摘要
湘南西部处于南岭多金属成矿带中段,矿产资源丰富.在新一轮国土资源大调查中,认为内生金属矿的形成受一定的沉积建造、地质构造和岩浆岩控制,呈规律性分布.根据成矿地质背景和矿床组合特征,可划分3个成矿系列,即与1型花岗岩类有关的铜铅锌银成矿系列,与S型花岗岩类有关的钨锡铅锌铜银成矿系列和沉积改造型铁锰铅锌成矿系列.最后,以区内地质成矿规律、地球物理、地球化学及已知矿产分布等为依据,建立找矿标志,提出找矿靶区,指出每个靶区的主攻矿种和主攻矿床类型.
The west part of Southern Hunan Province is situated in the middle of Nanli ng polymetal metallogenic zone,where mineral resources are rich.The regularly distributed endogenic metallic deposits are controlled by c ertain sedi-mentary formation,geological stru cture and magmatite.Based on the background of metallogenic geology and deposit assemblage,three metallogenic series are divided in the studied area,namely,Cu-Pb-Zn-Ag metallogenic se ries related to I-type granitoid,W-Sn-Pb-Zn-Au -Ag metallogenic series related to S -type granitoid,and Fe-Mn-Pb-Zn me tallogenic series related to sedimentary reformation.Six prospecting criteria are set up on the basis of the regional me tallogenic regularity,geophysics,geochemis try and the distribution of minerals.They are 1)the transitional zones of different sed-imentary phases of Devonian and Carb oniferous;2)the contacting zones between carbon atite or clastic rocks and Yan-shanian granite bodies,high emplac ed buried rock bodies or faults;3)the intersection parts of crustal fa ults,basement faults and tectono-magmatic mobile zones;4)large and well overlapped geophysic al and geochemical anomalous areas;5)the superimposed areas of circlar an d linear images in remote sensing photomap;and 6)the metallogenic areas with concentrated mineral resources.Si x mineralizing zones are recognized,i.e.1)Tongshanling-Xianglinpu Cu-Pb-Zn-Ag and Sn-W mineralizing belt;2)the northern slope of Jiuyishan Fe-M n-Pb-Zn mineralizing belt;3)Jinjiling rock body W-Sn-Rb and Pb-Zn-Ag mineralizing b elt;4)Dupangling W-Sn-Cu mineralizing belt;5)Guposhan Sn-W,Nb-Ta-Y and Pb-Zn mineralizing belt;and 6)Mashi-Daxi Au-Ag mineralizing belt.In the studied area,the investigation for en dogenic metal minerals should be foc used on Sn,W,Pb,Zn and Ag,and Cu and Au as well.The searched types of deposits are mainly greisen body typ e,residual cap skarn type,tectono-altered rock type and sedimentary re formation type,followed by fissure filling ty pe.
出处
《地质与资源》
CAS
2002年第2期104-108,共5页
Geology and Resources
关键词
成矿地质背景
成矿系列
找矿方向
湖南
沉积建造
岩浆岩
金属矿床
地质构造
Key words:metallogenic geologic background
metallogenic series
prospecting p rognosis
the west part of Southern Hunan Province
