Rock property data (densities and magnetic susceptibilities) for hand sample and drill core specimens in the Tanami region

Density and magnetic susceptibility measurements were taken from 254 rock samples in the Tanami region to provide rock property constraints during modelling. Multiple measurements were taken for each rock type, in each geological package, in order to provide a statistically representative sample for each package. The samples covered a large geographic portion of the model area, to account for any regional variations in rock properties. Samples selected for measurement were confined to rocks of the Tanami basement and the Birrindudu Group platform cover. Three rock sample datasets were accessed and consist of: Bureau of Mineral Resources (BMR) drill core collected during reconnaissance mapping of the Tanami Region in the early seventies (Blake, 1974) in order to penetrate cover and sample basement rock; NTGS hands samples collected as part their Tanami region project; and NTGS drill core collected as part their Tanami region project.

针对塔纳米（Tanami）区域的254件岩石样品开展了密度与磁化率测量，旨在为建模过程提供岩石物性约束依据。为确保每个地质单元的采样样本具备统计学代表性，研究针对每个地质单元内的各类岩石均开展了多次测量。采样范围覆盖建模区域的大片地理区域，以充分涵盖岩石物性的区域差异。本次测量所选样品仅限定于塔纳米基底（Tanami basement）与比林杜杜群（Birinindudu Group）台地盖层中的岩石。本次研究共获取三套岩石样品数据集，具体包括：矿产资源局（Bureau of Mineral Resources, BMR）于20世纪70年代初开展塔纳米区域踏勘填图时采集的钻孔岩心（Blake, 1974），该套岩心旨在穿透盖层并采集基底岩石样品；北领地地质调查局（Northern Territory Geological Survey, NTGS）作为其塔纳米区域项目组成部分采集的手标本；以及北领地地质调查局（NTGS）同期开展的塔纳米区域项目中采集的钻孔岩心。