| Zircon SHRIMP U-Pb dating of meta-diorite from the basement of the Songliao Basin and its geological significance |
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| 作者姓名： | WANG Ying ZHANG Fuqin ZHANG Dawei MIAO Laicheng LI Tiesheng XIE Hangqiang MENG Qingren LIU Dunyi |
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| 作者单位： | [1]Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing 100029, China [2]Exploration Management Department of Jilin Oilfield, Songyuan 138000, China [3]Exploration and Development Research Institute of Jilin Oilfield, Songyuan 138000, China; [4]Beijing SHRIMP Center, Institute of Geology, Chinese Academy of Geological Sciences, Beijing 100037, China |
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| 摘 要： | Located in the east portion of the North Orogenic Belt, the Songliao Basin is bounded by the Da Hinggan Mountains in the west, the Xiao Hinggan Mountains in the north, the Zhangguangcai Range in the east, and the North China Craton (NCC) in the south (Fig…
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| 关 键 词： | 锆石 SHRIMP定年 闪长岩 前寒武纪基岩 松辽盆地 |
| 文章编号： | 10.1007/s11434-006-2035-y |
| 收稿时间： | 2005-12-26 |
| 修稿时间： | 2005-12-262006-03-27 |
Zircon SHRIMP U-Pb dating of meta-diorite from the basement of the Songliao Basin and its geological significance |
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| WANG Ying ZHANG Fuqin ZHANG Dawei MIAO Laicheng LI Tiesheng XIE Hangqiang MENG Qingren LIU Dunyi.Zircon SHRIMP U-Pb dating of meta-diorite from the basement of the Songliao Basin and its geological significance[J].Chinese Science Bulletin,2006,51(15):1877-1883. |
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| Authors: | Ying Wang Fuqin Zhang Dawei Zhang Laicheng Miao Tiesheng Li Hangqiang Xie Qingren Meng Dunyi Liu |
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| Institution: | (1) Institute of Geology and Geophysics, Chinese Academy of Sciences, Beijing, 100029, China;(2) Exploration Management Department of Jilin Oilfield, Songyuan, 138000, China;(3) Exploration and Development Research Institute of Jilin Oilfield, Songyuan, 138000, China;(4) Beijing SHRIMP Center, Institute of Geology, Chinese Academy of Geological Sciences, Beijing, 100037, China |
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| Abstract: | The basement of the Songliao Basin mainly contains low-grade metamorphic rocks and granites. It has been long disputed whether
the basin has Precambrian metamorphic basement. This is a report of zircon SHRIMP U-Pb dating results of a meta-diorite sample,
which was taken from the Si-5 drilling hole in the southern portion of the Songliao Basin. The SHRIMP analyses indicate that
the meta-diorite with a weighted mean 207Pb/206Pb age of 1839±7 Ma (2σ, n = 8) was emplaced during Paleo-Proterozoic time. Additionally, the meta-diorite has old Nd model ages (T
DM1: 2999Ma; T
DM2: 2849Ma). These data suggest that the southern part of the Songliao Basin do possess Precambrian basement. |
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| Keywords: | zircon SHRIMP dating meta-diorite Precambrian basement Songliao Basin |
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