Pb-Pb Isotopes - Pb208/Pb206 Grid (Regolith) December 2023

This is an interpolated grid of Pb-Pb isotope data (Pb208/Pb206) obtained from the analysis of Australian regolith samples. The point data used for the interpolation are from the Pb-Pb regolith dataset held in Geoscience Australia's Isotopic Atlas as of December 2023. Point data added to the Isotopic Atlas after December 2023 is not represented in this grid. The grid is an ‘Inverse distance weighting’ (IDW) interpolation produced with the Grid (IDW with Nearest Neighbor Searching) or invdistnn GDAL tool in QGIS, with a weighting power of 2 and minimum/maximum nearest neighbouring points of 6/12. For more information, see https://doi.org/10.5194/essd-2023-357.

本数据集为基于澳大利亚风化壳样品分析得到的铅-铅同位素数据（Pb208/Pb206）所构建的插值网格。本次插值所用的点位数据，源自2023年12月时收录于澳大利亚地质调查局（Geoscience Australia）同位素图集（Isotopic Atlas）中的铅-铅风化壳数据集。2023年12月之后新增至该同位素图集的点位数据，未被纳入本次插值网格。该网格采用反距离加权（IDW）插值方法生成，具体使用QGIS软件中的Grid（带最近邻搜索的反距离加权）工具或GDAL的invdistnn工具完成插值，设置的加权幂值为2，最近邻点的最小/最大数量分别为6和12。如需获取更多详细信息，请访问：https://doi.org/10.5194/essd-2023-357。