| 西藏多龙超大型铜(金)矿集区成矿模式与找矿方向 |
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| 引用本文： | 王勤,唐菊兴,陈毓川,侯俊富,李彦波.西藏多龙超大型铜(金)矿集区成矿模式与找矿方向[J].岩石学报,2019,35(3):879-896. |
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| 作者姓名： | 王勤 唐菊兴 陈毓川 侯俊富 李彦波 |
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| 作者单位： | 成都理工大学地球科学学院, 成都 610059,中国地质科学院矿产资源研究所, 自然资源部成矿作用与资源评价重点实验室, 北京 100037,中国地质科学院, 北京 100037,中铝西藏矿业有限公司, 拉萨 850000,西藏地质矿产勘查开发局第五地质大队, 格尔木 816000 |
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| 基金项目： | 本文受国家重点研发计划（2018YFC0604101、2018YFC0604106）、中国地质科学院院基本科研业务费（YYWF201608）、国家自然科学基金项目（41402178）、中国地质调查局二级项目（DD20160026）和成都理工大学教师发展科研启动基金（10912-2019KYQD-07370）联合资助. |
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| 摘 要： | 本文通过对比研究,认为多龙矿集区内斑岩型、隐爆角砾岩筒型、浅成低温热液型矿床等三种共生矿床类型属同一岩浆-热液成矿系统的产物,空间上分别位于这一成矿系统低位域、低位域顶部及高位域,其空间相对位置可作为成矿系统内相关类型矿床的勘查找矿标志。基于深部岩体的识别和矿田构造格架的建立,完善了多龙矿集区深部岩浆在地壳浅部就位和成矿的过程,构建起多龙矿集区区域成矿模式。根据该成矿模式,多龙矿集区尕尔勤、地堡那木岗及矿集区南东部等地区是下一步开展矿产勘查的有利区块;矿体形成后可能被成矿后构造错断,这一认识可以作为寻找深部隐伏矿体的勘查依据。最后指出这一成矿模式对区域找矿方向的指示意义,认为区域找矿预测中应加强班公湖-怒江成矿带中生代古陆边缘岩浆弧型斑岩-浅成低温热液成矿系统剥蚀与保存机制的研究;用于识别深部岩体的非常规找矿新方法可应用于斑岩相关矿床的评价。
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| 关 键 词： | 斑岩-浅成低温热液成矿系统 成矿模式 找矿方向 多龙矿集区 西藏 |
| 收稿时间： | 2018/8/31 0:00:00 |
| 修稿时间： | 2019/1/6 0:00:00 |
The metallogenic model and prospecting direction for the Duolong super large copper (gold) district, Tibet |
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| WANG Qin,TANG JuXing,CHEN YuChuan,HOU JunFu and LI YanBo.The metallogenic model and prospecting direction for the Duolong super large copper (gold) district, Tibet[J].Acta Petrologica Sinica,2019,35(3):879-896. |
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| Authors: | WANG Qin TANG JuXing CHEN YuChuan HOU JunFu and LI YanBo |
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| Institution: | College of Earth Sciences, Chengdu University of Technology, Chengdu 610059, China,MNR Key Laboratory of Metallogeny and Mineral Resource Assessment, Institute of Mineral Resources, CAGS, Beijing 100037, China,Chinese Academy of Geological Sciences, Beijing 100037, China,Chinalco Tibet Mining Co., Ltd., Lhasa 850000, China and No.5 Geological Brigade of the Tibet Bureau of Geology and Mineral Exploration and Development, Golmud 816000, China |
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| Abstract: | By comparing, studying on the coexist deposit types in the Duolong district, which can be divided into the porphyry type, the crypto-explosive breccia pipe type and the epithermal type, respectively, this paper shows that all of them belong to a same magmatic-hydrothermal system. The porphyry type deposit is located in the lower domain of the system, the crypto-explosive breccia pipe type deposit is located in the top of lower domain and the epithermal type deposit is located in the higher domain respectively. The relative ubieties among them can be regarded as an indicator for exploration. Based on the recognition of precursor plutons and construction of the ore field structure framework in Duolong district, the evolution process of the magma and its mineralization in this district have been rebuilt, which shows that the magma comes from deep emplace to the shallow crust to form the ore bodies. Furthermore, a regional metallogenic model for this district has been reconstructed. Based on this model, some favorable mineralize districts, such as Gaerqin, Dibaonamugang and southeastern part of this district, have been proposed. The faults formed after mineralization may help to identify the missed bind ore body. Erosion and preservation of porphyry related orebody are important for the study on regional metallogenic regularity, and the methods that identification of precursor plutons can be applied for exploration of porphyry deposits. |
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| Keywords: | Porphry-Epithermal Metallogenic System Metallogenic Model Prospecting Direction Duolong District Tibet |
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