Contact Mapping From Gridded Magnetic Data–a Comparison of Techniques

Delineating the edges of magnetized bodies is a fundamental application of magnetic data to geological mapping in areas of limited exposure. Especially in Pre-Cambrian shield-like regions, locating lateral changes in magnetization of the outcropping crystalline rocks provides spatial information that is crucial in extending mapped geology into sparsely exposed or completely covered areas. Although not all magnetic contacts correspond to …