Application of regional gravity and magnetics to the regional geological framework of Australia

Abstract

The published gravity and magnetic maps of Australia provide a means to extend and refine the generally accepted regional geological framework of the continent. Major crustal units can be recognised by areas of predominantly high or low gravity values. The boundaries of most units are outlined by steep gravity gradients. Magnetics are used in defining more closely the boundaries of crustal units and features within the units such as igneous rocks, particularly granitic bodies, basic and ultrabasic masses, major faults and other lineaments.