| 阿拉善地块南缘龙首山岩群及相关岩石的起源和归属——来自LA-ICP-MS锆石U-Pb年龄的制约 |
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| 引用本文： | 宫江华,张建新,于胜尧.阿拉善地块南缘龙首山岩群及相关岩石的起源和归属——来自LA-ICP-MS锆石U-Pb年龄的制约[J].岩石矿物学杂志,2011,30(5):795-818. |
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| 作者姓名： | 宫江华 张建新 于胜尧 |
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| 作者单位： | 中国地质科学院地质研究所,北京,100037 |
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| 基金项目： | 公益性行业科研专项经费资助项目(201111058) |
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| 摘 要： | 采用LA-ICP-MS方法对采自阿拉善地块南缘龙首山岩群及上覆的墩子沟群底部共6个不同类型的样品进行了锆石U-Pb测年,获得龙首山岩群上部变沉积岩中的碎屑锆石年龄集中在～2.01 Ga和～2.15 Ga,花岗质片麻岩的岩浆锆石年龄主要在2.04～2.17 Ga之间,变质重结晶(增生边)的年龄在1.89～1.93 Ga之...
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| 关 键 词： | LA-ICP-MS U-Pb年龄 龙首山岩群 阿拉善地块 |
| 收稿时间： | 2011/6/20 0:00:00 |
| 修稿时间： | 2011/7/7 0:00:00 |
The origin of Longshoushan Group and associated rocks in the southern part of the Alxa block: constraint from LA-ICP-MS U-Pb zircon dating |
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| GONG Jiang-hu,ZHANG Jian-xin and YU Sheng-yao.The origin of Longshoushan Group and associated rocks in the southern part of the Alxa block: constraint from LA-ICP-MS U-Pb zircon dating[J].Acta Petrologica Et Mineralogica,2011,30(5):795-818. |
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| Authors: | GONG Jiang-hu ZHANG Jian-xin and YU Sheng-yao |
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| Institution: | GONG Jiang-hua,ZHANG Jian-xin and YU Sheng-yao(Institute of Geology,Chinese Academy of Geological Sciences,Beijing 100037,China) |
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| Abstract: | The Longshoushan Group is a part of Precambrian metamorphic basement of the Alxa block.Its origin is particularly important for constraining the western boundary of the North China Craton(NCC)and understanding the evolutionary history of China's cratons.In this study,LA-ICP-MS U-Pb dating technique was used to determine the ages of different rocks from Longshoushan Group and Dunzigou Group.The analytical results of detrital zircon grains from the metasedimentary rock in the Longshoushan Group gave two age p... |
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| Keywords: | LA-ICP-MS U-Pb age Longshoushan Group Alxa block |
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