Precambrian lithospheric evolution of the Fennoscandian Shield
Generalized reconstructions have been made on the basis of integrated DSS and CDP data and seismological evidence of local and remote earthquakes obtained for the Fennoscandian Shield over the last forty years. They have provided quantitative information on the horizontal and vertical heterogeneities of the lithosphere. Three-dimensional seismogeological models for some parts of the Fennoscandian Shield have been constructed for the first time. They show that the crystalline crust attains a blocky-hierarchical structure and that no persistent seismic boundaries have been found within the entire shield. In the upper part of the crust, both waveguides and high-velocity zones, which correlate with geological bodies, occur locally. The structural plans of velocity isolines in various deep sections have been found to be inconsistent. It has been proved that major geological provinces differ in crustal thickness, while Early Proterozoic volcanogenic belts display elevated velocities and crustal thickness. Anomalously high velocity layers in the upper mantle of the Fennoscandian Shield have been identified. The structure of the upper portion of the lithosphere was found to be geologically and geophysically related to the geological units of the Palaeoproterozoic East Scandinavian basic large igneous province.
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Vinogradov A. N., Sviridenko L. P., 1979. Early Precambrian conglomerates of the Baltic Shield as indicator of the initial composition of primary crustal granites. In: The oldest granitoids of the Baltic Shield. Apatity: KRC, RAS, P. 43—49 (in Russian).
Sharov N. V. (ed.), 2004. Deep structure and seismicity of the Karelian region and its margins. Petrozavodsk: KRC, RAS, 353 p. (in Russian).
Gorkovets V. Ya., Rayevskaya M. B., 1988. New data on the geology of Karelian iron-siliceous formations and conditions of production. In: Geology and genesis of Early Precambrian iron deposits. Apatity: KRC, RAS, P. 30—38 (in Russian).
Dokukina K. A., Konilov A. N., 2008. Belamorian eclogitic province-zone of archean paleosubduction. Tonal and regional problems of tectonics and geodynamics. Proceedings of the meeting. V. 1. Moscow, P. 269—272 (in Russian).
Krats K. O. (ed.), 1978. The Earth’s crust in the Eastern Baltic Shieid. Leningrad: Nauka, 231 p. (in Russian).
Kostomuksha Ore Area (geology, deep structure and mineralogeny), 2015. Executive eds V. Ya. Gorkovets, N. V. Sharov. Petrozavodsk: KRC, RAS, 320p. (in Russian).
Letnikov F. A., 1999. Fluids of the continental lithosphere and ore formation problems. Vestnik OGGGGN RAN (4) (in Russian).
Letnikov F. A., Feoktistov G. D., Vilor N. B., Grudinin M. I., Gantimurova T. P., Gantimurov A. A., Dorogokupets P. I., Zhatnuyev N. S., Menaker I. G., Menshagin Yu. V., Savelyeva V. B., Balyshev S. O., 1988. Petrology and fluid regime of the continental lithosphere. Novosibirsk: Nauka, 187 p. (in Russian).
Litvinenko I. V., 1984. Seismic studies of the Earth’s crust of the Baltic Shield. 27th Intern. Geol. Congress. Reports. Vol. 8. C. 08. Geophysics. Moscow: Nauka, P. 9—20 (in Russian).
Mints M. V., 2011. 3D model of deep structure of the Early Precambrian crust in the East European Craton and paleodynamic implications. Geotectonics 45(4), 267—290 (in Russian). doi: 10.1134/S0016852111040054.
Mitrofanov F. P., Bayanova T. B., Korchagin A. U., Groshev N. U., Malich K. N., Chirov D. V., 2013. East Scandinavian and Norilsk extensive basic Pt-Pd ore igneous provinces: geological and metallogenetic correlation. Geol. Ore Deposits. 5(5), 305—319 (in Russian). doi: 10.1134/S107570151305005.
Pavlenkova N. I., 2006. Three-dimensional model of the Earth’s crust of the Baltic Shield based on deep seismic studies. Fizika Zemli (12), 43—54 (in Russian).
Dortman N. B., Magid M. Sh. (eds), 1980. Petrophysical (petrodensity and petromagnetic) maps of geological formations in the eastern Baltic Shield: Explanatory note to 1 : 1 000 000 scale maps. Leningrad: Nauka, 35 p. (in Russian).
Svetov A. P., 1979. Platform basaltic volcanism of the Karelides. Karelia. Leningrad: Nauka, 207 p. (in Russian).
Svetov S. A., 2017. Subduction-accretion complexes in the architecture of an early continental crust in the case study of Karelian Craton. In: Geodynamics of the Early Precambrian: similarity and difference with the Phanerozoic. Petrozavodsk: KRC, RAS, P. 219—222 (in Russian).
Svetov A. P., Sviridenko L. P., 1991. Magmatism of the suture zones of the Baltic Shield. Leningrad: Nauka, 199 p. (in Russian).
Svetov A. P., Sviridenko L. P., 2005. Centres of endogenous magmatic activity and ore formation in the Fennoscandian Shield, Karelian region. Petrozavodsk: KRC, RAS, 357 p. (in Russian).
Svetov A. P., Sviridenko L. P., Ivashchenko V. I., 1990. Volcano-plutonism of the Svecokarelides of the Baltic Shield. Petrozavodsk: KRC, RAS, 318p. (in Russian).
Sviridenko L. P., 1979. Geochemical zonation of Karelian migmatite-granites and its connection with geophysical field nature. In: Precambrian mineralogy and geochemistry of Karelia. Petrozavodsk: KRC, RAS, P. 74—89 (in Russian).
Sviridenko L. P., 1980. Granite formation and problems in Precambrian Earth’s crust formation. Leningrad: Nauka, 216 p. (in Russian).
Sokolov V. A., Galdobina L. P., Ryleev A. V., Sa-tsuk Yu. I., Svetov A. P., Kheyskanen K. I., 1970. Jatulian geology and paleovolcanology of Central Karelia. Petrozavodsk: KRC, RAS, 365 p. (in Russian).
Sharov N. V., Mitrofanov F. P., Verba M. L., Gillen C. (eds), 2005. Structure of the Lithosphere within the Russian Segment of the Barents Sea Region. Petrozavodsk: KRC, RAS, 318 p. (in Russian).
Tsvetkova T. A., Shumlyanskaya L. A., Bugaenko I. V., Zaets L. N., 2009. Seismotomography of the East European platform: three-dimensional P-velocity model of the mantle under the Phennoscandia. P. 1. Geofizicheskiy zhurnal 31(1), 53—72 (in Russian).
Tsvetkova T. A., Shumlyanskaya L. A., Bugaenko I. V., Zaets L. N., 2010. Seismotomography of the East European platform: three-dimensional P-velocity model of the mantle under the Phennoscandia. P. 2. Geofizicheskiy zhurnal 32(1), 60—77 (in Russian).
Chekunov A. V., Starostenko V. I., Krasovskøy S. S., Kutas R. I., Orovetskøy Yu. P., Pashkevich I. K., Tripolskiy A. A., Yeliseyeva S. V., Kupriyenko P. Ya., Mitrofanov F. P., Sharov N. V., Zagorodnyy V. G., Glaznev V. N., Garetskiy R. G., Karatayev G. I., Aksamentova N. V., Tsvoydzinskiy S., Korkhonen Kh., Luosto U., Gaal G., Zhuravlev V. A., Sadov A. S., 1993. Geotransect Euro-3. Geofizicheskiy zhurnal 15(2), 3—32 (in Russian).
Sharov N. V., 2015. Deep seismic studies in the south-eastern Fennoscandian Shield. Geofizicheskiy zhurnal 37(5), 104—120 (in Russian).
Sharov N. V., 1993. Lithosphere of the Baltic Shield Based on the Seismic Data (in Russian). Apatity: KRC, RAS, 144 p. (in Russian).
Sharov N. V., 1982. Seismic data on the M-surface relief of the Baltic Shield. Geofizicheskiy zhurnal 4(1), 91—97 (in Russian).
Sharov N. V., Kulikov V. S., Isanina E. V., Krupnova N. A., 2010. Seismogeologic characteristics of the Earth’s crust of southeastern part Fennoscandian Shield (Russia). Geofizicheskiy zhurnal 32(3), 3—17 (in Russian).
Sharov N. V., Mitrofanov F. P., 2014. Velocity Heterogeneities in the Lithosphere of the Fennoscandian (Baltic) Shield. Doklady AN 454(1), 64—67 (in Russian).
Shchipansky A. A., 2017. Implication for the Geodynamics Evolution through Geological History. In: Geodynamics of the Early Precambrian: similarity and difference with the Phanerozoic. Petrozavodsk: KRC, RAS, P. 278—282 (in Russian).
Korja A., Korja T., Luosto U., Heikkinen P., 1993. Seismic and Geoelectric Evidence for Collisional and Extensional Events in the Fennoscandian Shield — Implications for Precambrian Crustal Evolution. Tectonophysics 219(1-3), 129—152.
Mitrofanov F. P., Sharov N. V., Zagorodny V. G., Glaznev V., Korja A., 1998. Crustal Structure of the Baltic Shield along the Pechenga-Kostomuksha-Lovisa Geotraverse. Int. Geol. Rev. 40(11), 990—997.
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