Geosoft's Dr. Rob Ellis And Taronish Pithawala will be presenting , Magnetization Vector Inversion, during the Great Basin and Western Cordillera Mining Geophysics Symposium in Elko, Nevada. Dr. Ellis' presentation will discuss how 3D gravity and magnetic voxel inversion software has been available for a number of years, but with recent advances in algorithms and the ability to harness the available computing power of the cloud, the time taken to run even quite complex inversions has reduced dramatically. This has allowed inversion to be done quickly and easily at earlier stages of the exploration cycle.

The presentation will discuss how all potential field inversion is inherently non-unique, and much research has gone into ways to improve inversion results by allowing additional geological or geophysical information to be integrated into the process. There are still significant challenges with inversion of potential field data, and this presentation reports on recent progress in the key areas of handling remanent and other magnetization problems in the inversion process.

Dr. Ellis will highlight how Magnetization Vector Inversion (MVI) is a method to incorporate induced and remanent magnetization without prior knowledge of the magnitude or direction of the remanent field. MVI inverts directly for the magnetization vector rather than susceptibility, giving a more realistic interpretation tool that honours the true source of the magnetic response. Data from the Osborne mine in Queensland Australia are used to illustrate the method.

Read the paper on Magnetization Vector Inversion (MVI).

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