The first U–Pb (LA–ICP–MS) isotope dating of detrital zircons from quartzites of two strata of the Maksyutov metamorphic complex (Southern Urals) was performed. Zircon grains from the Galeevo quartzites are well rounded. The concordant zircon ages fall into the ranges of 529–594, 956–2144, and 2709–2781 Ma; the main age peaks are 544, 551, and 1491 Ma. Zircon grains from the Yumaguzino quartzites are idiomorphic and weakly rounded. The concordant zircon ages fall into the ranges of 497–640 and 957–1027 Ma, forming distinct age peaks of 514, 548, and 605 Ma. The U–Pb ages obtained and their comparison with similar data on the other sequences of the Southern Urals and the Caspian Sea Region indicate the Ordovician age of the protolith of the studied quartzites of the Maksyutov complex.

中文翻译：

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Maksyutov 变质杂岩（南乌拉尔）准陆源层序的古生代时代：碎屑锆石 U-Pb 测年结果

对 Maksyutov 变质杂岩体（南乌拉尔）两个地层石英岩碎屑锆石进行了第一次 U-Pb (LA-ICP-MS) 同位素测年。来自 Galeevo 石英岩的锆石颗粒非常圆润。锆石的一致年龄范围为529-594、956-2144和2709-2781 Ma；主要年龄峰值为 544、551 和 1491 Ma。来自 Yumaguzino 石英岩的锆石颗粒具有自形性和弱圆形。锆石的一致年龄范围为497-640和957-1027 Ma，形成明显的514、548和605 Ma年龄峰值。获得的 U-Pb 年龄及其与南乌拉尔和里海地区其他序列的类似数据的比较表明，所研究的 Maksyutov 复合体石英岩的原岩的奥陶纪年龄。