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Vol. 1 (1998 year), No. 1
Mitrofanov F.P., Pripachkin V.A.
New Problems of Fundamental and Applied Geological Science of the Kola Region
The paper presents research material substantiating a new concept of a long-term (3.1-1.6 Ga) pulsation development of the Kola Precambrian collision structure. Updated prognostication and metallogenic inferences are offered on the main types of the region mineral deposits: PGEs, diamonds, oil and gas, construction and decorative stone, and deposits hosted by alkaline intrusions. Geoeconomic and geopolitical aspects of the development of the Murmansk region are considered. An emphasis is made on the potential of the geological education programme which was successfully started and has been carried out on the Kola Peninsula on the basis of the Murmansk State Technical University and Petrozavodsk University.
(in Russian, стр.10, fig. 6, tables. 0, ref 11, MS Word 95, MS Word 95 1410 Kb)
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. 12 (2009 year), No. 3
Mitrofanov F.P., Predovsky A.A., Pripachkin V.A.
On the promising oil and gas content in the sedimentary rocks of the southwestern Kara-Barents Sea productive basin
As a result of isotope U-Pb dating of zircons, titanites and rutiles from rocks of the Por’ya guba area the following sequence of metamorphic events has been revealed for the Kolvitsa belt and the Umba block. The peak of granulite-facies metamorphism connected with the main stage of deformations took place before 1915±7 Ma ago. Decompression and cooling due to starting uplift of rocks began since 1915±7 Ma. Final stages of granulite-facies metamorphism were expressed in widely manifested diaphthoresis at 1909-1898 Ma, that was fixed in formation of high-U zircons. Since 1.92 Ga, metamorphic evolution of the Kolvitsa belt and the Umba block has become joint and synchronous with the Lapland Granulite and the Tanaelv belts. Cooling of rocks to 450 °C occurred 1880-1870 Ma ago, determined by the rutile age. Data on titanite and rutile ages with different closure temperatures for U-Pb system allow to calculate a gradient of cooling of rocks from 650-700° C to 400-450° as ~ 9.1 °/Ma.
(in Russian, стр.9, fig. 4, tables. 0, ref 20, Adobe PDF, Adobe PDF 0 Kb)
Vol. 12 (2009 year), No. 4
Mitrofanov F.P.
The Early Precambrian geodynamics, magmatism and metallogeny of the Kola Province
The paper highlights the leading part of seed exchange between botanical gardens for development of the collection funds. The analysis of herbal perennial introducents' collections in the Polar-Alpine Botanical Garden has been carried out.
(in Russian, стр.4, fig. 11, tables. 0, ref 7, Adobe PDF, Adobe PDF 0 Kb)
Vol. 15 (2012 year), No. 2
Mitrofanov F.P., Malitch K.N., Bayanova T.B., Korchagin A.U., Zhirov D.V.
Comparison of East-Scandinavian and Norilsk large plume mafic igneous provinces of PGE ores
The paper is devoted to issues related to the formation of large low-sulfide PGE ore provinces – East-Scandinavian and Norilsk. Basing multidisciplinary data it has been inferred that East-Scandinavian province is being attributed to an intracratonic type without subduction and crust contamination (with Pt-Pd low-sulfide mineralization to predominate). Norilsk province belongs to pericratonic one with PGE – Ci-Ni rich sulfide mineralization to prevail. It has been shown that the main ore provinces PGE metals essentially formed at later stage of existence and initial break-up of supercontinents – predominantly 2.7-2.5 Ga and 1.8-1.7 Ga as a unique case in the Late Paleozoic (Norilsk). For the first time long duration (dozens of Ma) and multistage nature of ore-magmatic system evolution for the East-Scandinavian mafic Large Igneous Province have been demonstrated and this has made it possible to propose it for Norilsk. Comparison of low-sulfide PGE and sulfide Cu-Ni (with PGE) potential of the mafic intrusions is possible using a series of geological, geophysical and geochronological (U-Pb on zircon and baddeleyite, Sm-Nd on rock-forming and sulfides minerals) and isotope geochemical (?Nd(T), TDm, ISr, 3He/4He) indicators.
(in English, стр.15, fig. 8, tables. 1, ref 41, Adobe PDF, Adobe PDF 0 Kb)