| 庐山“星子变质核杂岩”中伟晶岩锆石U-Pb年龄及其地质意义 |
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| 引用本文： | 李武显,周新民,李献华,谢国刚,李均辉. 庐山“星子变质核杂岩”中伟晶岩锆石U-Pb年龄及其地质意义[J]. 地球科学, 2001, 26(5): 491-495 |
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| 作者姓名： | 李武显 周新民 李献华 谢国刚 李均辉 |
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| 作者单位： | 1.中国科学院广州地球化学研究所, 广东广州 510640 |
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| 基金项目： | 国家自然科学基金项目 (No.49672 10 4,No .49632 0 80 ),中国科学院知识创新工程项目 (KZCX2 -10 2 ) |
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| 摘 要： | 赣北庐山地区出露的“星子变质核杂岩”是中国东南部迄今为止发现的较为典型的科迪勒拉型变质核杂岩之一.该变质核杂岩核部见有大量的, 与拆离断层同时形成并侵入于构造弱带的伟晶岩脉.通过锆石U-Pb法定年, 获得伟晶岩的年龄为(127±2)Ma, 该年龄代表了庐山“星子变质核杂岩”的隆升年龄, 并得到其他地质证据的支持.还讨论了形成变质核杂岩的岩石圈伸展作用与同时期中国东南部大规模岩浆活动的时空关系及其可能的联系.
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| 关 键 词： | 隆升年龄 星子变质核杂岩 伟晶岩 庐山 |
| 文章编号： | 1000-2383(2001)05-0491-05 |
| 收稿时间： | 2000-12-25 |
ZIRCON U-Pb DATING OF PEGMATITE FROM XINGZI METAMORPHIC CORE COMPLEX OF LUSHAN MOUNTAIN AND ITS GEOLOGICAL IMPLICATION |
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| Li Wuxian ,,Zhou Xinmin ,Li Xianhua ,Xie Guogang ,Li Junhui. ZIRCON U-Pb DATING OF PEGMATITE FROM XINGZI METAMORPHIC CORE COMPLEX OF LUSHAN MOUNTAIN AND ITS GEOLOGICAL IMPLICATION[J]. Earth Science-Journal of China University of Geosciences, 2001, 26(5): 491-495 |
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| Authors: | Li Wuxian Zhou Xinmin Li Xianhua Xie Guogang Li Junhui |
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| Affiliation: | Li Wuxian 1,2,Zhou Xinmin 2,Li Xianhua 1,Xie Guogang 3,Li Junhui 3 |
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| Abstract: | Xingzi metamorphic core complex" exposed in the Lushan mountain of northern Jiangxi Province is a typical Cordilleran-type metamorphic core complex so far discovered in southeastern China. Numerous pegmatites intruded in the structural weak zone were present in the core of "Xingzi metamorphic core complex", which is contemporaneous with the detachment fault. Zircon U-Pb dating age of the pegmatite is 130 Ma, representing the uplift age of the complex, which is supported by other geological evidences. The possible spatial and temporal links, furthermore, between the complex formation and contemporary extensive Late Mesozoic magmatism in southeastern China are discussed in this paper. |
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| Keywords: | uplift age Xingzi metamorphic core complex pegmatite Lushan mountain. |
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