AGCOS presented “New highly Sensitive, all-season ground electropospecting technique for mining exploration” at the Innovation Forum organized by CAMESE. March 2, 2014.
Magnetovariational Profiling (MVP) Method
Highly sensitive, productive, all-season electroprospecting technique based on the measurement of the variation of 3-othogonal components of Earth’s magnetic field for mining exploration.
The Magnetovariational Profiling (MVP) method, well-known in the 1950s – 1970s as the highly sensitive deep crust study technique, has become at the beginning of this century the new highly sensitive and highly productive method for mining exploration with no loss in initial qualities. The main contributing factors to this development include:
- Initiative of Canadian and Russian geophysicists (Toronto, St. Petersburg);
- Emergence of portable highly sensitive, high-frequency induction magnetic sensors (AMT band);
- Emergence of precision field tripods for accurate and quick magnetic sensor positioning and alignment, which significantly improves productivity and allows surveys to be carried out year-around; and
- Development of robust interpretation techniques, which allow over the course of a field survey to locate promising anomalies and assess their parameters without carrying out the inversion.
The most remarkable property of this method, besides the ability to solve a wide range of tasks and the scope of investigations (from mapping of thin veins and dikes overlain by sediments near the surface to the ore bodies at depths of 1 -3km), is the ability to sense the ore bodies and to determine their direction far away from the observation profile.
This feature significantly reduces the amount of required field measurements by identifying via sparse network of profiles perspective areas where to carry out detailed observations to determine the parameters of perspective bodies. Discussed here are the results of field surveys using the MVP method in different areas of the world.