Application of three-dimensional magnetic anomaly inversion in magnetite exploration
The Galinge iron deposit in Qinghai is overlain by deposits measuring greater than 150 m in thickness.The great burial depths of ore bodies lead to gentle magnetic anomaly morphology,making it difficult to characterize the spatial distribution of ore bodies.Therefore,this study employed three-dimensional magnetic anomaly inversion to determine the three-dimensional distribution characteristics of subsurface magnetic intensity in the study area.Given the prior information of non-magnetic surrounding rocks,the three-dimensional magnetic intensity model clearly presented the spatial distribution of the ore bodies and reflected the presence of in-tense magnetic bodies at depths of less than 500 m in existing boreholes.Accordingly,it can be inferred that there exist concealed ore bodies at depths exceeding 500 m in the study area.The results of this study suggest that three-dimensional magnetic anomaly inversion can effectively improve target identification,providing clear information on the horizontal positions,depths,and scales of magnetic ore bodies.The proposed inversion method can offer strong support for drilling design and reserve estimation,warranting promotion in de-tailed exploration of solid minerals.
magnetic surveythree-dimensional inversionmagnetite explorationGalinge deposit
万方数据
维普
