Numerical modeling of Z‐TEM (airborne AFMAG) responses to guide exploration strategies

Mineral exploration using the Z‐TEM or Z‐Axis Tipper Electromagnetics, an airborne AFMAG system, has been guided by numerical modeling of the target types. Numerical modeling is used to plan the survey in terms of survey line spacing, survey height, and expected signatures of the targets. Knowing the Z‐TEM response of a deposit of the type that is being explored for, aids in the interpretation of the results. Numerical modeling has demonstrated that the Z‐TEM system is ideally suited for large, deep deposits of low to high resistivity contrasts such as porphyry copper and SEDEX deposits.