Annual technical report on EL 27138 Cooloola for period 18 September 2009 to 17 September 2010

Abstract

In July 2010 Toro Energy commissioned Geoforce to carry out a SkyTEM airborne electromagnetic (AEM) survey over EL 27138, covering 1625 km2. The collaborative geophysical survey between Toro Energy and the NT Department of Resources involved the acquisition, processing and interpretation of approximately 1100 line kilometres (1500m line spacing) of helicopter-borne electromagnetics. The SkyTEM system was preferred because it captures calibrated shallow high-resolution and deep-penetrating EM data that is highly suited to quantitative geological interpretation. Other systems either resolve too deep (VTEM) or too shallow (Tempest). SkyTEM is also quite cost effective for a heliborne system. SkyTEM has proven effective in mapping sandstone packages elsewhere and has been used effectively to target roll-front style uranium mineralisation in Australia and overseas. The proposed AEM survey will add substantially to the overall geological understanding of the Wiso Basin and it's juxtaposition with the Arunta Inlier. It will more clearly define the orientation of the basin edge and the architecture of the basin immediately to the north. Full interpretation has yet to be carried out.