Resistivity structures derived from AusLAMP magnetotellurics data in Queensland

Geoscience Australia’s Exploring for the Future program provides precompetitive information to inform decision-making by government, community and industry on the sustainable development of Australia's mineral, energy and groundwater resources. By gathering, analysing and interpreting new and existing precompetitive geoscience data and knowledge, we are building a national picture of Australia’s geology and resource potential. This leads to a strong economy, resilient society and sustainable environment for the benefit of all Australians. This includes supporting Australia’s transition to net zero emissions, strong, sustainable resources and agriculture sectors, and economic opportunities and social benefits for Australia’s regional and remote communities. The Exploring for the Future program, which commenced in 2016, is an eight year, $225m investment by the Australian Government.As part of Exploring for the Future (EFTF) program with contributions from the Geological Survey of Queensland, long-period magnetotelluric (MT) data for the Australian Lithospheric Architecture Magnetotelluric Project (AusLAMP) were collected using Geoscience Australia's LEMI-424 instruments on a half-degree grid across Queensland from April 2021 to November 2022. This survey aims to map the electrical resistivity structures in the region. These results provide additional information about the lithospheric architecture and geodynamic processes, as well as valuable precompetitive data for resource exploration in this region.This data release package includes processed MT data, a preferred 3D resistivity model projected to GDA94 MGA Zone 54 and associated information for this project.The processed MT data were stored in EDI format, which is the industry standard format defined by the Society of Exploration Geophysicists. The preferred 3D resistivity model was derived from previous EFTF AusLAMP data acquired from 2016-2019 and recently acquired AusLAMP data in Queensland. The model is in SGrid format and geo-referenced TIFF format.

澳大利亚地质科学局（Geoscience Australia）的“未来勘探”（Exploring for the Future）项目可提供预竞争性信息，为政府、社区及行业开展澳大利亚矿产、能源与地下水资源的可持续开发决策提供依据。项目团队通过收集、分析与解读全新及现有预竞争性地球科学数据与认知成果，正逐步构建覆盖全澳大利亚的地质与资源潜力图景。此举旨在为全体澳大利亚民众打造强劲的经济、富有韧性的社会与可持续的环境，具体包括支撑澳大利亚向净零排放转型，巩固可持续发展的资源与农业产业，同时为澳大利亚区域及边远社区创造经济机遇与社会福祉。“未来勘探”项目始于2016年，是澳大利亚政府投入2.25亿澳元、为期八年的投资项目。
作为“未来勘探”（Exploring for the Future，简称EFTF）项目的组成部分，该项目获得昆士兰州地质调查局的资助。澳大利亚岩石圈架构大地电磁项目（Australian Lithospheric Architecture Magnetotelluric Project，简称AusLAMP）的长周期大地电磁（magnetotelluric，MT）数据，于2021年4月至2022年11月期间，依托澳大利亚地质科学局的LEMI-424型仪器，以半度网格布设于昆士兰州境内完成采集。本次勘测旨在绘制该区域的电阻率结构分布。相关成果不仅可为岩石圈架构与地球动力学过程研究提供补充信息，还可为该区域的资源勘探提供极具价值的预竞争性数据。
本次数据发布包包含经处理的大地电磁数据、投影至GDA94 MGA第54带的优选三维电阻率模型，以及本项目的相关配套资料。经处理的大地电磁数据以行业标准格式EDI格式存储，该格式由国际勘探地球物理学家学会（Society of Exploration Geophysicists）制定。本次优选的三维电阻率模型，整合了2016至2019年间采集的EFTF AusLAMP历史数据，以及近期在昆士兰州获取的AusLAMP新数据。该模型采用SGrid格式与地理参考TIFF格式存储。