Abstract—

Results of U–Pb dating of detrital zircon grains from diamond-bearing sandstones of the Middle Devonian Asyvvozh Formation in the Southern Timan are presented. It was established that the sandstones do not contain zircon grains younger than the Middle Riphean. The datings of 92 zircon grains fall in the interval of 1144 ± 36 to 3090 ± 19 Ma, and the difference between the depositional age of the Middle Devonian sandstones and the age of the youngest zircons is around 750 m.y. The main sources of terrigenous material during the deposition of the Asyvvozh sandstones were the crystalline complexes of the ancient basement of the East European Craton (the central regions of Volga–Uralia) and the complexes of accretionary orogens on the margins of Baltica. The presumably Cambrian kimberlites located within the Komi–Permyak and Sysola arches of the basement of the East European Craton could have been the sources of diamonds.

中文翻译：

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提曼南部Dzhezhimparma高地中泥盆纪Asyvvozh组中砂岩碎屑锆石的物源和U–Pb年龄

摘要—

给出了南部提曼南部中泥盆纪Asyvvozh组含金刚石砂岩碎屑锆石的U-Pb定年结果。已经确定，砂岩不包含比中里菲安更年轻的锆石颗粒。92个锆石粒的年龄介于1144±36至3090±19 Ma之间，中泥盆纪砂岩的沉积年龄与最年轻的锆石年龄之间的差值约为750 my。 Asyvvozh砂岩的沉积物是东欧克拉通（伏尔加河-乌拉利亚中部地区）的古代地下室的晶体复合物以及波罗的海边缘增生造山带的复合物。