Инд. авторы:	Krivolutskaya N.A., Kuzmin D.V., Gongalsky B.I., Roshchina I.A., Kononkova N.N., Svirskaya N.M., Romashova T.V.
Заглавие:	Stages of Trap Magmatism in the Norilsk Area: New Data on the Structure and Geochemistry of the Volcanic Rocks
Библ. ссылка:	Krivolutskaya N.A., Kuzmin D.V., Gongalsky B.I., Roshchina I.A., Kononkova N.N., Svirskaya N.M., Romashova T.V. Stages of Trap Magmatism in the Norilsk Area: New Data on the Structure and Geochemistry of the Volcanic Rocks // Geochemistry International. - 2018. - Vol.56. - Iss. 5. - P.419-437. - ISSN 0016-7029. - EISSN 1531-8397.
Внешние системы:	DOI: 10.1134/S0016702918050026; РИНЦ: 35513086; SCOPUS: 2-s2.0-85046530962; WoS: 000431410400002;
Реферат:	eng: A periodic character of the evolution of trap magmatism was inferred by many researchers from the fact that sequences of volcanic rocks consist of alternating units of lava flows and tuff. A new phase of studying magmatic rocks in the Siberian Platform was related to the possibility of apply high-precision geochemical techniques in studying trace elements and Sr, Nd, and Pb isotopic compositions. The use of these techniques made it possible not only to identify small individual cycles in the vertical sections of volcanic rocks but also to distinguish larger stages. The currently most widely acknowledged scenario of the origin of volcanic rocks involves three stages, during which oceanic-island basalts (OIB), transitional series (intermediate between OIB and WPB), and within-plate basalts (WPB) were formed. This scenario was inferred mostly from data on rocks in the western part of the Norilsk area (Kharaelakh Trough). This publication presents recently obtained data on the inner structure of the sequences of volcanic rocks and the geochemistry of basalts in the eastern part of the territory, where no rocks show transitional characteristics have ever been found. They can be classified into two types that have clearly different composition and occur in different areas. These types characterize two major stages of the origin of volcanic rocks: rift-related and trap magmatism itself. The rocks produced during these stages occur at neighboring territories. © 2018, Pleiades Publishing, Ltd.
Ключевые слова:	Russian Federation; Norilsk; Krasnoyarsk [Russian Federation]; volcanic rock; tuff; trap (geological structure); trace element; magmatism; lava flow; igneous geochemistry; Volcanoes; traps; Siberian platform; Periodic characters; Norilsk district; Magmatisms; Isotopic composition; Geochemical techniques; Trace elements; Structural geology; Geochemistry; Basalt; traps; trace elements; Siberian Platform; Norilsk district; magmatism; Oceanic island basalts; Siberian Platform;
Издано:	2018
Физ. характеристика:	с.419-437
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