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Date submitted1983-09-05
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Date accepted1983-11-14
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Date published1984-12-05
Seismic boundaries of the consolidated crust of the Baltic Shield
- Authors:
- I. V. Litvinenko
As is known, the main information on the structure of the consolidated continental crust is currently obtained by means of depth seismic soundings (DSS). According to DSS data, everywhere in the Earth's crust, gentle seismic boundaries are traced.
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Date submitted1983-09-29
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Date accepted1983-11-23
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Date published1984-12-05
Transverse waves during depth seismic sounding on the Baltic Shield
- Authors:
- A. G. Goncharov
Transverse waves in deep seismic soundings (DSS) in the eastern (Soviet) part of the Baltic Shield were hardly studied until recently because of the insufficient recording time interval of the equipment used.
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Date submitted1983-09-11
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Date accepted1983-11-12
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Date published1984-12-05
Experience of application of integrated seismoacoustic studies at the Pechenga ore field
In the Pechenga ore field in order to clarify its structures in the near-well and inter-well space seismoacoustic studies are carried out, including vertical seismic profiling (VSP) and acoustic logging (AL).
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Date submitted1983-09-25
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Date accepted1983-11-23
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Date published1984-12-05
Wave fields corresponding to the zones of tectonic disturbances in ore areas
- Authors:
- O. V. Miroshnikova
- Yu. G. Shopin
The results of seismic surveys in areas composed of magmatic formations indicate a large role in the formation of wave fields of elements of discontinuous tectonics.
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Date submitted1983-09-03
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Date accepted1983-11-17
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Date published1984-12-05
Peculiarities of the deep geoelectric structure of the north-western part of the Kola Peninsula according to magnetotelluric sounding data
- Authors:
- N. D. Vasin
- G. P. Novitsky
In the northwestern part of the Kola Peninsula, as a result of large-scale observations by methods of magnetotelluric profiling (MTP) and telluric currents (TC), an extensive area of anomalously low values of apparent electrical resistivity P T .
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Date submitted1983-09-01
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Date accepted1983-11-15
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Date published1984-12-05
Planetary faults of the Baltic Shield according to gravity data
- Authors:
- E. K. Chechel
- G. N. Shablinsky
Deep faults are identified by us with lines or zones of disturbance of horizontal layering of rocks of the Earth's crust and upper mantle. Such disturbances in gravity survey are approximated by structures like vertical or steeply sloping ledge, and the location of the lateral edge of the ledge or fault zone is characterized by maximum horizontal gradients of gravity.
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Date submitted1983-09-23
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Date accepted1983-11-23
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Date published1984-12-05
Influence of climate fluctuations and water infiltration on the thermal regime of the layered strata of the upper part of the Earth's crust
- Authors:
- G. A. Cheremensky
The study of the influence of climatic fluctuations and water infiltration on the thermal regime of the upper part of the layered earth crust, layers of daily, annual, perennial and other heat cycles is important for the interpretation of hydrogeological, geophysical, engineering-geological and other data, for the establishment of regularities of distribution, formation and preservation of mineral deposits in the search, exploration and exploitation of these deposits, in assessing the overall thermal balance of the earth's surface, as well as in solving agrotechnical and technical problems.
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Date submitted1983-09-22
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Date accepted1983-11-12
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Date published1984-12-05
Estimation of formation energy of the Kalevala ring structure (Karelia)
- Authors:
- T. N. Simonenko
Comparison of ring structures of the Earth's surface up to several hundred kilometers in diameter, registered on space images, with geophysical fields allows us to draw a conclusion about their different origin.
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Date submitted1983-09-12
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Date accepted1983-11-19
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Date published1984-12-05
Application of complex aerogeophysical survey in search of muscovite deposits in Northern Karelia
In 1978-1981 in PGO Sevzapgeologia was proposed a set of radio-geochemical methods of searching for deposits of muscovite pegmatites, based on their uranium specialization and regular connection of radio-geochemical halos with pegmatite fields in the territory of the White Sea pegmatite province.
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Date submitted1983-09-24
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Date accepted1983-11-30
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Date published1984-12-05
Mass attraction field of a simple layer of variable density polygonal loosely oriented plate
- Authors:
- G. G. Kravtsov
The analytics of the solution of the direct problem of the Newtonian potential for arbitrarily placed in space flat material polygons and for an irregular polyhedron is in many respects similar.
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Date submitted1983-09-22
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Date accepted1983-11-03
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Date published1984-12-05
Decomposition of ∆T and Za magnetic anomaly of a three-dimensional source into natural orthogonal components
- Authors:
- V. V. Glazunov
The anomaly of the harmonic approximation of the ∆T magnitude of a three-dimensional source is generally formed by five components of the magnetic field...
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Date submitted1983-09-09
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Date accepted1983-11-12
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Date published1984-12-05
Determination of the position in the section of linear anticlinal folds vaults by ΔT anomalies
- Authors:
- V. P. Zakharov
Folded structures, including anticlines, are revealed by magnetic imaging due to the presence of magnetic marking horizons or strata in them. It is quite common to find anticlinal folds, in the section of which there is only one such horizon.
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Date submitted1983-09-07
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Date accepted1983-11-23
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Date published1984-12-05
Experience in interpreting on the computer the difference anomalies ∆Тp of linear anticlinal structures.
- Authors:
- Yu. P. Goryachev
Aeromagnetic survey has long been widely used to study the geological structure of the Baltic Shield. It is used to reliably map massifs of intrusive rocks, discontinuities, individual fold structures, in the structure of which there are relatively strongly magnetic marking horizons.
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Date submitted1983-09-06
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Date accepted1983-11-17
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Date published1984-12-05
Selection of optimal loop sizes for the induction method of electrical exploration
- Authors:
- V. Kh. Zakharov
A closed loop fed with alternating current is one of the main ways of excitation of the electromagnetic field in the induction method of electrical exploration. The degree of excitation of the desired object is known to be one of the main factors in improving the efficiency of the method.
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Date submitted1983-09-11
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Date accepted1983-11-18
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Date published1984-12-05
Equation of polarization curve at galvano-dynamic method of recording
- Authors:
- O. F. Putikov
Consider the equation of the polarization curve for a flat electrode in the course of electrochemical reactions on it of various types.
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Date submitted1983-09-05
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Date accepted1983-11-06
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Date published1984-12-05
Distribution of the double electric layer potential on the day surface
- Authors:
- N. V. Semevskaya
The natural field method is widely used in exploration geophysics to detect ore deposits. Recently, this method has also been used to study geologic objects with low electrical conductivity, i.e. non-metallic deposits.
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Date submitted1983-09-21
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Date accepted1983-11-06
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Date published1984-12-05
Peculiarities of application of pulse methods in background-free polarography of natural waters
- Authors:
- N. N. Uvarov
In recent years, a number of works have appeared on the application of polarographic logging to study the composition of natural waters in natural deposits. The studies used a constant-current modification of polarography with a sensor in the form of a mercury drop electrode (MRE).
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Date submitted1983-09-01
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Date accepted1983-11-12
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Date published1984-12-05
Control of dynamic range of recording in digital seismoacoustic systems
- Authors:
- A. I. Svechnikov
Seismoacoustic methods are often used in geophysical investigations in water areas to study the structure and composition of bottom sediments, with the interpretation stage usually analyzing information representing the response of the studied medium to the probing acoustic pulse.