04.00.00 Geological-mineralogical sciences
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04.00.00 Geological-mineralogical sciences
DescriptionThe dynamics of changes in the species diversity of radiolarians during the last 150 million years with accuracy to one geological century was determined. The basic patterns of species and taxa of high rank change had been established for the boundary between Cretaceous and Paleogene. There were revealed topomorphic features of bipolar species, which have succeeded from the Cretaceous into the Paleogene and became ancestors of Cenozoic radiolarian fauna. Changes in the species number in the boundary between Cretaceous and Paleogene periods, and also significant variations in the species diversity in Paleocene and Eocene are connected to a combination of a number of factors. The most important of those factors are geological processes, causing extensive transgressions and regressions, climate variability, the overall evolution direction of the Earth biota and competition for important chemical components for the Radiolaria’s livelihood. The emergence of powerful tropical forests on the land with their huge bio-production and bio-chemical erosion is connected to late Cretaceous era. This resulted increasing of the dissolved material proceeding into the sedimentation pool, what is confirmed by classical bauxites emergence. Because aluminium oxide and silicon oxide are geochemically connected, we can state as well about increasing of dissolved silica flow initiated development of Diatoms, which became competitors to Radiolaria in their battle for silica. The last ones are lost this battle, what caused the species decreasing. That was not a catastrophic event with immediate extinction, but a long process
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04.00.00 Geological-mineralogical sciences
DescriptionHydrothermal conditions have a significant effect on catalase activity of soils of the South of Russia. The linear dependence of catalase activity in the upper horizons soils from average annual rainfall, aridity index of de Martonne and the coefficient of moisture of Mezentseva. In terms of catalase activity of the entire humus profile we revealed that the maximum activity has leached black soil, located in the medial climate conditions of the South of Russia
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EFFECT OF RECREATIONAL LOAD ON SOIL RESERVE “UTRISH”
04.00.00 Geological-mineralogical sciences
DescriptionThe original soils were investigated at the Black Sea coast of Russia. Severe degradation of the soil in a Utrish nation reserve were identified as a result of high recreational pressure. Soils with high recreational load have low humus content (2-3 times) and a lower en-zymatic activity than the control of the soil. Biological parameters can be successfully used for environmental monitoring of soil of Utrish reserve, in contrast to the chemical and physic-chemical properties
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CHANGE OF BIOLOGICAL ACTIVITY OF SOILS OF NORTH CAUCASUS IN RELATION TO CLIMATE
04.00.00 Geological-mineralogical sciences
DescriptionClimatic conditions have considerable impact on biological properties of soils of the South of Russia. From all studied indicators the most dependent on climate there was maintenance of a humus and activity of polyphenoloxidases and peroxidases. Values of the integrated indicator of a biological condition (IIBC) on a profile of soils decrease in process of increase in an amount of precipitation, decrease in temperature, and increase in height of the district in next order: meadow subalpine → brown forest → gray forest → black leached soil → black typical soil → black ordinary soi
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04.00.00 Geological-mineralogical sciences
DescriptionIn West Karelia (Severny Prigranichny locality), an extension of the Hattu greenstone belt (Finland) was traced and diorite-tonalite and granodiorite complexes, similar in petrochemical characteristics to the Kuittila and Viluvaara complexes, and near-N-S-trending shear-zones, favourable for gold concentration, were revealed. Gold is most likely to occur in Kadilampi-type massives, in schistosity and silicification zones in them and in their haloes. Gold ore occurrences and mineralization points, such as Kadilampi, Kuslokki, Gornoye, Soluha, Kappala and some others, were located
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04.00.00 Geological-mineralogical sciences
DescriptionWe have analyzed patterns of change in deformations at frost penetration depending on the humidity, density and concentration of the salt solution pore of CaCI2
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04.00.00 Geological-mineralogical sciences
DescriptionWe have analyzed patterns of change in deformations at frost penetration depending on the humidity, density and concentration of the salt solution pore NaCI
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EXPLORATION OF TECTONIC PARAGENE-SISES, AND THEIR INFLUENCING ON THE HILLS CONSTITUTION
04.00.00 Geological-mineralogical sciences
DescriptionIn this article, the tectonic framework of terrain of construction of a railway tunnel №6 is considered: mated automobile and railway Adler – Alpika – Ser-vice mountain-climate health resort. Endogenic allocation of a fracturing in a rocky block in directions and a density function on a block is learnt in details. The fracturing assaying on reference stages has demonstrated all spectrum of allocations of the basic linear flaws and the loosened bands
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INTEGRATED GEOECOLOGICAL ASSESSMENT OF MINING AND INDUSTRIAL AREAS OF THE NORTH URALS
04.00.00 Geological-mineralogical sciences
DescriptionIn this article, the technique to an integrated geoecological assessment on an example of the mining and industrial region of Northern Ural is considered. The geoecological analysis shows that the main influence on the environment has mining and recent geodynamics
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ACTIONS FOR PROTECTION OF THE ENVIROMENT IN THE DEVELOPMENT OF PRIDOROZHNOE MINEFIELD (PERM REGION)
04.00.00 Geological-mineralogical sciences
DescriptionIn this article we have analyzed the geological structure and hydrogeological conditions of the minefield; we have also shown the characteristic of land planned for recultivation. We have found that recultivation provides different directions