New U-Pb isotopic data on the age of metamorphic and igneous rocks of the western margin of the Selenga-Stanovoi orogenic belt

Vakh, A. S.; Avchenko, O. V.; Goryachev, N. A.; Gvozdev, V. I.; Kiselev, V. F.; Хомич, В. Г.; Yang, Yanchen; Ye, Songqing; Zhang, Guobin

doi:10.1134/s1028334x1306007x

Cited by 3 publications

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“…The isotopic age of zircons from the gneissic granodiorites and granites, enclosing the main ore-metasomatic zone of Berezitovoe deposit, is 379.0 AE 1.1 Ma (Vakh et al, 2011(Vakh et al, , 2013 suggesting emplacement during Paleozoic (Vol'sky et al, 1979).…”

Section: Discussionmentioning

confidence: 98%

“…Recent studies have better constrained the time of emplacement of different magmatic complexes in the Sergachi zone (Buchko et al, 2006(Buchko et al, , 2008, Haikta node (Strikha et al, 2000), Berezitovoe ore field (Vakh et al, 2011(Vakh et al, , 2013, as well as the metasomatic formations of Berezitovoe deposit Mel'nikov et al, 2009).…”

Section: Discussionmentioning

confidence: 98%

“…Zircon grains from the coarse-porphyry-like granites of Haikta massif are characterized by translucent, long-prismatic and well faceted bipyramidal crystals with well defined oscillatory zoning. These grains yield U-Pb age of 137.62 AE 0.67 Ma indicating early Cretaceous event (Vakh et al, 2013). Several hydrothermal ore deposits have been recognized from Haikta, including the Ilichinskoe (Mo), Berezitovoe (Au-Pb), and Kremnistoe (U-Mo) deposits.…”

Section: Discussionmentioning

confidence: 99%

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The Berezitovoe gold-polymetallic deposit (Upper Amur region, Russia): Structure, mineralogy and genetic aspects

Vakh

Хомич

Santosh

2016

Geoscience Frontiers

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a b s t r a c tThe Berezitovoe deposit in the Sergachi volcano-plutonic and metallogenic belt preserves evidence for polymetallic mineralization of multiple stages. The steeply dipping garnet-tourmaline-muscovite-quartz metasomatites (with K-Ar ages of 132 AE 2.9 and 127 AE 4.4 Ma) carry two distinct stages of mineralization developed at different times: (1) polymetallic mineralization and (2) gold-quartz. The deposit is located within Paleozoic gneissose granitoids of the Pikansky complex (dated as 379 AE 1.1 Ma by zircon U-Pb method) intruded by early Cretaceous porphyry-like granites of the Haikta pluton (dated as 137 AE 0.67 Ma by zircon U-Pb method) and late Cretaceous dikes of porphyrites, porphyries, and lamprophyres. Evidence suggests the action of late gold-bearing hydrothermal fluids on the early polymetallic ores and the selective mobilization of some elements from these lead to redeposition together with complex sulphosalts. Ó 2015, China University of Geosciences (Beijing) and Peking University. Production and hosting by Elsevier B.V. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).

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Section: Discussionmentioning

confidence: 98%