山西堡子湾金矿区成矿流体场特征与隐伏矿床定位预测

综合运用遥感微差信息处理技术、水系沉积物X荧光测量和地表基岩伽玛能谱测量方法研究了山西堡子湾金矿的成矿流体场 ,发现主要的矿化蚀变带呈NW向展布 ,与含矿的NEE向角砾岩带斜交 ,表明成矿后受到一定程度的改造。矿区内存在着两类矿体 ,即陡倾斜的隐爆角砾岩型金矿和缓倾斜的蚀变岩型金矿 ,已知矿体和蚀变带主要受矿区南部的环形构造控制 ,该环形构造可能与隐伏岩体顶部拆离断层系统有关

THE CHARACTERISTICS OF METALLOGENIC FLUID FIELD AND LOCALIZING PROGNOSIS OF CONCEALED OREBODIES IN THE PUZIWAN GOLD DEPOSIT, SHANXI

The remote sensing differential information processing technique, the X fluorescence survey of stream sediments and the subaerial base rock gama survey technique were jointly applied in the Puziwan gold deposit, Shanxi to study the gold metallogenic fluid field. The result shows that the major mineralization alteration zone strikes northwestwards, which crosses the ore-bearing NEE-trending breccia zone. It is deduced that the original orebodies have been reformed by subsequent geological events and that there are two kinds of orebodies in the deposit, i.e., the cryptoexplosive breccia-type gold orebodies with a steep dip angle and the altered rock-type gold orebodies with a low dip angle. The known orebodies and alteration zones are all controlled by the circular structures appearing in the south of the deposit which is probably related to the detachment fault system developed in the upper part of the large blind magmatic massif.