AusAEM1 Interpretation Data Package

The AusAEM1 airborne electromagnetic survey extends across an area exceeding 1.1 million km2 over Queensland and the Northern Territory. Approximately 60,000 line kilometres of data were acquired at a nominal line spacing of 20 km (Ley-Cooper et al., 2020). To improve targeting and outcomes for mineral, energy and groundwater exploration, we conducted a regional interpretation of this dataset to characterise the subsurface geology of northern Australia. The interpretation includes the depth to chronostratigraphic surfaces, compilation of stratigraphic relationship information, and delineation of structural and electrically conductive features. In addition to help connecting correlative outcropping units separated by up to hundreds of kilometres, the results led to 3D mapping of palaeovalleys and prompted further investigation of electrical conductors and their relationship to structural features and mineralisation. Approximately 200,000 regional depth point measurements, each attributed with detailed geological information, are an important step towards a national geological framework, and offer a regional context for more detailed, smaller-scale AEM surveys. Refer to Wong et al., (2020) for more details on the AusAEM1 interpretation.

AusAEM1航空电磁测量数据集覆盖昆士兰州与北领地境内超过110万平方千米的区域。该数据集采集了约6万测线公里的数据，标称测线间距为20千米（Ley-Cooper等，2020）。为提升矿产、能源与地下水勘探的靶区定位效果及勘探成效，我们对该数据集开展了区域解译工作，以刻画澳大利亚北部的地下地质特征。本次解译内容涵盖年代地层界面埋深、地层接触关系信息汇编，以及构造特征与导电异常体的圈定。本次解译成果不仅可关联相隔可达数百千米的相关露头单元，还完成了古河谷的三维填图，并推动了针对导电异常体及其与构造特征、矿化作用之间关联的后续研究。共计约20万个附带详细地质信息的区域深度点测量数据，是构建国家地质框架的重要阶段性成果，同时也为更精细的小尺度航空电磁（Airborne Electromagnetic, AEM）测量提供了区域地质背景。有关AusAEM1解译工作的更多细节，可参考Wong等（2020）的相关研究。

搜集汇总

背景与挑战

背景概述

AusAEM1解释数据包是一个基于大规模航空电磁测量的区域地质解释数据集，覆盖澳大利亚昆士兰和北领地超过110万平方公里区域，旨在通过分析深度点测量和地质特征来改善矿产、能源和地下水勘探。该数据集包括约20万个附有详细地质信息的深度点，用于构建国家地质框架，并为小尺度调查提供区域背景，支持对地层、结构和导电特征的综合解释。