Application of Magnetotelluric Method in Deep Geological Structure Exploration
In order to explore the deep geological structure of a mining area,the magnetotelluric method is needed to carry out the detection task.The V8 electrical instrument is used to complete data acquisition in the field,and the survey points are reasonably arranged based on the field exploration results.At the same time,consistency detection,stability measurement and other means are adopted to ensure the reliability of the survey data from the source.After setting the acquisition parameters such as balance factor and iteration times,data acquisition and inversion processing are started.According to the inversion results,there is a large difference in resistivity between the north and south of the study area.The north is high resistivity area,the south is low resistivity area,and granite is mainly distributed in the south of the mining area.In addition,two fault zones were identified,and granite bulges were found at the depth of 2200 m.It is preliminarily speculated that there may be a medium-sized tin deposit.