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阿尔金山卓阿布拉克东南中晚奥陶世侵入岩地质特征及意义

The Geological Characteristics and Significance of Middle-late Ordavician Eon of Southeast Zhuoabulake,Aerjin Mountians
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摘要 据锆石SHRIMP U-Pb测年结果(460.2±7.3)^(460.2±7.3)Ma,首次将阿尔金山卓阿布拉克东南侵入岩体形成时代定为中晚奥陶世。岩石学及地球化学特征显示为岛弧型,说明南华—奥陶纪大洋壳在中晚奥陶世曾向南俯冲,岩体属I型花岗岩,具壳幔混合源成因特点。 据锆石SHRIMP U-Pb测年结果(460.2±7.3)<sup>460.2±7.3</sup>Ma,首次将阿尔金山卓阿布拉克东南侵入岩体形成时代定为中晚奥陶世。岩石学及地球化学特征显示为岛弧型,说明南华—奥陶纪大洋壳在中晚奥陶世曾向南俯冲,岩体属I型花岗岩,具壳幔混合源成因特点。
出处 《新疆地质》 CAS CSCD 北大核心 2012年第S1期25-30,共6页 Xinjiang Geology
基金 新疆阿尔金山卓阿布拉克地区(四幅)1:5万区域地质调查项目资助
关键词 阿尔金山 卓阿布拉克 中酸性岩体 锆石SHRIMPU-PB定年 中晚奥陶世 Aerjin Mountian Zhuoabulake Intermediate-acid intrusive rocks Zircon SHRIMP U-Pb dating Middle-late Ordavician
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