Thorium isocontent map (Geochemical Atlas of Spain, 2012)
Iso-content maps of Thorium (Th), 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.
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The main objective of this project, co-financed with funds from the European Economic Area (EEA), has been to develop a geochemical knowledge base of the surface materials (stream sediments and soils) of the national territory, both continental and insular, which will allow us to tackle with the necessary information the problems that, for both ecosystems and public health, derive from soil contamination and those related to the geology and mineral resources of Spain.
Isocontent maps of the chemical elements obtained in the Geochemical Atlas of Spain Project, distributed in stream sediments (14,864 samples), shallow 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.