| 云南瓦渣钨矿区老君山花岗岩体的SHRIMP锆石U-Pb定年、地球化学特征及成因探讨 |
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| 引用本文： | 冯佳睿,毛景文,裴荣富,周振华,杨宗喜.云南瓦渣钨矿区老君山花岗岩体的SHRIMP锆石U-Pb定年、地球化学特征及成因探讨[J].岩石学报,2010,26(3):845-857. |
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| 作者姓名： | 冯佳睿 毛景文 裴荣富 周振华 杨宗喜 |
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| 作者单位： | 1. 中国地质科学院矿产资源研究所,国土资源部成矿作用与资源评价重点实验室,北京,100037
2. 中国地质调查局发展研究中心,北京,100037 |
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| 基金项目： | 中央级公益性科研院所基本科研业务费专项资金(K0922)、国家重点基础研究课题(2007CB411405和2007CB411407)及国家自然科学重点基金(40930419)联合资助 |
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| 摘 要： | 云南省瓦渣钨矿区位于老君山花岗岩体的东北接触带,属于滇东南-桂西白垩纪钨锡多金属成矿区中的组成部分。该矿床与矿区西部大面积分布的老君山第一期中粗粒二云二长花岗岩在时间和成因上有着密切联系。本文通过SHRIMP锆石U-Pb测年、岩石主量元素、微量元素和稀土元素的系统研究,进而探讨该花岗岩的形成年龄和动力学背景、岩石物质来源以及形成温度和压力。研究表明,与瓦渣钨矿床有关的中粗粒二云二长花岗岩属于高钾钙碱性岩系,为强过铝质S型花岗岩。岩体形成时代为83.3±1.5Ma,属于晚白垩世,形成于岩石圈伸展环境,其源岩为富粘土的泥质来源,其形成温度为875～900℃,压力约为7×108Pa,相当于深度为26km。
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| 关 键 词： | 地球化学 花岗岩 锆石U-Pb年龄 强过铝质 云南瓦渣 |
| 收稿时间： | 1/6/2010 12:00:00 AM |
| 修稿时间： | 2010/2/23 0:00:00 |
SHRIMP zircon U-Pb dating and geochemical characteristics of Laojunshan granite intrusion from the Wazha tungsten deposit, Yunnan Province and their implications for petrogenesis |
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| Feng JR,Mao JW,Pei RF,Zhou ZH and Yang ZX.SHRIMP zircon U-Pb dating and geochemical characteristics of Laojunshan granite intrusion from the Wazha tungsten deposit, Yunnan Province and their implications for petrogenesis[J].Acta Petrologica Sinica,2010,26(3):845-857. |
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| Authors: | Feng JR Mao JW Pei RF Zhou ZH and Yang ZX |
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| Institution: | MLR Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China;MLR Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China;MLR Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China;MLR Key Laboratory of Metallogeny and Mineral Assessment,Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing 100037, China;Development and Research Center, China Geological Survey, Beijing 100037, China |
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| Abstract: | |
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| Keywords: | Geochemistry Granite Zircon U-Pb dating Strongly-peraluminous Wazha in Yunnan |
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