The resource extent of gold is diminishing with thirty years of continuous mining in Dashui gold concentration area of south Gansu Province. In order to obtain a new breakthrough in prospecting in the periphery and deep of the Dashui gold concentration area, 1:50 000 high-precision magnetic measurement of the ground was implemented. With the help of 1:50 000 high accuracy ground magnetic measurement and 2.5D human-computer interaction inversion, the author delineated the geomagnetic field anomalies in the study area and the precision section is explained. The author analyzed the characteristics of magnetic anomalies and the relationship between magnetic anomalies and gold deposits and explained the reasons for the abnormal formation. In addition, the author also summarized the geophysical prospecting signs in the study area. Finally, with the help of the stream sediment survey and geological mapping, the author predict the potential ore-prospecting area and newly discovered gold resources of 10 tons. It shows that magnetic survey is effective in prospecting in the Dashui gold concentration area and the distribution range of acid intrusive reflected by magnetic anomalies is favorable area for exploration of gold deposits.
张波, 滕汉仁, 胥溢. 甘肃南部大水金矿矿集区磁异常特征及找矿分析[J]. 物探与化探, 2018, 42(5): 917-924.
Bo ZHANG, Han-Ren TENG, Yi XU. A discussion on the characteristics of magnetic anomaly and ore-prospecting orientation in Dashui gold concentration area of south Gansu Province. Geophysical and Geochemical Exploration, 2018, 42(5): 917-924.