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首页> 外文期刊>Doklady Earth Sciences >The Polygenous-Polychronous Nature of Zircons and the Problem of the Age of the Barangulov Gabbro-Granite Complex
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The Polygenous-Polychronous Nature of Zircons and the Problem of the Age of the Barangulov Gabbro-Granite Complex

机译：锆石的多时同步性质和Barangulov Gabbro-花岗岩复合体的年龄问题

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摘要

The first precision U-Pb (SIMS SHRIMP II) zircon datings of gabbros (728 + 8 Ma) and granites (723 + 10 Ma) have been reported for the Barangulov gabbro— granite complex located in the northern Uraltau zone of the southern Urals. The temporal evolution of the magma chamber has been traced based on zircons. The available data suggest that gabbros and granites of the study region are dated at 725 ± 5 Ma. Based on these data, metasedimentary rocks of the Mazarin and Arvyak formations, which host the Barangulov gab-bro-granite complex, are older than 725 Ma. This estimate supports the correlation of metamorphic rocks of the Mazarin and Arvyak formations of the northern Uraltau zone with rocks of the Karatau Group in Riphean type sections of the Bashkirian anticlinorium, southern Urals.
机译：据报道，位于乌拉尔南部南部的乌拉陶地区的Barangulov gabbro-花岗岩复合体中，长辉岩（728 + 8 Ma）和花岗岩（723 + 10 Ma）的第一个精密U-Pb（SIMS SHRIMP II）锆石测年。基于锆石追踪了岩浆室的时间演化。现有数据表明该研究区的辉长岩和花岗岩年代为725±5 Ma。根据这些数据，包含Barangulov杂岩-花岗岩-花岗岩复合体的Mazarin和Arvyak地层的沉积沉积岩年龄大于725 Ma。该估计值支持了北部乌拉尔陶地区的Mazarin和Arvyak地层的变质岩与南部乌拉尔邦Bashkirian防潮层的Riphean型剖面中Karatau群的岩石的相关性。

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