The alluvial fan sediments play a very important role in mineral reserves and underground water resources, though a comprehensive study on such sediments, specially on geochemical point of view, is still lacking. In this research, a total of 22 particularly important alluvial fans across the Khuzestan plain in the southwestern Iran were studied through field survey, petrographic evaluations and geochemical assessments. These investigations included particle size distribution studies, microscopic observation of 193 samples, subsurface study of 60 boreholes along 10 different sections, facies analysis on 46 different sections, and comprehensive geochemical studies through XRD, XRF, ICP-Mass and wet chemical analysis. Based on these studies, the sediments were found to be dominantly gravel, muddy sand, silt and clay. The sediments exhibited good roundness and good to fair sorting. The most abundant oxide in the study area being MgO followed by SiO2, Al2O3 and Fe2O3.According to the studies, most of the samples fell in the range of iron-bearing sandstones with rare cases of iron-bearing shales.

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