The effect of adjacent magnetic sources on the interpretation of magnetic anomalies

Abstract EN

A graphical method of determining the possible effect of adjacent igneous bodies on the interpretation of magnetic anomalies caused by a given source is determined.

It requires to assume that the given igneous body produces well defined magnetic anomaly and considering contributions of other sources of different depths and widths at different horizontal distances .The method involves taking the ratios of distance between peaks of maximum +ve values of magnetic anomalies of the two adjacent igneous bodies and distance between maximum +ve and -ve values of the main anomaly.

This ratio is plotted against the ratio of( maximum -ve anomaly values, of the two adjacent igneous bodies) to the (maximum -ve anomaly values of the main igneous body).

Examples are taken from the Rutba area of the stable shelf of Iraq.