福建梅仙丁家山铅锌（银）矿床磁异常特征及其找矿意义

着重论述了丁家山铅锌（银）矿床的地质地球物理特征，磁法找矿的特殊作用，总结了建筑梅仙式矿床的物化探异常标导。

Characteristics of Magnetic Anomaly of Dingjiashan Pb Zn(Ag) Deposit in Meixian, Fujian Province and Its Prospecting Significance

The paper studiy the geophysical features of Dingjiashan Pb Zn(Ag) deposit.The deposit is hosted by Sinian (Late Proterozoic) greenschist and light coloured schist Main metallic minerals are pyrrhotite,sphalerite,galena,magnetite,chalcopyrite and pyrite etc.1/100,000 scale airborne magnetic survey shows that there are regularly zoned local anomaly on the normal magnetic background (about 100 nT),especially,the single peak anomaly is very important.Dingjiashan is one of the single peak anomaly.The ground magnetic survey also shows strong magnetic anomaly(hundreds to thousands nT).The geochemical survey shows very high Pb Zn anomaly,the peak value can reach over 2000 ppm.The author conclude that the future prospecting shall notice following typical characters On the small scale regional gravity and magnetic surveying maps,Bouguer gravity anomaly center usually reflects the location of the deposit.The airborne magnetic anomaly will be the single peak anomaly dotted on the slope magnetic background.On the small scale geochemical exploration map,there are Pb group heavy mineral anomaly and train Pb Zn Ag Cu composite anomaly and relative concentration center.On the relatively large scale magnetic surveying map,the magnetic anomaly with certain strength along the Sinian strata and tectonic window has been detected and associated with Pb Zn Ag Cu composite anomaly of secondary hola on geochemical surveying map.