of low condensed brine, salting-out of sodium and potassium chlorides, basin bottom morphology, the influence of two types of sedimentation rhythmicity (halogenic and terrigenous) and secondary processes of mineral formation.
Authors: Richter Y. A., Pronin A. P.
The problem of Paleozoic volcanism in the southeastern Precaspian depression remains unsolved despite its relevance. Obtained by the authors results can be most adequately explained from the plate tectonics standpoint as the evidence of subduction and subsequent collision that created the Precaspian Basin southeastern framing.
Authors: Gujikova A. A., Tselmovich V. A., Atkin V. S.
The level with anomalous high values of natural remanent magnetization and Koenigsberger ratios was identify in the Upper Maastrichtian of Vol’sk depression (Saratov Volga Region). The microprobe studies of samples from this layer registered elevated concentrations of microparticles of iron, nickel, intermetallics and magnetite spherules of cosmic genesis. Similar petromagnetic anomaly was detect in the uppermost of Maastrichtian in the South Cis-Caspian (Aktolagay Plateau, Kazakhstan).
Authors: Minikh A. V., Minikh M. G.
The paper presents the first review of the Permian and Triassic fish holotypes belonging to two classes (Sarcopterygii and Chondrich Chondrichthyes), recognized by the authors upon collecting and examining ichthyofauna bone remains from the sections within the East European Platform and the adjacent regions. Starting from the 1960-ties, 3 genera and 26 species of those fishes have been defined and used alongside with actinopterygian fishes to compile stratigraphic charts of the Permian and Triassic from European Russia and to make paleogeographic reconstructions.
Partial and complete regeneration phenomena, cases of skeleton habitus restoration have been recorded in representatives of the Late Cretaceous hexactinnelids. Regeneration incidences are in many ways associated with the ability of silicon-producing cells responsible for constructing skeleton-generating elements, spicules, to transform, to rearrange their functions in response to the changes of the organism position on the substrate surface and/or upon the changes of the aquatic environment parameters.
During long-term operation of oil and gas fields in the groundwater on their territory are formed hydrogeochemical anomalies expressed primarily chlorellaman type chemical composition, typical of the zone of active water exchange. The formation of the chemical composition of groundwater is influenced by many factors, both natural and manmade.
Authors: Goncharenko O. P., Solomon M. V., Pervushov E. M., Shelepov D. A.
The paper deals withthe methods forstudying typomorphic featuresof clastogene quartz grains from the Melovatka suite terrigenou srocks within the stratotype and parastratotype sections. Calculated and observable typomorphic features of quartz grains have been examined; statistic analyses of their sphericity and isometricity parameter values have been made. Criteria for determining petrogenic or lithogenic nature of clastogene quartz have been specified.
Authors: Zozyrev Y. N., Vorobyov V. Y., Zozyrev N. Y., Ilyasov V. N., Ilyasov S. V., Ilyasov V. S.
Most of the Volga phosphate deposits are categorized as hard to recover, therefore traditional mining can result in environmental problems. An experimental rig model was manufactured for the shaftless mineral production from the thin productive layers. The projected productive capacity of a single production unit is 20,000 tons per year.

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