摘要
凤太矿田可划分为6条铅锌（铜）成矿带，主要成矿规律为：铅锌矿体受地层控制，矿体主要产于中泥盆统古道岭组灰岩与星红铺组接触界面附近；铅锌矿体受紧闭背斜控制，矿体一般产于背斜的转折端部位及其翼部附近；背斜的倾伏部位和背斜轴向发生变化的部位是成矿的有利部位；硅质岩发育部位铅锌矿化较好；地层产状发生变化或揉皱发育的部位是成矿有利部位；北东向断层在破坏矿体的同时又对矿体具有一定的富集作用。目前要取得风太矿田新的找矿突破，笔者认为应以风太矿田隐伏背斜所在的二里河铅锌矿区和东塘子铅锌矿区为切入点，采用地、物、化相结合的立体综合找矿方法，反复总结实践，探索隐伏找矿规律，优选找矿靶区，圈定找矿靶位，大胆探索验证，方能取得风太矿田新的找矿突破。
The Feng-Tai ore field can be divided into six Pb-Zn （Cu） metallogenic belts. The main mineralization characteristics are strata bound in which the Pb-Zn orebodies were formed near the contact between the middle Devonian Gudaoling formation and the Xinghongpu formation; Structurally, the Pb-Zn orebodies are controlled by tight anticlines and usually occurred in the positions of anticlinal axes and near the anticlinal limbs; The favorable sites for mineralization are those places where anticlines plunge and axial direction changes. The Pb-Zn mineralization is much better in the positions where silicalite is （microquartz rock） well-developed; The mineralization is developed in the places where the strata occurrence changed or wrinkles occurred. The NE striking faults have cut the orebodies and on the other, the faults have enriched in Pb and Zn. The study suggests that for a new prospecting breakthrough, the starting point should be put in the Erlihe and Dongtangzi Pb-Zn ore districts where the cryptic anticline exists. And also, a combined exploration approach has to be applied in the Feng-Tai ore field, in which geologic, geophysical and geochemical explorations are used together. Moreover, we have to be good at practice and sum-up in a no-stop manner in the prospecting of hidden ore deposit.
出处
《西北地质》
CAS
CSCD
2007年第B07期1-6,共6页
Northwestern Geology
关键词
凤太矿田
找矿历程
成矿规律
探索验证
找矿突破
Feng-Tai ore field
exploration history
mineralization characteristics
exploration and confirmation
mineral prospecting breakthrough
