Publication Name: Australasian Exploration Geoscience Conference 2019
Authors: Walid Salama*, Ravi Anand, Tsing Bohu
Date Published: September 2019
Number of Pages: 4
Abstract:
The most northeastern Yamarna Terrane consists of deeply weathered Archean basement and is covered by weathered Permian glacial sediments and recent aeolian sand dunes. This transported cover setting and regolith-landscape influences the effectiveness of metal migration mechanisms in and through cover, and hence the selection of the best sample media for exploration. The development of authigenic ferruginous pisoliths near-surface in the aeolian sands and Permian sediments identifies proximal Au and As anomalies over Au mineralisation in the Yamarna Terrane. An arsenic anomaly was also delineated using Eucalyptus foliage over the mineralisation. Furthermore, sampling across the unconformity between Permian sediments and saprolite or bedrock also identified an Au anomaly in areas where pisoliths are transported.