北祁连山西段螯油沟蛇绿岩SHRIMP分析结果及其地质意义

张招崇 周美付 等. 北祁连山西段螯油沟蛇绿岩SHRIMP分析结果及其地质意义[J]. 岩石学报, 2001, 17(2): 222-226.
引用本文: 张招崇 周美付 等. 北祁连山西段螯油沟蛇绿岩SHRIMP分析结果及其地质意义[J]. 岩石学报, 2001, 17(2): 222-226.
ZHANG ZhaoChong 1,ZHOU MeiFu 2,Paul T ROBINSON 3,MAO JingWen 4,YANG JianMin 4 and ZUO GuoChao 51. Institute of Geology,Chinese Academy of Geological Sciences,Beijing,100037,China, 2. Department of Earth Sciences,The University of Hongkong. SHRIMP dating of the Aoyougou ophiolite in the west sector of the north Qilian Mountains and its geological significance.[J]. Acta Petrologica Sinica, 2001, 17(2): 222-226.
Citation: ZHANG ZhaoChong 1,ZHOU MeiFu 2,Paul T ROBINSON 3,MAO JingWen 4,YANG JianMin 4 and ZUO GuoChao 51. Institute of Geology,Chinese Academy of Geological Sciences,Beijing,100037,China, 2. Department of Earth Sciences,The University of Hongkong. SHRIMP dating of the Aoyougou ophiolite in the west sector of the north Qilian Mountains and its geological significance.[J]. Acta Petrologica Sinica, 2001, 17(2): 222-226.

北祁连山西段螯油沟蛇绿岩SHRIMP分析结果及其地质意义

  • 基金项目:

    本文为由国家计委国土司(JG9471902)和国家重点基础研究发展规划项目(G1999043205)的部分成果.

SHRIMP dating of the Aoyougou ophiolite in the west sector of the north Qilian Mountains and its geological significance.

  • 本文通过对北祁连山西段熬油蛇绿岩中辉绿岩岩墙的锆石SHRIMP法年龄 的测定,确定出熬油的沟蛇绿岩形成于中元古代早期(约1777Ma),这是迄今为止我国发现的最古老的蛇绿岩。该年龄测定的结果还暗示了本区在1466Ma和507Ma各有一次地质事件,前者可能代表了中元古代早期的洋盆闭合的下限年龄,后者代表一次加里东期区域变质事件,并且本区可能还存在未出露的新太古结晶基底(2561Ma)。
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出版历程
修回日期:  2000-10-04
刊出日期:  2001-05-31

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