广东云浮茶洞银多金属矿床构造特征分析与找矿  

Structural Characteristics and Ore Search of the Chadong Silver- Polymetallic Deposit in Yunfu,Guangdong Province

作　　者：傅良刚 刘昌明 沈睿文[2] 

机构地区：[1]武警黄金第九支队,海南海口571127 [2]武警黄金第三总队,四川成都610036

出　　处：《地质与勘探》2014年第6期1087-1095,共9页Geology and Exploration

基　　金：中国地质调查局项目(编号:12120114083701)资助

摘　　要：广东云浮茶洞银多金属矿床位于加里东褶皱系云开隆起核部,是经历了多期不同性质构造作用,在蚀变破碎带中产出的浅成低温热液矿床。笔者从区域构造特征的研究入手,及其对成矿作用的影响,认为吴川-四会断裂带与镇安逆冲推覆构造对矿床的形成具有深远的影响。通过对矿区断裂构造特征及矿脉应力场的综合分析,论证了南北向断裂构造与金银矿化的密切关系,受右行剪切压扭性应力作用,断裂右转弯或产状面由缓变陡地段为矿体有利的容矿空间,并据此提出下一步找矿方向与思路。The Chadong Ag-multiple metal deposit,located in the core of the Caledonian Yunkai uplift,Guangdong Province,is an epithermal deposit in an altered- fracture rock belt which was affected by multiphase tectogenesis. This paper suggests that the Wuchuan-Sihui fault zone and Zhen 'an thrust nappe are the main factors which influence the formation of this deposit,based on the study of regional tectonic features and their impact on mineralization. The characters of faults and stress field show a close relationship between the north-south structural zone and Au-Ag mineralization. Considering the control of the right shear or transpressure stress,the most favorable ore-forming space should be the place where the fault turns right or its dip angle changes from steep to gentle. Based on these analyses,this work suggests the ore-search direction and line of thought for future exploration in this area.

关 键 词：找矿 构造特征 银多金属矿床 茶洞 广东 

分 类 号：P618.2[天文地球—矿床学]