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Date submitted2011-08-23
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Date accepted2011-10-05
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Date published2012-02-01
Reconstruction of primary composition of metamorphic rocks of Amurskaya suites (Amurskii superterrane Central Asian orogenic belt)
- Authors:
- A. V. Kurguzova
Composition of amursk suites metamorphic rocks was reconstructed by geochemical discrimination diagrams (Roser, Neelov). Tectonic settings were studied by REE patterns.
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Date submitted2011-08-30
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Date accepted2011-10-11
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Date published2012-02-01
Typomorfic features of the zircon from Verchneurmijsky granite massif (Priamurye)
- Authors:
- M. M. Machevariani
- V. I. Alekseev
Having used electron microscopy permits and microanalysis systems researched typomorphic features of the zircons from Verchneurmijsky granite massif in Priamurye. Crosscutting study of the zircon crystal morphology and ultimate composition to predict peculiar properties of mineragenesis conditions and afford opportunity to draw sharp disjunction of zircon features from different intrusive phases. Features of the zircons can be used at regional partition of intrusive formations and searches of rare-metal granites.
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Date submitted2011-08-17
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Date accepted2011-10-07
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Date published2012-02-01
Analysis of urals diamonds by infrared spectrometry method
- Authors:
- Yu. V. Nefedov
Collection of Urals diamonds from Mining museum was studied by infrared spectrometry method. For thermal conditions reconstruction of diamond formation were constructed Taylor Wayne diagrams with calculated isothermal curves. Diagram of B2 defects distribution was done. Analyzed geographical location of diamonds. The conclusion about thermal formation conditions and possible belonging to the sea stream gravels were done.
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Date submitted2011-08-26
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Date accepted2011-10-02
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Date published2012-02-01
Control of the condition of the rock-mass condition using tansducers of hydrostatie pressure during mining escalator tunnel of «Admiralteiskaya» underground station
In this article is shown the sequence of hydro-geological monitoring of the rock-mass condition while conducting mining works of «Admiralteiskaya» underground station escalator tunnel. Are revealed flow laws of underground water in natural conditions; is considered influence of atmospheric pressure on the hydrostatic one. Also are drawn preliminary conclusions of escalator tunnel mining (using hydro-cantledge) influence on pressures in rock-mass.
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Date submitted2011-08-19
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Date accepted2011-10-17
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Date published2012-02-01
Projecting peculiarities and experimens interpretation of testing in heterogeneous aquifer system on the example of diamond deposits named by V.Grib
- Authors:
- Yu. A. Novatorov
- I. B. Petrova
- A. V. Yashina
The results of testing olmugo-okunevsky aquifer by alignment pumping, held on the stage of detailed exploration of diamond deposit named by V.Grib, are presented.The technique of pumping test interpretation by analytical methods by using the program «ANSDIMAT» is stated. The results of slug tests in the boreholes are also shown.
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Date submitted2011-08-18
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Date accepted2011-10-20
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Date published2012-02-01
Distribution of rare earth elements in ores Elov and Buructal supergene nickel deposits
Weathering processes and infiltration metasomatic processes in the weathering crusts hyperbasite arrays have a positive effect on the accumulation of rare earth elements. The content of rare earth elements is steadily increasing bottom-up on the profile of weathering. Metasomatic upper profile characterized by a high content of rare earth elements, which leads to the appearance of rare earth elements phosphate mineral phase – xenotime found in this laterite for the first time. The composition of the rare earth elements in incorporating their metasomatic and minerals demonstrates chondritic distribution.
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Date submitted2011-08-01
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Date accepted2011-10-20
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Date published2012-02-01
Investigation of hydrodynamic conditions Ashadze vent fields (mid-atlantic ridge)
- Authors:
- S. M. Sudarikov
- P. A. Marshak
The main geological and thermodynamic conditions of hydrothermal vents formation and activity. Calculation of hydrothermal field vents flow have been made after E.S.Romm model. A comparison of model data with data obtained in the Russian-French expedition «SERPENTINE».
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Date submitted2011-08-09
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Date accepted2011-10-09
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Date published2012-02-01
Chemical composition of submarine hydrothermal solutions at 12о58' n.l. of Mid-Atlantic ridge
- Authors:
- S. M. Sudarikov
- N. N. Mikhalchuk
A genesis of hydrothermal solutions of the explored area is observed. A short characteristic of main settings determining the ore-forming features of hydrothermal solutions is given. The groups of elements connected with the hydrothermal solutions-seawater mixing are marked out as well as those coming directly from the magmatic chamber and contacting rocks.
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Date submitted2011-08-12
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Date accepted2011-10-14
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Date published2012-02-01
Industrial gold mineralization in the structures of the mineralized zones on the example оf the Natalka deposit in Magadan region
- Authors:
- K. E. Chernyshev
The laws of distribution of the masses of gold at the stages of ore formation, role and the meaning of each stage in the formation of industrial mineralization. On this basis are estimated approaches to prospective evaluation of the flanks and deep horizons of deposit.
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Date submitted2011-07-16
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Date accepted2011-09-13
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Date published2012-01-01
Revealing of primary sources for placer gold in the Nora river basin Selemdzhinsky district of Amur region
- Authors:
- Ya. Yu. Bushuev
On the base of typomorphic peculiarities of gold from placers and primary occurrences there are made conclusions about multistage and polytypic character of gold mineralization at the area, with some assumptions for belonging of gold occurrences to certain ore formation types. These data may be used as guidance for prospecting expansion.
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Date submitted2011-07-20
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Date accepted2011-09-19
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Date published2012-01-01
Microbial activity in mine working and its influence on high-grade iron ore's and constructional material's properties
- Authors:
- R. E. Dashko
- I. V. Alekseev
Development’s conditions and sources of microorganisms in high-grade iron ore (HGIO) of Jakovlevsky deposit (KMA) were considered. Influence of watering, draining and contamina tion in iron ore on decreasing of shear strength and growth of bacterial mass were noticed. Dif ferent physiological groups and species composition of microorganisms in underground space were defined, and their influences on constructional materials which are used to coffer mine workings were studied.
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Date submitted2011-07-21
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Date accepted2011-09-25
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Date published2012-01-01
Hydro-geological monitoring on the Jakovlevsky mine as implement of increase safety conducting mine second working in difficult mine-geological conditions
- Authors:
- R. E. Dashko
- E. N. Kovaleva
In article researched difficult hydro-geological conditions of the Jakovlevsky deposit rich iron ores on which mining going under not-drained high-pressured bottomcoal water-bearing horizon. The purpose spent monitoring is resulted. The comparative analysis of results of three cycles of a hydro-geological monitoring which has shown gradual expansion of front of an over flowing of underground waters from not-drained horizon is made. Negative consequences of such process are specified. The development features of various biological forms of a life in mine which destroy construction materials are noted. Actions for decrease in consequences of an overflowing are planned.
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Date submitted2011-07-14
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Date accepted2011-09-06
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Date published2012-01-01
Study of engineering-geological and microbiological factors for assessing the dynamics of fracture in tunnel highway Saint Petersburg – Kiev
- Authors:
- R. E. Dashko
- K. V. Pankratova
- A. A. Korobko
Reasons of transition tunnel construction to the pre-emergency state and the nature of landslide displacements trimmed slope, which can be traced in the context of the Lower Cambrian blue clay are defined. Influence of microbial activity as a negative factor fracture of structural materials, as well as strength reducing of blue clay. Regularities of changes in the state and the strength of blue clay at the depth, taking into account their degree of disintegration – layering and fracturing. The quantitative evaluation of stability of the construction of the transport tunnel, taking into account changes in the strength of blue clay as an fissered medium at different positions of the landslide surface. The strategy of measures to ensure the reliability of the facilities.
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Date submitted2011-07-09
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Date accepted2011-09-13
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Date published2012-01-01
Engiineering-geological and hydrogeological problems of st. Isaak cathedral’s long-term stability substantiation (Saint-Petersburg)
In the paper construction specificity of St. Isaak Cathedral’s underground space and engineering geological profile features are considered. The comparative assessment of condition and properties modification of water-saturated quarternary sandy and clay soils during 55 years are taken up (1954-2009). The dynamic of groundwater contamination due to leakage sewers and its aggressiveness are estimated. The researches of microbes activity in soils which are characterized by quasiheavy values are completed. The structural of complex monitoring to secure of St. Isaak Cathedral long-term stability are proposed.
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Date submitted2011-07-02
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Date accepted2011-09-19
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Date published2012-01-01
The distribution of late quaternary glacial-marine deposite on the norternmost part оf Novaya Zemlya shelf
Present article represents geologic-geomorphologic and structural features of Late Quaternary glacial-marine sediments in the northernmost part of Novaya Zemlya shelf. Upper regional unconformity (URU), Late Quaternary glacial complex bottom and exaration markers were plotted within the studied area.
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Date submitted2011-07-12
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Date accepted2011-09-26
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Date published2012-01-01
Devonian organic massif in the basins of the rivers Kara-Silovayaha (the southest Pai-Hoi)
- Authors:
- A. L. Zherlygin
The results of biostratigraphic and litologo-genetic researches in the basins of the rivers Kara and Silovoyaha in the southest Pai-Hoi have allowed to ascertain existence Devonian organic massif – a huge geological substance which thickness is about 1700 m and occupies the space not less than 400 km2. Features of its structure are revealed and the formation history is reconstructed.
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Date submitted2011-07-23
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Date accepted2011-09-10
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Date published2012-01-01
Geotechnical engineering providing of stability analysis of buildings and structures erected оn the upper vendian clays (Saint Petersburg)
- Authors:
- A. M. Zhukova
The need to analyze clays of the Lower Cambrian and the Upper Vendian as the crackblock structure, taking into account the influence of micro- and makrojointing of rocks in the calculation of stability, is indicated. The influence of sample size of the Upper Vendian clays on the value of cohesion and modulus of total deformation, depending on the level of stress and strain conditions, was analyzed. The influence of microcracks on the mechanical properties of clays is recommended to study under laboratory conditions, makrocracks – through field testing or calculation method.
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Date submitted2011-07-19
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Date accepted2011-09-02
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Date published2012-01-01
Comparative analysis of the quartz aggregates fabric of different genesis
- Authors:
- E. L. Kotova
Stereometric analysis quartz rock fabric of the different genesis was realized. The purposes of research were to obtain anatomic and morphologic characteristics of quartzite aggregate, to compare with structural and textural parameters of aggregate of the quartz veins to acquire extra data to prove exploration of this massive with the perspective using quartzite as a raw material for melting and glass industry.
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Date submitted2011-07-25
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Date accepted2011-09-11
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Date published2012-01-01
The improvement of engineering – geological information reliability based on studying the influence of some factors of technogenic effect on the sand-clay soils
- Authors:
- K. V. Pankratova
It is noted that when designing structures for various purposes in order to ensure their long-term stability it is necessary to analyze the possibility of transformation of the basic components of underground space (rocks, underground water, gas, microbiota, underground construction) under the influence of natural and technogenic factors. The research results of the effect of ultraviolet radiation and vibration influence on the activity and the number of microorganisms are presented. The influence of organic pollutants on the physical and mechanical properties of the sand deposits is estimated.
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Date submitted2009-08-05
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Date accepted2009-10-06
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Date published2010-02-01
The problems of stratigraphy on devon оf Polar Urals and Pay-Hoi
- Authors:
- A. L. Zherlygin
The legends of the Polar Urals and Pay-Hoi map series were estimated for proving the mapped subdivisions due to geological survey in the scale 1:200000 conducted in Kara-Silovskaya area (on western slope of the Arctic Urals and the range Pay-Hoi). In the result it was found out that Eletskaya Structure-Formation Zone in Devon was divided into a great number of stratigraphic units, reflecting the lateral substance changes of the same age level. According to it all units are conventionally valid and there are same equal ones among them. The biohermal massifs are not distinguished as independent units.