Inversion of time domain spectral IP data

Abstract

A part of the Tasmanian Mines Department's Mount Read Volcanics Project involved the collection of IP data from a variety of materials to define the expected signatures of massive sulphides, barren sulphides, alteration zones and relatively unaltered host rocks. In all data were collected from some 70 sites using time domain equipment. These data provide a unique uniform collection of in situ property measurements for western Tasmania. The possibilities of mineral discrimination by fitting Cole?Cole models to the in situ data appear excellent. The economic massive sulphides are characterised by a distinct field of m-tau values bounded on the lower m side by a class of black shales and on the low tau side by other sulphide mineralization.