| Ages of Lueliang Group and Its Metamorphism in Mt.Lueliang Region,Shanxi Province：Evidence form Single Grain Zircon U—Pb Dating |
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| 引用本文： | 于津海,王德滋,等.Ages of Lueliang Group and Its Metamorphism in Mt.Lueliang Region,Shanxi Province：Evidence form Single Grain Zircon U—Pb Dating[J].中国地球化学学报,1997,16(2):170-177. |
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| 作者姓名： | 于津海 王德滋 |
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| 作者单位： | [1]DepartmentofEarthSciences,NanjingUniversity,Nanjing,210093 [2]DepartmentofEarthSciences,NanjingUniversit |
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| 摘 要： | Presented in this paper are the newly obtained grain zircon U-Pb ages of volcanic rocks of the Lueliang Goup and associated Kuanping granitic migmatitic gneiss in Shanxi Province.The zircon U-Pb ages of bimodal volcanic rocks(basalt and rhyolite)of the Upper Lueliang Group indicate that the rocks erupted at about 2100 Ma.So the Lueliang Group was formed during the Early Proterozoic.In the area studied the second-stage metamorphism experienced by the Lueliang Group is the dominant one which took place at about 1806 Ma.i.e.,during the late Early Proterozoic.
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| 关 键 词： | 火山岩 混合作用 山西 锆石铀－铅年龄 变质时代 早原生代 |
Ages of Lüliang Group and its metamorphism in Mt. Lüliang region, Shanxi Province: Evidence from single grain zircon U-Pb dating |
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| Yu Jinhai,Wang Dezi,Wang Xiyin,Li Huimin.Ages of Lüliang Group and its metamorphism in Mt. Lüliang region, Shanxi Province: Evidence from single grain zircon U-Pb dating[J].Chinese Journal of Geochemistry,1997,16(2):170-177. |
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| Authors: | Yu Jinhai Wang Dezi Wang Xiyin Li Huimin |
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| Institution: | (1) Department of Earth Sciences, Nanjing University, 210093 Nanjing;(2) Tianjin Institute of Geology and Mineral Resources, Chinese Academy of Geological Sciences, 300170 Tianjin |
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| Abstract: | Presented in this paper are the newly obtained grain zircon U-Pb ages of volcanic rocks of the Lüliang Group and associated
Kuanping granitic migmatitic gneiss in Shanxi Province. The zircon U-Pb ages of bimodal volcanic rocks (basalt and rhyolite)
of the Upper Lüliang Group indicate that the rocks erupted at about 2100 Ma. So the Lüliang Group was formed during the Early
Proterozoic. In the area studied the second-stage metamorphism experienced by the Lüliang Group is the dominant one which
took place at about 1806 Ma, i. e., during the late Early Proterozoic.
This paper was supported financially by the National Natural Science Foundation of China (49202024). |
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| Keywords: | Lüliang Group zircon U-Pb age Early Proterozoic metamorphic age |
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