Lutetium isocontent map (Geochemical Atlas of Spain, 2012)

Iso-content maps of Lutetium (Lu), one of the chemical elements.obtained in the Geochemical Atlas of Spain Project, distributed in stream sediments (14,864 samples), superficial soils (0-20 cm.) (13,505 samples) and deeper soils (20-40 cm.) (7,682 samples). The results of the chemical analysis are shown in two types: total dissolution of the sample with 4 acids and partial dissolution with aqua regia. With the analytical results of all the sampled points, an isocontent map is made with adjustment to a square grid of 1,000 m by the method of interpolation of the inverse of the squared distance. The final result is a map for each type of sample and type of analysis carried out.本数据集为化学元素镥（Lutetium, Lu）的等值含量分布图，源自西班牙地球化学图集项目。其采样介质涵盖河流沉积物（14864件样品）、浅层土壤（0-20厘米，13505件样品）及深层土壤（20-40厘米，7682件样品）。该数据集的化学分析结果分为两类：一是采用四酸法对样品进行全消解，二是采用王水进行部分消解。基于所有采样点的分析结果，研究人员采用反距离平方插值法，将数据插值至1000米×1000米的正方形格网，进而生成等值含量分布图。最终生成的成果为对应每类采样介质与每类分析方式的专属等值含量分布图。