Final Report - Geoscience BC

… modelling the earthList of FiguresFigure 1. Mineral physical properties: density susceptibility cross-plot........................................................................8Figure 2. Processes of rock physical properties: density vs susceptibility cross-plot....................................................9Figure 3. Mt. Milligan geology....................................................................................................................................13Figure 4. Mt. Milligan mineralization .........................................................................................................................14Figure 5. Geology and alteration related to mineralization .........................................................................................15Figure 6. Susceptibility data for rock types mapped at Mt. Milligan ..........................................................................16Figure 7. Unaltered vs altered andesites ......................................................................................................................17Figure 8. Trends in magnetic susceptibility at Mt. Milligan........................................................................................18Figure 9. Inversion approach .......................................................................................................................................19Figure 10. Mt. Milligan synthetic models....................................................................................................................20Figure 11. Shell models ...............................................................................................................................................21Figure 12. Unconstrained synthetic model inversion result.........................................................................................22Figure 13. Variations to Milligan model .....................................................................................................................23Figure 14. Detection of other targets - lower contrast .................................................................................................24Figure 15. Detection of other targets - smaller targets.................................................................................................25Figure 16. Detection of other targets - buried 150m....................................................................................................26Figure 17. Detectability of a Milligan-like target ........................................................................................................27Figure 18. Mt. Milligan unconstrained inversion result (a) and data fit (b).................................................................29Figure 19. Constrained inversion geologic reference model for monzonite stock......................................................30Figure 20. Constrained inversion geologic reference model for stock margin ............................................................31Figure 21. Constrained inversion: geometry inversion................................................................................................32Figure 22. Constrained inversion: geologic contact ....................................................................................................33Figure 23. Constrained inversion: drill-hole bounds ...................................................................................................34Figure 24. Constrained inversion: interpolated reference and bounds.........................................................................35