Due to unforeseen circumstances EAGE unfortunately has to withdraw this course from the SAGEEP programme, we're sorry for the inconveniene this may cause.
EAGE Education Tour (EET11): Mining track
Quantitative Interpretation of Gravity and Magnetic Methods in Mineral Exploration
Dr Yaoguo Li
Center for Gravity, Electrical, and Magnetic Studies
Department of Geophysics
Colorado School of Mines
3D inversion techniques have emerged as a major component in the quantitative interpretation of gravity and magnetic data, and the availability of 3D inversions has advanced the interpretation of these data from 'anomaly bump hunting' to 3D imaging of the subsurface. The ability to reconstruct the distribution of density or magnetic properties in various geological units have shifted interpretations from the data domain to the model domain. Similarly, inversion techniques are also poised to make major contributions to the emerging field of geology differentiation that seeks to differentiate and characterize different lithology units, mineralized zones, or alteration zones.
This course presents the state of art and practice of 3D inversion-based quantitative interpretation by focusing on the methodology, numerical computation, solution strategies, and applications of 3D physical property inversions of gravity and magnetic data sets. The emphases are on the recovery of density contrast, magnetic susceptibility, or magnetization distribution in 3D and their applications in the multiphysics interpretation to imaging geology.
(1) Fundamentals of gravity, gravity gradiometry, and magnetic surveys
(2) Data processing methods based on equivalent source techniques
(3) 3D gravity, gravity gradient, and magnetic inversions
(4) Approaches to the inversion of magnetic data affected by remanent magnetization
(5) Case histories of 3D inversions from mineral exploration
(6) Geology differentiation
Participant profile (who should attend this course)
Participants are expected to have basic background in applied geophysics and some knowledge of potential-field methods. We anticipate the geoscientists in the following areas will benefit from the course:
(1) Potential-field methods
(2) Mineral exploration
(3) Integrate interpretation