论成矿台阶

ON METALLOGENIC LEVELDONG

成矿台阶系指同一成矿区、同一成矿系列的同一类型矿床的主要矿体赋存在相应的标高范围内。湘南—粤北地区,铌钽矿床的成矿台阶为～;石英脉—黑钨矿床～640980 m600,石英脉—白钨矿床～,矽卡岩型白钨矿床～;浅源重熔岩浆系列铅1 400 m100400 m100860 m锌矿床～,深源同熔岩浆系列铅锌矿床-～,最深可达-;石英脉型6001 100 m200100 m700 m锡石矿床～,锡石—硫化物、蚀变花岗岩型、云英岩型锡矿床～,香花岭、6501 400 m450650 m界牌岭锡多金属矿床-～。利用成矿台阶新理念,指导上述矿床的勘查,可以收到事半200 270m功倍的探矿效果。

Concept of metallogenic level is the main ore bodies forming in a same metallogenic area,a same metallogenic series occur in corresponding range of metallogenic level. The Nb,Ta deposits in ～the area of Southern Hunan-Northern Guangdong occur in the level of 640980m, wolframite-quartz ～vein deposits occur in the level of 6001,400m, the scheelite-quartz vein deposits occur in the level ～of 100-400m, the skarn scheelite deposits occur in the level of 100860m, the Pb-Zn deposits of ～hypabyssal resmelted magma series occur in the level of 6001,100m, the Pb-Zn deposits of plutonic intrusive magma series occur in the level of -～200100m(maximum depth:-700m), cassiterit deposits ～of quartz vein type ocurr in the level of 6501,400m, Sn-deposits of cassiterite-sulphide, alteration ～granite and greisen occur in the level of 450650m, Sn-polymetallic deposits in Xianghualing and ～Jiepailing occur in the level of -200270m. With the new idea of metallogenic level, we can get twice the prospecting result with half the effort.