Gold Ore Body Exploration Using Correlation coefficient of Analytic Signal to Magnetic Prospecting Data

In the exploration of gold ore body, magnetic prospecting is effective in elucidating the geological structure influenced to mineralization, but it is affected by several factors such as remanent magnetization of the surrounding rock mass. The analytic signal is insensitive to magnetization direction in 2D, so it is widely used to detect the boundary of magnetic source. Recently, a method using correlation coefficient of the analytic signal of real data and model data by assumed source has been proposed for the interpretation of magnetic data. To calculate the magnetic anomaly of the assumed model, it is necessary to know the structural index, which is information about the type of source. We propose a method using the correlation coefficient of analytic signal of measured data (ASSMD) directly on known orebody in the deposit area, rather than the assumed source, and apply it to real data to clarify the distribution of gold orebody.