Gravity and magnetic Surveys ? Elura orebody

Abstract

Gravity and magnetic investigations prior to the discovery of the Elura field, at Cobar, Australia in 1974 indicated an anomalous body 250 m in length, 120 m in maximum width and a depth to the top of 90 m. The body dips 80° W and assuming a density contrast of 1600 kg/m3 between mineral and host rock, the body would have a mass of 34.4 million tonnes. The interpretation presented compares well with the post drilling model.