A new method is presented for determining the horizontal dimensions, depths to top and bottom, and intensity and direction of remanent magnetization of a uniformly magnetized body of rectangular prism shape. Accuracy of computation of these parameters is highly dependent on the correct location of the center and on determination of major and minor axes of the body. An iterative method of calculation is used. The method is aided not only by the second vertical derivative map of the observed total field but also by the total field reduced to the pole and its second vertical derivative map. Factors affecting accuracy of calculations are discussed in detail. With high speed digital computers, this method can be used to great advantage for computing the above parameters of magnetized bodies giving rise to a number of anomalies over a particular area.

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