Crustal studies of South Australia based on energy spectral analysis of regional magnetic data

Abstract

Energy spectral analysis applied to regional aeromagnetic data covering an area between 26°S and 35°S and 129°E and 141°E indicates an interface which lies at depths of between 5 km and 25 km. Structures indicated on the contour map of the depth of this interface are related to major features on the gravity map and to folds and faults in the Musgrave Block, the Gawler Craton and the Adelaide Fold Belt as well as to kimberlite intrusions in the Adelaide Fold Belt.