Инд. авторы:	Nedosekova I.L., Belousova E.A., Sharygin V.V., Belyatsky B.V., Bayanova T.B.
Заглавие:	Origin and evolution of the Ilmeny-Vishnevogorsky carbonatites (Urals, Russia): insights from trace-element compositions, and Rb-Sr, Sm-Nd, U-Pb, Lu-Hf isotope data
Библ. ссылка:	Nedosekova I.L., Belousova E.A., Sharygin V.V., Belyatsky B.V., Bayanova T.B. Origin and evolution of the Ilmeny-Vishnevogorsky carbonatites (Urals, Russia): insights from trace-element compositions, and Rb-Sr, Sm-Nd, U-Pb, Lu-Hf isotope data // Mineralogy and Petrology. - 2013. - Vol.107. - Iss. 1. - P.101-123. - ISSN 0930-0708. - EISSN 1438-1168.
Внешние системы:	DOI: 10.1007/s00710-012-0223-9; SCOPUS: 2-s2.0-84873163065; WoS: 000314069200006;
Реферат:	eng: The carbonatites of the Ilmeny-Vishnevogorsky Alkaline Complex (IVAC) are specific in geological and geochemical aspects and differ by some characteristics from classic carbonatites of the zoned alkaline-ultramafic complexes. Geological, geochemical and isotopic data and comparison with relevant experimental systems show that the IVAC carbonatites are genetically related to miaskites, and seem to be formed as a result of separation of carbonatite liquid from a miaskitic magma. Appreciable role of a carbonate fluid is established at the later stages of carbonatite formation. The trace element contents in the IVAC carbonatites are similar to carbonatites of the ultramafic-alkaline complexes. The characteristic signatures of the IVAC carbonatites are a high Sr content, a slight depletion in Ba, Nb, D cent D degrees, Ti, Zr, and Hf, and enrichment in HREE in comparison with carbonatites of ultramafic-alkaline complexes. This testifies a specific nature of the IVAC carbonatites related to the fractionation of a miaskitic magma and to further Late Paleozoic metamorphism. Isotope data suggest a mantle source for IVAC carbonatites and indicate that moderately depleted mantle and enriched EMI-type components participated in magma generation. The lower crust could have been involved in the generation of the IVAC magma.
Ключевые слова:	CONSTRAINTS; ZIRCON; MASSIF; COMPLEX; ROCKS; GEOCHEMICAL EVIDENCE; SOUTHERN URALS; KOLA-ALKALINE-PROVINCE; MANTLE; PENINSULA;
Издано:	2013
Физ. характеристика:	с.101-123