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THE DEEP STRUCTURE AND ORE-FORMING SYSTEMS OF THE PECHENGA ORE DISTRICT
Abstract
The drilling and investigation of the Kola superdeep borehole SG-3 provided unique data on the ore formation in the ancient continental crust. They revealed high ore potential of the continental crust at previously inaccessible depths, made in possible to determine parameters of the ore formation in deep zones of the Fennoscandian shield at different stages of its geological development and increased the ore potentional of the Pechenga ore field as the largest in Europe mining area [1]. The ore-forming systems of the Pechenga ore district include well-known Cu-Ni deposits and ore occurrences of PGM, U, Au, Pb and Zn. They comprise 4 different types of systems: PGE - plutonogenic; Cu-Ni is volcano-plutonic; U and Au are fluid-metasomatic, formed in various geotectonic conditions of the Karelian and Svekofen cycles and the hydrotermal Pb-Zn of the Riphean cycle.
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References5
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Lobanov K.V., Kazansky V.I., Kuznetsov A.V., Zharikov A.V. Integrated geodynamic model of the Pechenga ore district based on the correlation of geological, petrological, and petrophysical data from the Kola superdeep borehole and the reference profile at the surface, Modern Problems of Ore Geology, Petrology, Mineralogy and Geochemistry, IGEM RAS, Moscow, 2010, pp 258-300.
Kazansky V.I., Lobanov K.V., Isanina E.V., Sharov N.V. The Paleoproterozoic Pechenga Cu-Ni ore field (Fennoscandian Shield): a fault-bound volcanic center, Izvestiya Earth Sciences section Russian academy of Natural Sciences 33 International Geological Congress. Oslo, Norway, Moscow, Special Issue, N 17, pp 43-46, 2008.
Lobanov K.V., Kazansky V.I. The mantle-crustal ore-forming Cu-Ni system of the Pechenga ore district (Fennoscandian shield), Proceedings of 6 European Congress on Regional Geoscientific Cartography and Information Systems EUREGEO, Munich, Germany, 2009, V. II, pp 201-205.
Lobanov K.V., Kazansky V.I., Chicherov M.V. Gold mineralization in the Kola Superdeep Borehole sequence and at the surface in the Pechenga Ore Province, Materials of the International conference “Gold of the Fennoscandian Shield”. Petrozavodsk, 2013, KNC, pp 121-125.
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