宋安江, 朱志新, 石莹, 李生虎. 2006: 东天山阿其克库都克断裂西段土古土布拉克组锆石SHRIMP U-Pb测年. 地质通报, 25(8): 953-956.
    引用本文: 宋安江, 朱志新, 石莹, 李生虎. 2006: 东天山阿其克库都克断裂西段土古土布拉克组锆石SHRIMP U-Pb测年. 地质通报, 25(8): 953-956.
    2006: SHRIMP U-Pb dating of zircons from the Tugutu Bulak Formation in the western segment of the Aqqikkuduk fault in the East Tianshan, Xinjiang, China. Geological Bulletin of China, 25(8): 953-956.
    Citation: 2006: SHRIMP U-Pb dating of zircons from the Tugutu Bulak Formation in the western segment of the Aqqikkuduk fault in the East Tianshan, Xinjiang, China. Geological Bulletin of China, 25(8): 953-956.

    东天山阿其克库都克断裂西段土古土布拉克组锆石SHRIMP U-Pb测年

    SHRIMP U-Pb dating of zircons from the Tugutu Bulak Formation in the western segment of the Aqqikkuduk fault in the East Tianshan, Xinjiang, China

    • 摘要: 1∶5万区域地质调查发现,在中天山隆起带北部黑龙峰一带的阿其克库都克断裂带及其两侧,出露一套火山碎屑岩夹正常沉积岩,含有海百合茎和腕足化石碎片。对其中含砾岩屑砂岩中花岗闪长斑岩砾石的锆石进行SHRIMPU-Pb定年,获得206Pb/238U加权平均年龄为314Ma±4.2Ma(n=9,MSWD=1.8),表明该套地层不老于314Ma±4.2Ma,应归为晚石炭世土古土布拉克组。这一发现表明,至少自石炭纪以来,阿其克库都克断裂在该区不具有构造分区的意义。

       

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