Integration experience of resistivity method contactless technology and unmanned aerial vehicle measurements in primary gold prospecting in Bodaibo synclinorium

The current situation in the mining and geological industry requires acceleration and reduction of the cost of exploration works. Ground-based contactless methods as well as methods using unmanned aerial vehicles have significant prospects for geophysical exploration optimization in difficult-to-access areas with faltering galvanic grounding. The purpose of the study is to present the results of both the use of contactless electrical exploration (electric field contactless measurement), which is commonly used in engineering surveys, and magnetic exploration performed with the use of unmanned aerial vehicles. The complex is aimed at searching for primary gold in the Bodaibo district of the Irkutsk region. The paper provides a brief description of the geological (geophysical) situation and justifies a rational measurement method. Geophysical works have been carried out on a scale of 1:10000. Also, the obtained data have been compared with the application field of the contactless technology of the resistivity method. As a result, additional and necessary theses have been proposed for the long-held measurement technique. It has been determined that the proposed complex allows confident mapping of the main geological structures promising for gold mineralization in a shorter period of field work.