Zobrazeno 1 - 10
of 50
pro vyhledávání: '"I. L. Nedosekova"'
Publikováno v:
Геодинамика и тектонофизика, Vol 13, Iss 4 (2022)
The Ilmeno-Vishnevogorsky miaskite-phenite-carbonatite complex (IVС), located in the Urals folded region, is a representative of "linear type" carbonatite complexes, with which Nb-Zr deposits are associated. The ore potential of linear carbonatite c
Externí odkaz:
https://doaj.org/article/869aefd56fad4c62b6060f4345366911
Autor:
I. L. Nedosekova, V. A. Koroteev, T. B. Bayanova, P. A. Serov, V. I. Popova, M. V. Chervyakovskaya
Publikováno v:
Литосфера, Vol 20, Iss 4, Pp 486-498 (2020)
Research subject. In this research, we carried out Sm-Nd- и Rb-Sr-dating of pyrochlore carbonatite from the Vishnevogorsky niobium deposit, Ilmeno-Vishnevogorsky Alkaline Complex, Southern Urals. IVC is located in the Ural fold region and is a carbo
Externí odkaz:
https://doaj.org/article/ad5bf4e81a414042822cb66466191fc1
Autor:
I. L. Nedosekova, V. A. Koroteev, B. V. Belyatsky, V. V. Sharygin, Е. N. Lepechinа, S. V. Pribavkin
Publikováno v:
Литосфера, Vol 18, Iss 5A, Pp 90-101 (2020)
The article covers the U-Pb dating of minerals belonging to the pyrochlore group from the rare-metal ore deposits of Ilmeny-Vishnevogorsky carbonatite-miaskite complex (South Urals). Individual pyrochlore crystals were dated through a new technique o
Externí odkaz:
https://doaj.org/article/e06d8ef9fe5d4670a6d2fc6095e3a45f
Publikováno v:
Литосфера, Vol 0, Iss 2, Pp 60-77 (2017)
The ore specialization of carbonatite complexes of Urals-Timan region has been established: niobium and rare earth-niobium - for the Urals’ carbonatite complexes, the rare-earth - for carbonatites of Timan. The carbonatites of Il'menо-Vishnevogors
Externí odkaz:
https://doaj.org/article/0361d8cf006a421a9e14ec4056654f74
Autor:
Oleg Petrov, Boris Belyatsky, I. L. Nedosekova, Sergey Shevchenko, N. V. Rodionov, A. V. Antonov, Sergey Sergeev, E. N. Lepekhina
Publikováno v:
Doklady Earth Sciences. 481:1079-1085
The results of local U–Th–Pb-SIMS-SHRIMP-II analysis of the collection of pyrochlores from Nb rare-metal deposits of the Ilmeny–Vishnevogorsky alkaline complex are discussed. Independently of the chemical composition, the host rocks, and the st
Publikováno v:
Doklady Earth Sciences. 480:773-777
The results of study of the Nd and Sr isotope compositions of the Nb ore minerals (pyrochlore and aeschynite groups) and rocks from the Ilmenogorsk–Vishnevogorsk and Buldym carbonatite complexes of the Ural Fold Belt are presented. It has been esta
Publikováno v:
Литосфера, Vol 0, Iss 2, Pp 60-77 (2017)
The ore specialization of carbonatite complexes of Urals-Timan region has been established: niobium and rare earth-niobium - for the Urals’ carbonatite complexes, the rare-earth - for carbonatites of Timan. The carbonatites of Il'menо-Vishnevogors
Publikováno v:
Russian Geology and Geophysics. 57:891-906
We present results of investigation of the trace-element (REE, HFSE) and Hf isotope compositions and U–Pb age of single zircons crystallized from alkaline-carbonatite magmas of the Ilmeny–Vishnevogorsky complex (IVC) (Urals, Russia). It has been
Publikováno v:
Doklady Earth Sciences. 461:384-389
384 The methods of local analysis in the study of the isotope composition and isomorphic admixture in zir� con stimulated treatment of this mineral as a widely applied instrument for rock dating, as well as for origin of substance sources and geoch
Autor:
I. L. Nedosekova, B. V. Belyatsky
Publikováno v:
Doklady Earth Sciences. 446:1071-1076
) ofmiaskites, fenites, and carbonatites with REE–Zr–Nb mineralization located in the Uralian foldbelt.Although the IVC is well studied, a number of important genesis and geochronological problems are currently debatable. Thus, because of the wid