Zobrazeno 1 - 10
of 20
pro vyhledávání: '"I. G. Barash"'
Publikováno v:
Russian Geology and Geophysics. 60:1229-1246
—A continuous solid-solution series between the end-members eskolaite (98 wt.% Cr2O3) and karelianite (93 wt.% V2O3) has been revealed in Cr–V-bearing rocks of the Slyudyanka metamorphic complex. Chromium and vanadium oxides crystallized as karel
Publikováno v:
Геология и геофизика. 60:159-178
—We present data on the mineral and geochemical compositions of metasedimentary Mn-bearing rocks of the Itantsa Formation of the Ikat terrane. According to the mineral composition, the studied quartz–spessartine rocks of the formation are referre
Autor:
Evgeny V. Sklyarov, Z. F. Ushchapovskaya, L. F. Suvorova, L. Z. Reznitsky, I. G. Barash, Thomas Armbruster, Georgia Cametti
Publikováno v:
Geology of Ore Deposits. 60:607-615
A new mineral was discovered in Cr–V-bearing marbles of the Sludyanka Complex from the Pereval marble quarry, Sludyanka district, southern Baikal region, Russia. It was named vanadio-pargasite as vanadium-bearing analog of pargasite according to th
Publikováno v:
Stratigraphy and Geological Correlation. 26:489-513
The results of U—Th—Pb (LA-ICP-MS) geochronological studies of detrital zircons from terrigenous rocks of the Dzhida terrane of the Central Asian Fold Belt (CAFB) are presented. The data obtained allow us to distinguish the following age maxima (
Publikováno v:
Doklady Earth Sciences. 479:397-400
Mannardite was found in a type of Cr–V–bearing metamorphic rock of the Slyudyanka complex (South Baikal region). The X-ray data of the mineral are recalculated for three scenarios taking into account possible variations of the mannardite structur
Publikováno v:
Geology of Ore Deposits. 59:707-719
The paper presents data on accessory rutile in Cr–V-rich metamorphic rocks of the Slyudyanka crystalline (granulite) complex in the southern Baikal region. The geochemical features of the studied rutile are unique in combining isomorphic admixtures
Autor:
E. F. Letnikova, Youjueen Li, Y. Zhiqlang, S. I. Shkolnik, I. G. Barash, I.A. Vishnevskaya, L. Z. Reznitsky, Hyaiyu He, Alexander V. Ivanov
Publikováno v:
Russian Geology and Geophysics. 58:1032-1044
Felsic rocks of the Khamsara terrane in Tyva (southern Siberia) have been studied in terms of major- and trace-element compositions and U–Pb isotope geochronology. The Khamsara Formation rocks have compositions of A2-subtype within-plate anorogenic
Autor:
A. V. Maslov, E. F. Letnikova, I. G. Barash, M. D. Buyantuev, S. I. Shkolnik, L. Z. Reznitskii
Publikováno v:
Doklady Earth Sciences. 475:739-742
The results of geochemical, mineralogical, and isotope (U–Pb and Sm–Nd) studies of metasedimentary manganese-bearing rocks from the Itantsa Formation of the Ikat terrane are presented. It is found that the carbonate-effusive-shale complex of the
Autor:
I. G. Barash, S. V. Kanakin, Eugene V. Sklyarov, N. S. Karmanov, L. F. Suvorova, L. Z. Reznitsky
Publikováno v:
Russian Geology and Geophysics. 57:1716-1727
Cr-V-bearing rocks of the Sludyanka metamorphic complex in the Southern Baikal area contain accessory niobian rutile with Nb contents unusually high for metamorphic rocks (10–12 to 20–25 wt.% Nb2O5, or, occasionally, up to 36–37 wt.%). Incorpor
Publikováno v:
Doklady Earth Sciences. 461:356-359