Application of integrated geophysical technologies to the exploration of polymetal deposits: Case study in Fufang, Jiangxi, China

Prior research has confirmed that the Fufang prospecting area exhibits good mineral anomalies. The geochemical anomaly that pertained to copper content was delineated within a wide range; hence, the deployment of boreholes and trenches was hindered for further prospecting work. To shrink this anomaly range and identify favourable areas for mineralization, a combination of geophysical methods based on electrical and magnetic theories was proposed. First, magnetic and induced polarization (IP) mappings were utilized to characterize the distribution of anomalies horizontally. Then, the major structures were identified using IP and audio magnetotelluric sounding measurements. The integrated geophysical anomalies with good spatial consistency were also delineated. Results demonstrate that the main strike of the regional fault is in the direction of NE 50°, and some parallel secondary faults are also inferred. The dykes in this area are well developed in the strata due to rock mass intrusion. Several geophysical anomalies are highly superposed. This condition indicates good prospecting of copper and polymetals. The found anomalies delineate a new prospecting area that is 62% smaller than the previous one. This study provides a good prospect in the designated anomaly area. © 2019 School of Science, IHU.