Differentiation sedimentological environments of soil series materials within irrigation and river basins from middle-mesopotamian

Abstract

This work was carried out in East Gharaf lands which were limited with 45 50 30 " , 45 57 30 " longitudes and 32 45 15 " , 32 45 35 " latitudes . Parameters of sorting of soil material separates were used in terms of ( median diameter , inclusive graphic standared deviation бI , inclusive graphic skewness skI , kurtosis and tranformed kurtosis ) to study the statuse of soil material sorting . Stewart diagrams were used for the differenetiation of sedimentation environments .These digrams showed that , sdiments were of one main sedimentation environments ( ie river environments ) . In , addition the sediments grouped in two subenvironment clusters within the main sedimentation environment provence .These subenveronments were of fine separates sedimentation (river sediment) and medium to coarse separates sedimentation (irrigation sediments) . Both sediments are recent and local physiographic units .Sediments of soil materials were characterized and correlated to their sedimentation environments by the use of triangular diagrams and illustrated in terms of the relative percentages of light minerals ( chert , feldspars , biotiet ) fractions and heavey minerals (pyroxenes, garnet , chlorite) in order to assure their sedimentation environments . Accordingly , it can be suggested that , the use of light minerals gave better distinction and differentiation between sediments of river and irrigation basins . Also ,the soil use of separetes were the best in the differentiation between the subenvironments of sedimentation of river and irrigation sediments .