Геология

Considered the results of ecological and geochemical soil sampling and made the estimate of dusting in the ?Volskcement? cement producing plant affection zone (the city of Volsk, Saratov region), which is the city-forming company and also the main source of environmental impact

Analysis of the published material has made it possible to show the cyclic variations of the earth’s response to be practically coincident with the orbit parameter fluctuations, when the time lag of 5–6 thousand years is considered. In the earth’s response, however, periodicity changes are more complicated due to resonance phenomena and to numerous feedbacks in the system responsible for additional period occurrences.

In 1960–1980, the Elton and the Gremyachka deposits of potassium salts were discovered within the Permian halogen sequences in the Lower Volga Region, bischofite presence was recorded in the Privolzhskaya monocline, the conditions of halogen-bed formation were defined as those peculiar for typical evaporites. But in 1980-2010, halogenesis hypotheses emerged that denied the principal importance of climatic factor and the dominant role of oceanic waters in the brine composition of the salt-generating basin.

Anisotropy of magnetic susceptibility was measured in ~ 1,300 samples from 10 sections of the Tithonian-berriasian of the Central and Eastern Crimea. In consequence of the analysis of magnetic structures were found different degrees of tectonic deformation of rocks and corrected geological structure of explored area

Terrigenous-mineralogic characteristics of the Bobrikovskian horizon within the Saratov Trans-Volga Region is provided in terms of the Berezovskaya group of rises. The quantitative and the qualitative composition changes of the heavy fraction minerals within the section have been determined. The lack of abrupt, intermittent changes of any material composition characteristics testifies to the section relative continuity.

A microbiological indication of anthropogenic disturbed soils from the city Mednogorsk was carried out based on the evaluation of the number of heterotrophic, iron- and manganese-oxidizing bacteria. This study states a relationship between high levels of magnetism in these soil samples and high content of iron-oxidizing bacteria, indicating the possible use of this group of microorganism for monitoring heavy metal contaminated soils.

Tendencies of morphogenesis in the Late Cretaceous modular forms contributed to formations of complexly structured secondary (genuine) colonies. Skeletons of genuine colonial sponges differ not just in numerous and diversely arranged equivalent oscula-carrying modules, but in the presence of the module connecting elements – junctions, as well. Characteristic elements of genuine colony skeletons – ostia – have been recognized between the modules and the junctions.

The anomalous characteristics of the Astrakhan Arch crustal structure were revealed during the seismic data interpretation. They indicate plastic deformations of the lower crust at the sites of its fluidization, manifestation of the waveguide and enhanced permeability zone properties in the upper crust in the ways of the fluid flow. The unique Astrakhan gas condensate field, localized in the carbonate platform of the Middle Carboniferous age at a depth of 4.0 – 4.5 km, was formed in the area of HC-containing deep fluid discharge

The vital problems of passage to the two-bin system of formation in the Russian higher school are represented. Is proposed within the framework [bakalavriata] to go away from the traditional physicomathematical orientation of the programs of geophysical direction to the side of geological priorities. Some aspects of the realization of this idea based on the example of the program of the course of geophysics are examined

The questions need physical and geological modeling in solving inverse problems of geophysics and the notion of a coherent FGM. The key provisions of the agreed methodology seysmogravimetricheskoy FGM, grounded approach to seysmogravimagnetic modeling and provides examples of its implementation