b'AEM 2023Short abstractsunderlying potentially prospective rocks. MultilayeredEnhanced weathering and oxidation modelling in coals by chronostratigraphic interpretation of regional broadintegration of ATEM results with standard coal geoscience line-spaced (~20 km) airborne electromagnetic (AEM)data at Peak Downs Mine, Queensland, Australiaconductivity sections have led to breakthroughs in Australias near-surface geoscience. A dedicated/systematicAmanda Zawada, Jonathan Lowe and Geoffrey Petersworkflow has been developed to characterise the thickness of cover and the depth to basement rocks, by delineatingBHP, Brisbane, QLD, Australiacontact geometries, and by capturing stratigraphic units,Geological processes of alteration such as oxidation and their ages and relationships. Results provide a fundamentalweathering lead to coal quality degradation. In the context of geological framework, currently covering 27% of thecoal mining, this is significant because engineers must optimise Australian continent, or approximately 2 085 000 km2.mine plan designs with respect to waste rock and marketable Delivery as precompetitive data in various non-proprietarycoal. Airborne Transient Electromagnetic Methods (ATEM) can formats and on various platforms ensures that thesebe useful in demarcating a coal seams Limit of Oxidation (LOX) interpretations represent an enduring and meaningfuland add confidence to the related thickness of a weathered contribution to academia, government and industry. Thezone. This study demonstrates an attempt at using state of the outputs support resource exploration, hazard mapping,art, high resolution ATEM data acquired over the Peak Downs environmental management, and uncertainty attribution.Mine to improve upon the positioning of LOX lines, which This work encourages exploration investment, can reducecan be notoriously difficult to model acutely where the coal exploration risks and costs, helps expand search area whilstseams are sub-parallel to the base of weathering estimate. The aiding target identification, and allows users to makeinterpretation techniques applied throughout this study focus on well-informed decisions. Presented herein are some keyusing ATEM results visualised as X and Z component data profiles, findings from interpretations in potentially prospective,compared to laterally constrained conductivity-depth inversions yet in some cases, underexplored regions from aroundand borehole data. Such studies may enable geoscientists to Australia. better inform mine planning and development decisions.AUGUST 2023 PREVIEW 66'