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Best Use of Drillhole Log Data for Geostatistically-Constrained Potential Field Inversions
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 76th EAGE Conference and Exhibition 2014, Jun 2014, Volume 2014, p.1 - 5
Abstract
This presentation will show some best-practice examples of maximising borehole petrophysical and geochemical log data together with geological and seismic data, to produce ideally constrained 3D starting geological models for inversion with magnetics, gravity and gravity gradients. Results have far-reaching implications for targeting of Uranium and Base Metal Mineralisation, as well as producing extremely well-constrained Basin and Basin Density models, and even predicting mineralisation away from known drilling. The presentation will highlight approaches to problem-solving for 3D inversion in different geological contexts with some recent modelling examples from both industries, using novel geostatistical modelling with domain kriging, wavelength and residual filtering, and gravity, gravity gradient and magnetics data. The presentation will also demonstrate how the results of inversion and modelling can be used in exploration targeting at earlier stages with significant application for the Uranium industry and other types of exploration.