The highest-quality signals were recorded in the region of the SG-7 (En-Yakhin) superdeep borehole, where the industrial noise is lowest. The connection was carried out by the wire-ground scheme during the routine maintenance of PTL in the nighttime. The external generator was connected to the PTL in upon the agreement with the Yamal-Nenets Enterprise of Main Electric Networks, a branch of OAO FSK ES of Western Siberia. The soundings with the Energiya-2 generator were conducted in the frequency range from 0.38 to 175 Hz. These generators were designed and manufactured at the Kola Science Center of the Russian Academy of Sciences. In the soundings with the Urengoi-Pangody PTL, the Energiya-2 generator capable of supplying up to 200 kW of power and Energiya-3 portable generator with a power of 2 kW were used as the sources. In the controlled-source soundings, the electromagnetic field was generated by the VL Urengoi-Pangody 220-kV industrial power transmission line (PTL), which has a length of 114 km, and ultralow-frequency (ULF) Zevs radiating antenna located at a distance of 2000 km from the signal recording sites. V.Įlectromagnetic soundings with the fields of natural (magnetotelluric (MT), and audio magnetotelluric (AMT)) and high-power controlled sources have been carried out in the region of the SG-6 (Tyumen) and SG-7 (En-Yakhin) superdeep boreholes in the Yamal-Nenets autonomous district (YaNAD). 9 references.Â«Â lessĮlectromagnetic sounding of the Earth's crust in the region of superdeep boreholes of Yamal-Nenets autonomous district using the fields of natural and controlled sources It was found that the elemental compositions of the organic matter from basement depths down to 10 km show patterns analogous to those from sedimentary basins. This paper applies Karavayev's principle to this type of compound. Bitumoids are similar to humites in molecular structure, only somewhat more ordered. In investigating the earth's crust in the Baltic shield, the Kola superdeep drillhole found organic matter in the form of bitumoids, in the extractable part of which a broad spectrum of compounds was identified. The ratio of hydrogen to carbon atoms, as a reflection of the extent of aromatization of the structure, is taken as a classification criterion. Karavayev worked out a classification diagram for solid fuels, based on calculation of the variation in the elemental composition of the organic matter. Regardless of the difference in molecular structure of the final products of these reactions and the phase state in nature (gases, petroleums, bitumens, lignite, bituminous coal or anthracite), fossil fuels manifest the property of carbon and hydrogen to yield a vast number of compounds with different extents of ordering of the structure, from simple linear compounds (methane and its homologs)moreÂ Â» to cyclic compounds of the graphite series. The genetic regularities in the distribution of organic fuels of various elemental compositions and molecular structures and their relationship to the processes of formation of regional structures present some of the most pressing and complicated problems of modern fossil-fuel geology.

This English translation makes the results available to non-Soviet scientists as well.īitumoids in the crystalline rocks of the Kola superdeep drillhole The geological, geophysical and technological data from the Kola well were initially published in a monographic account entitled ''Kol'skaja sverchglubokaja''. The well has reached a depth of 12 km and is thereby the deepest well in the world, yielding a vast amount of information on the structure of the continental crust. Over 15 years ago, Soviet scientist began drilling a superdeep well on the Kola Peninsula near Murmansk. The structure of continental crusts is a subject of ever increasing importance in the geological sciences.

This drastically differences in grains volumes can be explained by the recrystallization processes in deep of the Kola Superdeep Borehole at high temperatures and high pressures.ĭOE Office of Scientific and Technical Information (OSTI.GOV) It was found that the average volumes of the biotite-muscovite grains in surface homologue sample is noticeably larger than the average volume of grains in the deep-seated gneiss sample K-8802. The volumes and size distributions of a biotite-muscovite grains as well as grains orientation distribution have been obtained from experimental data. The volume morphology of a gneiss sample K-8802 recovered from the deep of 8802 m of the Kola Superdeep Borehole and its surface homologue sample PL-36 have been studied by means of neutron radiography and tomography methods.

The Neutron Tomography Studies of the Rocks from the Kola Superdeep Borehole

Central texas doppler radar in motion