云南会泽铅锌矿床外围高家阱勘查区构造样式与构造地球化学找矿  

The ore-controlling tectonic patterns and tectono-geochemical prospecting in the Gaojiajing exploration area, the periphery of the Huize lead-zinc deposit, Yunnan

作　　者：周俊朋 吴鹏[1] 韩润生[1] 郭忠林 王雷[1] 龚红胜[1] ZHOU Junpeng;WU Peng;HAN Runsheng;GUO Zhonglin;WANG Lei;GONG Hongsheng(School of Land and Resources Engineering,Kunming University of Science and Technology,Kunming 650093,Yunnan,China;Huize Mining Subsidiary of Yunnan Chihong Zn and Ge Co.,Ltd.,Huize 654211,Yunnan,China)

机构地区：[1]昆明理工大学国土资源工程学院,云南昆明650093 [2]云南驰宏锌锗股份有限公司会泽矿业分公司,云南会泽654211

出　　处：《地质通报》2019年第11期1899-1911,共13页Geological Bulletin of China

基　　金：国家自然科学基金项目《滇东北矿集区富锗铅锌矿床成矿机理研究及靶区优选》（批准号：U1133602）;校企合作项目《会泽矿区多层位铅锌等多金属矿找矿潜力研究》;云南省矿产资源预测评价工程实验室;云岭学者资助项目（2014）;云南省地质过程与矿产资源创新团队

摘　　要：高家阱勘查区位于云南会泽铅锌矿床北东侧,是矿山厂断裂NE向延伸的有利成矿地段。在1∶5000构造地质填图基础上,结合典型构造面力学性质分析,认为高家阱勘查区受NE向矿山厂背斜、矿山厂断裂控制,NE向左行压扭性层间断裂是矿体赋存的有利部位。印支晚期,在NW-SE向应力持续作用下,形成NE向牵引褶皱,构成高家阱控岩控矿构造格架--逆冲推覆构造,为成矿流体的运移提供通道。通过蚀变指数计算,提取肉红色粗晶白云岩、米黄色粗晶白云岩、灰白色粗晶白云岩蚀变信息,划定3个强蚀变地段。通过构造地球化学因子分析,绘制Pb-Zn-Cd-Ag、As-Sb-Hg元素组合异常图,提取异常信息并圈定4个主要异常区。除石炭系外,异常还分布在震旦系、泥盆系,具多层位找矿潜力。综合控矿构造-矿化蚀变-构造地球化学勘查技术组合,提出找矿方向。Located in the northeast of the Huize lead-zinc deposit, the Gaojiajing exploration area is a favorable ore-forming area located on the northeast side of the Kuangshanchang faults. On the basis of the 1:5000 structure geological mapping, the authors studied and summarized the structural styles based on an analysis of the mechanical properties of typical structural surfaces, and consider that the Gaojiajing exploration area is controlled by the thrust-fold structures, NE-trending left-slip compression torsion interlayer faults and NW-trending transtensional faults and is the favorable place in search for ore bodies. In late Indosinian period,Permian-Sinian strata were reversed and the NE-trending drag fold was formed under the action of the NE-striking stress. These factors constituted the tectonic framework of the Gaojiajing exploration area and provided passage and storing space for the flowing metallogenic fluids. The authors extracted alteration information by calculating chemical index of alteration, and delineated three strongly altered places. The authors extracted the combined anomalies of Pb-Zn-Cd-Ag and As-Sb-Hg by using factor analysis method, and delineated four anomaly areas. The abnormal distribution which reflects the"multi-layer"mineral exploration potential was found in Sinian, Devonian and Carboniferous strata. The ore-prospecting direction and the prospecting target are proposed by synthesizing the exploration technology of ore-control structure, mineralized alteration and tectono-geochemistry.

关 键 词：构造样式 构造地球化学 高家阱勘查区 会泽铅锌矿床 云南 

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