Target Exploration Initiative South Australia (TEiSA) ? Musgrave Block uncovered

Abstract

Following extensive negotiation and consultation with Anangu Pitjantjatjara (AP) stakeholders, Minerals and Energy Resources South Australia (MER) obtained permission to undertake a regional airborne geophysical program over the Mann, Woodroffe and Alberga 1:250, 000 map sheets within the Musgrave Block. Commencing with the Woodroffe map sheet the surveys were flown at 400 metre line spacing and at a survey height of 80 metres. The surveys provided an excellent opportunity for the AP stakeholders to view first hand the processes and mechanisms required to undertake a large regional airborne survey. As a result MER was further encouraged to continue the survey onto the adjoining map sheets of Mann and Alberga. The result is a spectacular data set covering approximately 75% of the Giles Complex within the Musgrave Block. The new TEiSA data has provided an excellent insight into the geological structure of the region at a resolution never seen before. There is clear delineation of the mafic bodies and fault systems hidden beneath the shallow cover. The radiometric ?RGB? ternary image shows the contrasting geology clearly delineating such features as the Woodroffe Thrust Zone. The digital terrain data provides good terrain detail successfully delineating the ranges and dune systems throughout the region.