Abstract Analysis of stream sediment geochemical data has undergone a series of developments during last decades. As a matter of fact, many factors can potentially influence the chemical composition of these sediments and the existing techniques are not able to fully explain compositional variations occurring along with their transport. By applying some recently developed equations, this paper takes into account the topographical relief and the morphological surface areas of outcropping lithological units to both estimate local geochemical background values and delineate promising zones in terms of mineral exploration. Specifically, through the combination of a three-dimensional sample catchment analysis with dilution correction equation, the process of delineating catchment basins featured by economically relevant Cu occurrences has been improved. The effectiveness of the technique has been evaluated through the application of the prediction-area plot obtaining better results than applying the two-dimensional approach.

中文翻译：

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通过在地球化学异常圈定中加入修正的稀释校正方程对集水盆地进行 3D 分析

摘要 河流沉积物地球化学数据分析在过去的几十年中经历了一系列的发展。事实上，许多因素可能会影响这些沉积物的化学成分，现有技术无法完全解释随其运输而发生的成分变化。本文通过应用一些最近开发的方程，考虑到出露岩性单元的地形起伏和形态表面积，以估计当地的地球化学背景值，并在矿产勘探方面划定有前景的区域。具体而言，通过三维样本流域分析与稀释校正方程相结合，改进了以经济相关的铜矿床为特征的流域盆地的划定过程。