IGO Core Geophysics Collaboration Final Report

Abstract

An airborne magnetic-radiometric survey totaling 41,611 line km was flown to increase the resolution of the magnetic data along the Willowra Gravity Ridge to detect mafic intrusions that may host Magmatic Ni, Cu, Co sulphide deposits. The survey was orientated north-south and flown at 100m line spacing with a nominal terrain clearance of 35m, with 1000m tie lines. The survey commenced on 3 December 2018 and was completed on 18 December 2018. The aeromagnetic survey will be used to interpret mafic intrusions that may host mineralisation and generate a lithostructural basement interpretation. Additional modelling and other products can be used to estimate depth to magnetic basement, and the radiometrics will assist in identifying alteration in areas of outcrop and sub-crop. At this stage a detailed interpretation has not been completed because it will be done in conjunction with the adjoining NTGS/GA infill survey once that data is made available.