f Calculation of gravity and magnetic anomalies of two- and three- dimensional sources having arbitrary geometry and density or susceptibility distribution

The gravity and magnetic anomaly of complicated two- or three- dimensional sources having arbitrary geometry and physical parameter distribution (density or susceptibility) can be calculated using a combination of analytical and numerical integration. We can, for example model intrusives or folded sedimentary beds altered by regional metamorphosis using sources whose upper and lower surf aces and the physical parameters are arbitrary functions of horizontal coordinates.