南秦岭地区凤太矿田某铅锌矿地质特征及深部找矿方向  

Geological characteristics of a certain Pb-Zn deposit in Fengtai ore field of the Southern Qinling area and prospecting direction in its deep part

作　　者：谭杰 倪战旭 毛国斌 

机构地区：[1]中国有色桂林矿产地质研究院有限公司,广西桂林541004 [2]广西壮族自治区区域地质调查研究院,广西桂林541003 [3]中国建筑材料工业地质勘查中心广西总队,广西桂林541002

出　　处：《矿产与地质》2017年第4期739-743,749,共6页Mineral Resources and Geology

基　　金："十二五"国家科技支撑计划(2015BAB05B05)"高寒深切割山区大型矿床找矿靶区圈定与评价技术研究"资助

摘　　要：本矿床位于凤太矿田西南部,受控于铅硐山—东塘子复式背斜。在成矿区带上,矿床地处秦岭造山带之南秦岭微板块北部晚古生代构造裂陷沉降带中,处于南秦岭晚古生代泥盆系金-多金属成矿中部,属"海底热水喷流沉积-改造型"铅锌矿床。通过对矿床地质特征调查,结合区域地质背景分析和深部探矿工程、地球物理、地球化学工作取得的进展及成果,系统分析本矿区现采界面以下深部矿体的层控与时空、古地理与构造控矿、倾伏规律、岩相和围岩蚀变标志等规律,对构造控矿规律和成矿预测进行研究,认为其深部具较大的找矿潜力,为下一步的勘查工作指明了深部找矿方向。The deposit studied in this paper is situated in the southwestern part of Fengtai ore field,and it is controlled by Qiandongshan-Dongtangzi anticlinorium.The deposit is located in the same metallogenic belt.In terms of the metallogenic planning,the deposit is a submarine exhalative hydrothermal sedimentation-reformation Pb-Zn deposit which lies in late Paleozoic tectonic rifting subduction zone of northern part of Southern Qinling microplate in Qinling orogenic belt and is also in the middle part of Au polymetallic metallogenic zone in late Paleozoic Devonian system of Southern Qinling area.Based on the survey of geological characteristics of the deposit and research results of regional geological setting analysis,exploration engineering,geophysical and geochemical works in the deep part,this paper analyzed the relationship between stratabound and space-time,Paleogeography and structural ore controlling system,pitching and plunging regularity,petrofacies and wall rock alteration clues of those ore bodies which are under present mining boundry in the district.After studying the structural ore controlling regularity and metallogenic prognosis,the authors believed that the deep part of the deposit had great prospecting potential and they tried to point out the direction of deep prospecting for future exploration works.

关 键 词：铅锌矿 地质特征 深部找矿 凤太矿田 南秦岭 

分 类 号：P618.42[天文地球—矿床学] P618.43[天文地球—地质学]