| 西秦岭凤太矿集区西部铅锌成矿特征及找矿方向 |
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| 引用本文： | 高卫宏,王瑞廷,李青锋,刘普凯,丁坤,王淑利,孟德明.西秦岭凤太矿集区西部铅锌成矿特征及找矿方向[J].矿产与地质,2016(2):227-233. |
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| 作者姓名： | 高卫宏 王瑞廷 李青锋 刘普凯 丁坤 王淑利 孟德明 |
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| 作者单位： | 1. 西北有色地质勘查局七一七总队,陕西 宝鸡,721015;2. 西北有色地质勘查局，陕西 西安 710054; 长安大学地球科学与资源学院，陕西 西安 710054;3. 陕西省地质调查院,陕西 西安,710065;4. 长安大学地球科学与资源学院,陕西 西安,710054;5. 西北有色地质研究院,陕西 西安,710054 |
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| 基金项目： | 国土资源部公益性行业科研专项经费课题(201111007-3)，“十二五”国家科技支撑计划项目课题(编号2011BAB04B05)资助。 |
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| 摘 要： | 凤太矿集区是秦岭铅锌金成矿的重要组成部分,铅锌矿主要集中分布在矿集区的西部,可划分为南部的铅硐山―水柏沟铅锌(铜)矿带和北部的八方山―八卦庙―银母寺铜铅锌金矿带。目前区内发现的大、中型铅锌矿床均具有"沉积相+层位+构造"的"三位一体"的成矿规律,即热水喷流沉积是成矿的必备条件,古道岭组灰岩与星红铺组千枚岩接触面及附近是赋矿的主要层位,NWW向褶皱和断裂是控矿的重要因素。根据区域成矿规律、前人经验和野外总结,提出已知铅锌矿床的走向延伸部位、已发现矿体但勘查程度低的控矿背斜倾伏部位、受同一背斜控制的两个铅锌矿床之间的构造凹陷部位、与已知控矿背斜平行的次级隐伏背斜、白垩纪东河群下部、已知矿床两翼深部等部位是重要的找矿靶区和方向,应引起足够的重视。
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| 关 键 词： | 凤太矿集区 铅锌矿 成矿特征 成矿规律 找矿方向 |
Metallogenic characteristics and prospecting direction of Pb-Zn deposits in the western part of Fengtai ore-concentrated area in West Qinling |
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| Abstract: | Fengtai ore-concentrated area is an important part of the Pb-Zn-Au mineralization in Qinling area. The Pb-Zn deposits are mainly distributed in the western part of the ore-concentrated area,and can be divided into two ore belts:Qiandongshan-Shuibaigou Pb-Zn (Cu)ore belt in the south and Bafangshan-Baguamiao-Yinmusi Pb-Zn-Au ore belt in the north.Currently,it is discovered that the metallogenic regularity of trinity of “sedimentary facies + horizon + structure”can be applied to all the large and medium-sized Pb-Zn deposits in this area.It means that the exhalative hydrothermal sedimentation is an essential requirement of minerali-zation,and the contact zone and its periphery of Gudaoling Formation limestone and Xinghongpu Formation phyllite is the main ore-bearing horizon,and the NWW-trending folds and fractures are important ore-con-trolling factors.According to the regional metallogenic regularity,previous works of predecessors and sum-mary of field survey,the author believed that the important prospecting targets were extension parts of the strikes of known Pb-Zn deposits,pitching area of ore-controlling anticline of known deposits of low explora-tion degree,the structural depressed area between two Pb-Zn deposits which were controlled by the same anticline,secondary concealed anticline which was paralleled to known ore-controlling anticline,the lower part of Cretaceous Donghe Group,the deep part on both wings of the known deposits.More works should be done in these areas. |
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| Keywords: | Fengtai ore-concentrated area Pb-Zn deposit metallogenic characteristic metallogenic regularity prospecting direction |
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