摘要
贵州五指山铅锌矿田发育北东向、北东东向和北西向断层,分别平行于区域性安顺-贵阳、纳雍-息烽及水城-紫云深大断裂,控制了寒武纪-泥盆纪时期的沉积相和石炭纪前的地层剥蚀程度,以及沉积盆地中成矿流体活动。矿田中的那雍枝矿床的矿体产状、矿石结构构造、围岩蚀变及元素地球化学特征,反映其具有海底喷流沉积矿床成因。矿田深部地球物理场显示,矿田及附近存在北东向、北西向和东西向深大断裂,在几组断裂交汇处及附近的深部存在岩浆岩体及大型岩基,具备深部流体上升的条件。推测那润断层北盘那雍枝矿床深部灯影组内,F9、F10与F1断层相交,灯影组和清虚洞组层位及对应的物化探异常变异区的深部应存在大型层状铅锌矿体,具有超大型铅锌矿床的找矿前景。
In the Wuzhishan lead-zinc ore field of Guizhou Province,there exist NE,NEE and NW faults,which are secondary structures,parallel to the regional major faults,i. e. the Anshun-Guiyang,Nayong-Xifeng and Shuicheng-Ziyun faults. These faults control the sedimentary facies of Cambrian-Devonian and strata denudation before Carboniferous as well as the mineral fluid activity in the sedimentary basin. The ore occurrence,ore structure,wall rock alteration and geochemical characters of elements suggest the ore genesis of submarine exhalation-sedimentation deposits. Geophysical fields indicate the existence of NE and EW trending faults at depth in the orefield and vinicity. Below the intersection of several sets of faults,magmatic rock and large bathlith imply conditions for fluid rise from depth. So it is inferred a large bedded lead-zinc deposit exists in the deep Dengying Formation where several faults intersect The subsurface beneath the Dengying and Qingxudong formations and corresponding areas with geophysical and geochemical anomalies should have a good prospect of large Pb- Zn deposits.
出处
《地质与勘探》
CAS
CSCD
北大核心
2015年第5期859-869,共11页
Geology and Exploration
基金
中国地质调查局(贵州张维-五指山地区铅锌矿评价:编号1212010630407)
贵州省地矿局重大科研项目(贵州省铅锌成矿规律及找矿方向:编号200701)联合资助
关键词
铅锌矿
深部找矿
五指山
贵州
lead-zinc
deep ore prospecting
Wuzhishan Guizhou
