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首页> 外文期刊>Arabian Journal for Science and Engineering. Section A, Sciences >Detrital Zircon U–Pb Geochronology as an Indicator of Provenance in the Zhiluo Formation of theWestern Ordos Basin, China
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Detrital Zircon U–Pb Geochronology as an Indicator of Provenance in the Zhiluo Formation of theWestern Ordos Basin, China

机译：DEDRITAL ZIRCON U-PB地理学作为ZHILUO BOSTOS盆地ZHILUO形成的出处指标

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摘要

Detrital zircon grains were collected from six samples of sedimentary rock from the Middle Jurassic Zhiluo Formation inthe western Ordos Basin of China. U–Pb isotopic geochronology data were measured and used to assess the provenanceand directions of sediment transport of these grains. Five age populations were recognised amongst the U–Pb age spectra:2700–2034 Ma, 1999–1426 Ma, 1296–636 Ma, 556–323 Ma, and 315–207 Ma. Each of these groups corresponds to one orseveral potential sediment sources around the western Ordos Basin. Based on these data and the spatial distribution of thesix collected samples, we interpret that the material of the Middle Jurassic Zhiluo Formation in the western Ordos Basin wasmainly derived from the northern margin of the North China Craton and the Qilian Orogenic Belt. In addition, the easternmargin of the Alxa Block contributed as a sediment source for certain regions. Detritus was transported via two major supplydirections to the western Ordos Basin, and this basin was connected to the Hexi Corridor during the Middle Jurassic. Inconclusion, our results are consistent with the closure of Palaeo-ocean and the formation of the orogenic belt.
机译：从中间侏罗纪志诺形成的六个沉积岩样品中收集了碎屑锆石颗粒中国西部鄂尔多斯盆地。测量U-Pb同位素地质学历数据并用于评估出处和这些谷物的沉积物传输的方向。 U-PB年龄谱之间，五岁的人群被认可：2700-2034 MA，1999-1426 MA，1296-636 MA，556-323 MA和315-207 MA。这些组中的每一个对应于一个或西部鄂尔多斯盆地周围的几个潜在沉积物来源。基于这些数据和空间分布六种收集的样品，我们解释了西部鄂尔多斯盆地中侏罗纪志诺形成的材料是主要来自华北克拉顿和祁连造山带的北边缘。另外，东方ALXA块的裕度贡献为某些地区的沉积物来源。 Detritus通过两个主要供应运输向西鄂尔多斯盆地的方向，这个盆地在侏罗纪期间连接到河西走廊。在结论，我们的结果与帕拉诺 - 海洋的关闭和造口带的形成一致。

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