DESCRIBING AND DIAGNOSIS OF MICROSTRACTURE SOME MIDDLE EUPHRATES

Abstract

Eight districts were selected in the areas of the Middle Euphates in Babylon , Najaf , Karbala and Qadisiya in the area ,which is located between two.Four of which are cultivated soils and four of these non-cultivated pedons to study,the diagnose and characterize the exact morphological characteristics of these areas, to revealed morphological descriptions of pedons and obtained soil samples not agitated for the study of accurate morphological characteristics. The result of the micromorphological characteristics showed avariation in the composition and classification of the soil , reflecting the nature of the prevailing environmental conditions in the these areas , the results showed that there was a difference in the type and thickness of the genetic horizons of the study pepth and the surface of the Ochric surface horizon. The micromorphological characteristics showed a clear variation in the type of fine construction type shape and size of the pores between the horoizons of the single pedon or between the geometrical region, it is noted that there is a micro structure of the type of complex and granulated grains, as well as the structure of the weak granular and the spherical and the mass angular, as well as the existence of structure of the unstructured type. The results of the thin section showed the existence of a decade of lime and gypsum clusters and forms of spindle , spherical , small and large , some of them pores fillen, as well as the presence of concentrations of iron oxdes and organic material which appeared in light and dark colors. The soil of the study was classified into two order: the modern classification Entisol and the Fluvent and the great Typic Torrifluvent, as well as the Aridisol arid zone ,the Salic , Calcic and Gypsic gain was classified under Gypsid, Salid, Calcid, Haplosalid, Typic Haplocalcid, Typic Haplogypsid it has been classified to the level of series by classification, [5] as the series were as follows: DW34, DW22, DM125,TW1135,TW1143,MM12.