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| 新疆西天山乌孙山地区石英正长斑岩形成时代及其地质意义 | |
| 引用本文： | 程春华,张芳荣,余泉. 新疆西天山乌孙山地区石英正长斑岩形成时代及其地质意义[J]. 火山地质与矿产, 2010, 0(4): 257-263 |
| 作者姓名： | 程春华 张芳荣 余泉 |
| 作者单位： | [1]中国地质大学,武汉430074 [2]江西省地质调查研究院,南昌330030 |
| 基金项目： | 新疆伊犁地区乌孙山-带战略性矿产远景调查（项目编号：ZYZXKD2006-07）资助. 本文资料来源于1：5万恰吉山隘幅地质矿产调查及周边矿产调查资料,是集体劳动的结晶,参加野外工作的人员还有凌联海、魏源、杨永革及新疆地凋院朱志新等.LA-ICP-MS锆石u-Pb定年过程中得到了南京大学王孝磊副教授,谢磊、王丽娟博士、武兵老师的热情帮助,楼法生教授级高级工程师在成文过程中提出了宝贵的修改意见,在此深表谢忱 |
| 摘 要： | 新疆西天山乌孙山地区科库萨依系列石英正长斑岩呈岩瘤状、岩脉状产出,侵入于早石炭世大哈拉军山组地层中。其LA-ICP-MS锆石U-Pb年龄为314.4±3.7 Ma（MSWD=0.51）,属石炭世晚期,为本区岩浆活动及构造环境探讨提供年代学依据。 |
| 关 键 词： | 形成时代 石英正长斑岩 乌孙山地区 新疆 |
Formation age of quartz syenite porphyry from Wusun mountain region, West Tianshan, Xinjiang, and its geological significance |
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| CHENG Chun-hua,ZHANG Fang-rong,YU Quan. Formation age of quartz syenite porphyry from Wusun mountain region, West Tianshan, Xinjiang, and its geological significance[J]. Resources Survey & Environment, 2010, 0(4): 257-263 | |
| Authors: | CHENG Chun-hua ZHANG Fang-rong YU Quan |
| Affiliation: | 1. The Geological University of China, Wuhan 430074 China;2. Jiangzi Institute of Geological Survey, Nanchang 330030, China) |
| Abstract: | Kekusayi series of quartz syenite porphyries in Wusun mountain region, West Tiansban, Xinjiang, which produced as warty and dike type, is mainly intruded into the strata of early Carboniferous, Dahalajunshan formation. U-Pb isotope dating zircons from Kekusayi quartz syenite porphyry are determined by LA-ICP-MS and yield a zircon U-Pb age of 314.4 ±3.7Ma （MSWD=0.51）, which indicates that the formation age should be late Carboniferous. This paper provides a geochronology evidence for discussing the magmatism and tectonic-environment of this region. |
| Keywords: | formation age quartz syenite porphyry Wusun Mountain region Xin- jiang |
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