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THE spatial distribution pattern of an element content is controlled by various geochemical pro-cesses. Studies on the spatial pattern are beneficial to further analysis on the factors. As a re-sult, our knowledge about the geochemical processes is enriched. At the same time, describingthe spatial patterns quantitatively with some indices is one way from qualitative to quantitativeanalysis.
The spatial distribution pattern of an element content is controlled by various geochemical pro-cesses. Studies on the spatial pattern are beneficial to further analysis on the factors. As a re-sult, our knowledge about the geochemical processes is enriched. At the same time describing describing spatial patterns quantitatively with some indices is one way from qualitative to quantitative analysis