naa a22 4500 510736564 CHVBK 20180411083012.0 cr unu---uuuuu 180411e20130901xx s 000 0 eng 10.1134/S1075701513050024 doi (NATIONALLICENCE)springer-10.1134/S1075701513050024 Model of formation of the Khibiny-Lovozero ore-bearing volcanic-plutonic complex [Elektronische Daten] [A. Arzamastsev, L. Arzamastseva, A. Zhirova, V. Glaznev] The paper presents the results of a study of the large Paleozoic ore-magmatic system in the northeastern Fennoscandian Shield comprising the Khibiny and Lovozero plutons, the Kurga intrusion, volcanic rocks, and numerous alkaline dike swarms. As follows from the results of deep drilling and 3D geophysical simulation, large bodies of rocks pertaining to the ultramafic alkaline complex occur at the lower level of the ore-magmatic system. Peridotite, pyroxenite, melilitolite, melteigite, and ijolite occupy more than 50 vol % of the volcanic-plutonic complex within the upper 15 km accessible to gravity exploration. The proposed model represents the ore-magmatic system as a conjugate network of mantle magmatic sources localized at different depth levels and periodically supplying the melts belonging to the two autonomous groups: (1) ultramafic alkaline rocks with carbonatites and (2) alkali syenites-peralkaline syenites, which were formed synchronously having a common system of outlet conduits. With allowance for the available isotopic datings and new geochronological evidence, the duration of complex formation beginning from supply of the first batches of melt into calderas and up to postmagmatic events, expressed in formation of late pegmatoids, was no less than 25 Ma. Pleiades Publishing, Ltd., 2013 Arzamastsev A. Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences, nab. Makarova 2, 199034, St. Petersburg, Rusiia aut Arzamastseva L. Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences, nab. Makarova 2, 199034, St. Petersburg, Rusiia aut Zhirova A. Geological Institute, Kola Science Center, Russian Academy of Sciences, ul. Fersmana 14, 184209, Apatity, Murmansk oblast, Russia aut Glaznev V. Voronezh State University, Universitetskaya pl. 1, 394006, Voronezh, Russia aut Geology of Ore Deposits Springer US; http://www.springer-ny.com 55/5(2013-09-01), 341-356 1075-7015 55:5<341 2013 55 11477 https://doi.org/10.1134/S1075701513050024 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1134/S1075701513050024 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Arzamastsev A. Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences, nab. Makarova 2, 199034, St. Petersburg, Rusiia aut NATIONALLICENCE 700 1- Arzamastseva L. Institute of Precambrian Geology and Geochronology, Russian Academy of Sciences, nab. Makarova 2, 199034, St. Petersburg, Rusiia aut NATIONALLICENCE 700 1- Zhirova A. Geological Institute, Kola Science Center, Russian Academy of Sciences, ul. Fersmana 14, 184209, Apatity, Murmansk oblast, Russia aut NATIONALLICENCE 700 1- Glaznev V. Voronezh State University, Universitetskaya pl. 1, 394006, Voronezh, Russia aut NATIONALLICENCE 773 0- Geology of Ore Deposits Springer US; http://www.springer-ny.com 55/5(2013-09-01), 341-356 1075-7015 55:5<341 2013 55 11477 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer