Issues of the journals for 2014 y.

Applications of Electrical resistivity tomography in deep mining prospecting

(Kulikov V.A. Bobachev A.A. Yakovlev A.G. )

The electrical survey is one of the most effective instrument for prospecting and exploration mining deposits. Ore bodies are usually characterized by complex 2D-3D structures. 2D electrical resistivity tomography is effective tools for the investigation of such complex geoelectrical models. The application of standard multielectrode stations are limited by depth of investigation. We developed the modification of dipole-dipole array, which allows to work effectively with the wide range of spacing from tens meter up to some kilometers. The data of the detailed field work with this array are interpreted by routines of 2D inversions. The detailed description of proposed array and the field examples with the depth up to 400-800 meters are shown in this papers.......

  • 2014  № 2, pp. 39-46

Audio-frequency magnetotelluric survey on the run

(Davydov V.A. )

Possibility subsurface audio-frequency magnetotelluric(АМТ) measurements on the run is proved. The short description of the developed equipment and electromagnetic sensors for realisation these task is given. The technique of field works and processing of observations is described, examples of application АМТ surveys on various geological objects are presented.......

  • 2014  № 2, pp. 47-53

Comparison of the magnetic properties traps siberian platform, oceanic basalts and dolerite intrusions on magnetometric measurements in boreholes

(Igolkina G.V. )

Examples are given of the magnetic properties of basalt, undercutting ocean wells and their correlation with traps of the Siberian platform, diorite and dolerite Urals Timan-Pechora oil and gas province. In wells driven in oceanic basalts in the Pacific and Atlantic Oceans and traps eastern Siberia, there are both negative magnetic field and the positive fixed polarity change of the field in the studied wells. Magnetic fields in both cases highly differentiated and have approximately the same intensity. The residual magnetization of oceanic basalts and traps are different, as well as its safety. Above it in oceanic basalts J almost an order of magnitude.......

  • 2014  № 2, pp. 54-60

Building of the deep 3d temperature model of the Hengill geothermal area (Iceland) from the ground electromagnetic data

(Spichak V.V. Zakharova O.K. Goidina A.A. )

The indirect electromagnetic geothermometer is applied to determine three-dimensional temperature model of the Hengill geothermal area up to the depth of 20km. Testing of the temperature model has shown that the accuracy of the temperature forecast at this depth is about 28,5%. The analysis of the temperature distribution in the Hengill area has shown that the background temperature consists of twp layers: from 0 up to 5km with temperatures below 200 °C and from 5 km to 20 km with temperatures in the range 200-400 °C. The background temperature pattern of the crust consisting is supposedly from gabbro a network of high temperature and low resistivity channels is indicated which like a «blood circulation» system cover the study area at the depths 10-15 km and root at depths larger than 20 km.......

  • 2014  № 2, pp. 61-69

Paleotemperature modeling to assess petroleum potential of the Lower Cretaceous sediments Nurol megatrough

(Osipova E.N. )

On the basis of paleotectonic reconstructions and paleotemperature modeling sections 39 deep wells of Nyurolsky megadepression mapped hotspots generation and an assessment of the distribution of the relative weight of the initial geological resources Bazhenov oils. Proposed priority of geological exploration for the identification of productive facilities in the lower Cretaceous sediments.......

  • 2014  № 2, pp. 70-74