利用航磁增强处理方法提取喇嘛苏铜矿及其外围弱磁异常

The extraction of weak magnetic anomalies in and around the Lamasucopper deposit by using automatic gain control method

为了利用高精度航磁资料进行成矿预测,需要提取弱航磁异常信息。采用航磁增强处理方法(automatic gain control,简称"AGC")对喇嘛苏铜矿所在地区的高精度航磁资料进行处理后,能够突出显示由铜等多金属矿引起的航磁弱异常信息,且在赛里木湖东西两侧有许多与喇嘛苏铜矿类似的弱磁异常信息分布。笔者认为航磁增强处理方法可以提取铜、金等金属矿成矿有利的航磁微弱异常信息,划分局部成矿有利的隐伏断裂构造,为成矿预测提供科学依据。

In order to make use of high precision aeromagnetic data for metallogenic prognosis,it is necessary to extract the weak aeromagnetic anomaly information.Using aeromagnetic enhancement methods(automatic gain control referred to as"AGC")to process high precision aeromagnetic data in and around the Lamasucopper deposit,the authors highlighted the aeromagnetic information caused by weak copper polymetallic anomalies.It is shown that there are many weak anomalies on both sides of the SayramLake,similar to things of the Lamasucopper deposit.It is considered that aeromagnetic augmented processing can extract information of favorable aeromagnetic anomalies,such as copper and gold metallogenic deposits,and can also classify the favorable buried fault structures,so as to provide scientific basis for metallogenic prognosis.