航磁弱异常信息增强处理在地质解释中的应用

The Application of airborne magnetic weak information enhancement method in the field of geological interpretation

在航磁异常地质解释工作中,由于地质层体的磁性较弱,磁性变化较小,一般显示为较为平静的负磁场区,这些区域的断裂构造及隐伏岩体引起的弱磁异常的特征不十分明显,给航磁地质解释带来一定的困难。利用航磁增强处理技术能够突出显示弱磁异常信息,更加准确合理的推断解释断裂构造和隐伏岩体,充分发挥航磁测量在岩性构造填图及成矿预测中的作用。

In the geological interpretation of airborne magnetic anomalies, due to weak magnetism of geological strata and small magnetic variation, which is generally shown as a relatively quiet and negative magnetic field, it is difficult to geological interpretation of weak magnetic characteristic caused by fault structure and concealed rock mass. The use of airborne magnetic weak information enhancement method can highlight the weak magnetic anomalies' information, more accurate and reasonable infer and interpret fault structure and concealed rock mass, which make airborne magnetic survey gives full play in the fields of lithostructural mapping and metallogenic prediction.