Regional geology and mineral systems of the Stavely region, western Victoria. Data release 6 - Pre-drilling geophysics

Data accompanying the GA Record Regional geology and mineral systems of the Stavely region, western Victoria. Data release 6 - Pre-drilling geophysics. Prior to stratigraphic drilling, existing airborne magnetic data were analysed and new refraction seismic, reflection seismic and gravity data were acquired as part of a pre-drilling geophysical acquisition program. The aim of this geophysical program was to provide cover thickness estimates at the drill site locations prior to the drilling program commencing, in order to reduce the geological and financial risk. Passive seismic data were acquired post-drilling for benchmarking with the other methods against the completed drilling in order to assess a potential tool kit of geophysical methods for the explorer to predict reliably the cover thickness at the tenement scale. This is the first study where multiple geophysical methods are applied to the same site and where full drill core, downhole wireline logging and hyperspectral (HyLogger) data are freely available.

本数据集为维多利亚州西部斯塔夫利（Stavely）区域区域地质与矿产系统GA记录（GA Record）的配套资料，属于第6期数据发布——钻探前地球物理数据集。在启动地层钻探作业前，研究团队对现有航空磁测数据进行了解译分析，并作为钻探前地球物理采集项目的组成部分，获取了全新的折射地震、反射地震与重力勘探数据。本次地球物理项目的核心目标为：在钻探工作正式开展前，测算各钻探点位的覆盖层厚度，以此降低钻探过程中的地质风险与经济成本风险。钻探完成后，研究团队采集了被动地震数据，用于与其他地球物理方法的实测结果开展基准比对，并结合已完成的钻探数据，评估一套可供矿业勘探者使用的地球物理方法组合，以实现在矿业权区块尺度上可靠预测覆盖层厚度。本研究为首次在同一钻探点位同时应用多种地球物理方法，且完整公开全部岩芯、井下电缆测井与高光谱（HyLogger）数据的相关科研案例。