| 青海祁漫塔格虎头崖多金属矿区岩体热年代学研究 |
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| 引用本文： | 瞿泓滢,丰成友,裴荣富,何书跃,李大新,刘建楠,王辉,周建厚.青海祁漫塔格虎头崖多金属矿区岩体热年代学研究[J].地质学报,2015,89(3):498-509. |
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| 作者姓名： | 瞿泓滢 丰成友 裴荣富 何书跃 李大新 刘建楠 王辉 周建厚 |
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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. 青海省第三地质矿产勘查院,西宁,810029 |
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| 基金项目： | 青海省地质勘查基金项目，国土资源部公益性行业科研专项经费项目，中国地质调查局地质调查项目，中国地质调查局高层次地质人才培养计划，青年地质英才计划(编号 201112)资助的成果 |
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| 摘 要： | 虎头崖铜铅锌多金属矿床是青海祁漫塔格地区典型的与印支期岩浆侵入活动有关的接触交代矿床,矿区内出露多个不同时代的含碳酸盐地层,金属成矿元素组合复杂,中酸性侵入岩产状多变、岩性多样,成矿岩体及其成矿能力的判别一直制约着该矿区及区域的找矿勘查工作。本文基于详细的野外地质调查,开展了岩体热年代学和岩石地球化学研究。利用LA-MC-ICP-MS锆石U-Pb法,获得二长花岗岩体的年龄为230.3±3.7 Ma(n=13,MSWD=1.4);利用40 Ar-39 Ar法,获得二长花岗岩中黑云母和斜长石矿物的坪年龄分别为229.6±2.3 Ma和219.3±1.8Ma,厘定成岩时代为印支期。对二长花岗岩中不同矿物的岩体冷速率计算结果表明,虎头崖矿区二长花岗岩冷速率相对较快,其热效应较大,具有较大的成矿潜力。二长花岗岩为高钾钙碱性系列岩石,源于古老地壳物质的深熔或重熔,并可能有幔源物质的加入。
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| 关 键 词： | 岩体热年代学 地球化学 锆石U-Pb测年 40 Ar-39 Ar同位素测年 虎头崖 祁漫塔格 东昆仑 |
| 收稿时间： | 2014/12/13 0:00:00 |
| 修稿时间： | 2015/1/19 0:00:00 |
Thermochronology of Hutouya Skarn-Type Copper-Lead-Zinc Polymetallic Ore District in the Qimantage Area Qinghai Province |
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| QU Hongying,FENG Chengyou,PEI Rongfu,HE Shuyue,LI Daxin,LIU Jiannan,WANG Hui and ZHOU Jianhou.Thermochronology of Hutouya Skarn-Type Copper-Lead-Zinc Polymetallic Ore District in the Qimantage Area Qinghai Province[J].Acta Geologica Sinica,2015,89(3):498-509. |
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| Authors: | QU Hongying FENG Chengyou PEI Rongfu HE Shuyue LI Daxin LIU Jiannan WANG Hui and ZHOU Jianhou |
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| Institution: | MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, 100037;MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, 100037;MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, 100037;The Number 3 Institute of Geology and Mineral Resources, Xining, 810029;MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, 100037;MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, 100037;MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, 100037;MLR Key Laboratory of Metallogeny and Mineral Assessment, Institute of Mineral Resources, Chinese Academy of Geological Sciences, Beijing, 100037 |
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| Abstract: | |
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| Keywords: | Rock body thermochronology Geochemistry U-Pb dating of zircon 40 Ar-39 Ar dating Hutouya Qimantage eastern Kunlun |
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