Инд. авторы:	Surgutanova E.A., Agashev A.M., Demonterova E.I., Golovin A.V., Pokhilenko N.P.
Заглавие:	Sr and Nd isotope composition of deformed peridotite xenoliths from Udachnaya kimberlite pipe
Библ. ссылка:	Surgutanova E.A., Agashev A.M., Demonterova E.I., Golovin A.V., Pokhilenko N.P. Sr and Nd isotope composition of deformed peridotite xenoliths from Udachnaya kimberlite pipe // Doklady Earth Sciences. - 2016. - Vol.471. - Iss. 1. - P.1204-1207. - ISSN 1028-334X. - EISSN 1531-8354.
Внешние системы:	DOI: 10.1134/S1028334X16110258; SCOPUS: 2-s2.0-84999751685; WoS: 000389909500022;
Реферат:	eng: New results of Rb–Sr and Sm–Nd isotope analyses have been obtained on samples of deformed peridotite xenoliths collected from the Udachnaya kimberlite pipe (Yakutia). The data obtained imply two main stages of metasomatic alteration of the lithospheric mantle base matter in the central part of the Siberian Craton. Elevated ratios of Sr isotopes may be considered as evidence of an ancient stage of metasomatic enrichment by a carbonatite melt. The acquired Nd isotope composition together with the geochemistry of the deformed peridotite xenoliths suggests that the second stage of metasomatic alteration took place shortly before formation of the kimberlite melt. The metasomatic agent of this stage had a silicate character and arrived from an asthenosphere source, common for the normal OIB type (PREMA) and the Group-I kimberlite. © 2016, Pleiades Publishing, Ltd.
Ключевые слова:	Sr and Nd isotopes; Peridotite xenoliths; New results; Nd isotopes; Metasomatic alterations; Lithospheric mantle; Strontium; Carbonatites; Volcanic rocks; Silicates; Pipe linings; Isotopes; Kimberlite pipes;
Издано:	2016
Физ. характеристика:	с.1204-1207