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Vol. 3 (2000 year), No. 2
Gavrilenko B.V., Mitrofanov F.P., Zozulya D.R., Chikiryov I.V., Sorokhtin N.O., Kalachyov V.Yu., Basalaeva V.I.
Diamond placer's potential of the Kola region
The Quarternary sediments of the continental interior and offshore part of the Kola Peninsula have been studied to reveal the diamond placer's potential of the region. The set of geophysical, lithological, mineralogical, petrographical and geochemical methods has been used. The diamonds and kimberlitic indicator minerals have been found in the alluvial and marine sediments. It has been substantiated that the region is highly promising on occurrence of diamond placers. The new diamondiferous kimberlitic fields on the Tersky Coast, Pulonga and Snezhnitza have been found out.
(in Russian, стр.10, fig. 7, tables. 6, ref 16, MS Word 95, MS Word 95 434 Kb)
Vol. 5 (2002 year), No. 1
Sorokhtin N.O.
Climate in the Precambrian and the Guron glaciation origin
The paper shows that during the Archaean there was a hot (70-80°С) and acid (Ph 3-5) ocean, where many ore elements and compounds were dissolved. During the Early Proterozoic (about 2.4 Ga ago) nearly all the carbon dioxide of the dense Archaean atmosphere was associated within the carbonates, the ocean had become cool and neutral. Consequently, the earlier dissolved ore components precipitated and formed unique stratiform deposits of gold, uranium, copper and polymetals. Due to the sharp cold snap and highstand of continents the extent cover (Guron) glaciation occurred firstly for the Earth during the Early Proterozoic, being manifested on nearly all the continental shields of that time.
(in Russian, стр.18, fig. 15, tables. 0, ref 35, MS Word 95, MS Word 95 346 Kb)
Vol. 7 (2004 year), No. 1
Sorokhtin N.O.
The early stages of the Earth's evolution
The paper concerns the mechanisms of the Earth's evolution during the Precambrian Time and possible way of the Earth's core isolation process. The mantle overheating mechanisms and regularities of lithosphere formation have been determined. The modern views on the Earth formation process and interaction between the Earth and Moon have been described.
(in Russian, стр.18, fig. 16, tables. 1, ref 37, MS Word 95, MS Word 95 653 Kb)
Vol. 12 (2009 year), No. 3
Sorokhtin N.O., Kozlov N.E., Martynov E.V., Kozlova N.E.
The Late Archaean comatiites: Certain aspects of ore content
Boninites are characterised by a great range of variety and they cannot be practically compared with igneous rocks like picrites, picrite-basalts, basalts, andesites, dacite, and rhyolites. This feature is conditioned by the presence of non-equilibrium phases: quarts-normative matrix and olivine impregnation. Abundance ratio and composition of non-equilibrium phases may be different, and that causes the variety of boninites. The boninite magmas were probably generated by the process of fractional crystallisation of high-magnesium picrite and picrite-basalt melts in subvolcanic conditions. It is necessary for the formation of boninites magmas that the eruption of magma was occurred at a definite stage of crystallisation before olivine separation.
(in Russian, стр.9, fig. 6, tables. 3, ref 20, Adobe PDF, Adobe PDF 0 Kb)
Vol. 13 (2010 year), No. 4
Sorokhtin N.O., Kozlov N.E., Glaznev V.N., Chikiryov I.V.
Oil-and-gas content potential of western part of the Arctic shelf of Russia and forecast search criteria hydrocarbon raw materials in the coastal zone of the Kola Peninsula
Along with the already identified and partly explored large and unique oil and gas deposits in the western part of the Arctic shelf of Russia there are three potentially rich by hydrocarbon raw material and insufficiently investigated areas which can essentially increase oil-and-gas potential of all region if industrially significant congestion will be discovered there. It is the northern extremity of Murmansk area within the limits of the Peninsula Rybachi and immediate proximity from the regional center, the territory of Franz Josef Land archipelago and the North-Kara shelf. The assumption has been made that questions of detection of hydrocarbons deposits in two first of the listed areas in modern conditions are most actual. Prospects of the oil contents and foulness of north-western part of the Kola Peninsula have been considered in detail.
(in Russian, стр.15, fig. 6, tables. 0, ref 35, Adobe PDF, Adobe PDF 0 Kb)
Vol. 15 (2012 year), No. 2
Sorokhtin N.O., Chilingarian G.V., Kozlov N.E., Nesterenko I.S.
Geodynamics of oil-and-gas structures of the Western part of the Arctic shelf of Eurasia
This paper reviews the questions of polyphasic development of the western part of the Arctic shelf of Eurasia. The existential interrelation of geodynamic processes has been considered and formation of conditions favorable for UV accumulation in sedimentary complexes of the shelf seas has been proved.
(in Russian, стр.9, fig. 4, tables. 0, ref 15, Adobe PDF, Adobe PDF 0 Kb)
Vol. 15 (2012 year), No. 2
Sorokhtin N.O., Chilingarian G.V., Kozlov N.E., Nesterenko I.S.
Oil and gas prospects of the European part of the Arctic shelf of Russia
Four oil and gas generation intervals have been identified in the western part of the Arctic shelf of Russia. A number of large and unique oil and gas fields have already been discovered and partially appraised, as a result, three potential hydrocarbon areas, still insufficiently studied, have been identified within the subject area. These potential hydrocarbon areas are the northern extremity of the Murmansk region in the Rybachy Peninsula, Franz-Joseph Land Archipelago and the North-Kara shelf. The assumption has been made that detection of hydrocarbon deposits in two first of the listed areas are most actual in modern conditions.
(in English, стр.10, fig. 6, tables. 0, ref 20, Adobe PDF, Adobe PDF 0 Kb)