一、序言目前,作為重要的地球物理勘探方法之一的自然電場法正在日益廣泛地被用來普查和勘探各種金属硫化礦床。效果是明顯的。但是在一般同志中對待這些自然電位異常尚存在着兩種錯誤的看法:首先有些同志對這種異常想像成像某些磁異常那樣簡單,(實際上也並不是那樣簡單),即在磁鐵礦產地上有磁性異 I. Preface Nowadays, the natural electric field method, one of the important geophysical exploration methods, is being used increasingly to survey and explore various metal sulphide deposits. The effect is obvious. However, there are still two erroneous views on the treatment of these abnormal natural potentials by ordinary comrades. First, some comrades imagine that such anomaly is as simple as that of imaging some magnetic anomalies (in fact, it is not that simple), that is, Magnetic differences