第二代航磁黄沙坪异常的分解及其矿产新空间

本文采用同时具有识別、分解、解释异常三重作用的三元解释法■,在黄沙坪异常负值区有效地提取了由未知的深源磁性体引起的剩余异常。该异常与已知的中、浅源磁性体分处于极为类同的成矿地质背景中。后者与隐伏岩体、铅锌多金属盲矿体之间有着密切的成生联系。这为前者间接找矿提供了有力的依据。定量解释结果中,两者间的磁矩等效关系,论证了已知矿床西侧深部空间里,仍存在找到又一个大型矿床的前景。

THE DISINTEGRATION OF HUANGSHAPING ANOMALY FROM THE SECOND GENERATION AEROMAGNETIC SURVEY DATA AND POSSIBLE NEW SPACES FOR FINDING MINERAL RESOURCES

The three-element interpretation method, which has the function of recognizing, disintegrating and interpreting magnetic anomaly, is adopted in this paper and a residual anomaly caused by unknown deep magnetic body is picked up effectively in the negative area of Huangshaping anomaly. This anomaly is situated in the metallogenic geologic background extremely similar to that of middle to shallow magnetic bodies which have close genetic connection with the concealed intrusive bodies and lead-zinc polymetallic orebodies. This provided forceful basis on which the anomaly can be used to locate orebodies indirectly. In the quantitative interpretation, the magnetic moment equivalence of the two indicates that it is still promised to find another large scale ore deposit in the deep part of the area to the west side of the known ore deposit.