【Objective】As one of the large-scale and most representative skarn-type iron deposits in southeastern Hubei, Chengchao Iron Mine has accumulated abundant gravity and magnetic survey data. However, further in-depth utilization of gravity and magnetic anomaly information to evaluate the prospecting potential of the deep and peripheral areas of the mining area still requires systematic and in-depth research. 【Methods】In this study, the wavelet multi-scale analysis method was used to reprocess the gravity and magnetic data of the mining area, so as to obtain detailed gravity and magnetic anomalies corresponding to different pseudo-depths. The intensity, scale, combination characteristics of positive and negative magnetic anomalies, and their corresponding relationships with geological bodies controlled by known projects were finely analyzed from both planar and section scales. 【Results】The results show that with the increase of depth (from the 1st to the 4th order), the intensity of detailed gravity and magnetic anomalies gradually increases, reaching the highest at the 4th order. The magnetite orebodies controlled by actual projects are mainly distributed in the pseudo-depth areas corresponding to the 1st to 3rd order detailed anomalies, indicating that the deep and peripheral areas of Chengchao Iron Mine still have great prospecting potential. 【Conclusion】Subsequent engineering verification and logging results further confirm that the wavelet multi-scale decomposition and multi-dimensional fine analysis method can provide an effective reference for the interpretation of geological structures and prospecting prediction in unknown deep areas.
DownLoad: