| 青海都兰东北部哈莉哈德山花岗片麻岩LA-ICP-MS锆石U-Pb年龄及构造意义 |
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| 引用本文： | 许娅玲,巴金,王勤燕,张璐,王新宇,陈能松.青海都兰东北部哈莉哈德山花岗片麻岩LA-ICP-MS锆石U-Pb年龄及构造意义[J].中国区域地质,2011(7):1037-1042. |
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| 作者姓名： | 许娅玲 巴金 王勤燕 张璐 王新宇 陈能松 |
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| 作者单位： | [1]中国地质大学（武汉）地球科学学院,湖北武汉430074 [2]广西壮族自治区地质勘查总院,广西南宁530023 [3]中国地质大学（武汉）／地质过程与矿产资源国家重点实验室,湖北武汉430074 |
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| 基金项目： | 国家自然科学基金项目《全吉克拉通残片基底早元古代片麻状花岗岩成因背景和基底地壳演化》（批准号：40972042）; 教育部科技重点项目《柴北前寒武纪基底群的变质地质学与构造属性研究》（编号：104039） |
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| 摘 要： | 青海都兰东北部哈莉哈德山花岗片麻岩原岩为具有S-型花岗岩特征的酸性侵入岩。来自该片麻岩的20粒锆石的LA-ICP-MS U-Pb年龄测定表明,该片麻岩的原岩花岗岩岩浆于约950Ma侵位结晶,岩浆物源源区存在中—新元古代的物质成分。正确甄别哈莉哈德山花岗片麻岩的变质围岩是否隶属于全吉地块的达肯大坂岩群,是理解全吉地块与柴达木地块在新元古代时期构造演化关系的关键。
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| 关 键 词： | 全吉地块 柴达木地块 花岗片麻岩 LA-ICP-MS锆石U-Pb定年 新元古代构造演化 |
LA-ICP-MS zircon U-Pb age of the Halihadeshan granite-gneiss in northeastern Dulan,Qinghai,and its tectonic implications |
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| XU Ya-ling,BA Jin,WANG Qin-yan,ZHANG Lu,WANG Xin-yu,CHEN Neng-song.LA-ICP-MS zircon U-Pb age of the Halihadeshan granite-gneiss in northeastern Dulan,Qinghai,and its tectonic implications[J].Regional Geology of China,2011(7):1037-1042. |
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| Authors: | XU Ya-ling BA Jin WANG Qin-yan ZHANG Lu WANG Xin-yu CHEN Neng-song |
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| Institution: | 1,3 1.Faculty of Earth Sciences,China University of Geosciences,Wuhan 430074,Hubei,China; 2.Guangxi Institute of Geological Survey and Exploration,Nanning 530023,Guangxi,China; 3.State Key Laboratory of Geological Processes and Mineral Resources/China University of Geosciences, Wuhan 430074,Hubei,China |
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| Abstract: | The Halihadeshan granite-gneiss in northeast Dulan County of Qinghai Province has a protolith of S-type granites.LA-ICP-MS dating of 20 grains of zircon from this gneiss shows that the protolith magma was composed of Mesoproterozoic and Neoproterozoic materials,and that the protolith magma was emplaced and crystallized at ~950 Ma.The correct judgment as to whether the metamorphic wall rocks of the Halihadeshan granite-gneiss belong to Dakendaban Group of Quanji massif seems to be the key to understanding the tectonic evolution relationship between the Quanji massif and Qaidam block in Neoproterozoic period. |
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| Keywords: | Quanji massif Qaidam block granite-gneiss LA-ICP-MS zircon U-Pb dating Neoproterozoic tectonic evolution |
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