Volume 7, Issue 1 (spring 2003)                   JCPP 2003, 7(1): 73-90 | Back to browse issues page


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M. H. Salehi, H. Khademi, M. Karimian Eghbal. Identification and Genesis of Clay Minerals Soils from Farrokhshahr Area, Chaharmahal & Bakhtiari Province. JCPP. 2003; 7 (1) :73-90
URL: http://jcpp.iut.ac.ir/article-1-385-en.html

Abstract:   (21362 Views)
Clay minerals have considerable effects on physico-chemical properties of soils. Using different techniques, mineralogy of silicate clays and their formation were investigated in selected soils from Chaharmahal and Bakhtiari Province. The study area is about 1300 ha and its soil moisture and temperature regimes are xeric and mesic, respectively. Geomorphologically, the area consists of different landforms including pediments, outwash, hills and piedmont plain. After field and laboratory studies, five representative pedons were selected in previously determined mapping units and samples were taken for the analyses required. Clay particles from two surrounding rock formations and selected soil samples were separated and examined by electron microscopy (SEM and TEM), X-ray diffraction and infrared techniques. Illite, smectite, chlorite, palygorskite and kaolinite were present in all the soils. Considering the fact that palygorskite was not observed in nearby rock formations, this mineral is probably formed by pedogenic processes. Smectite, on the other hand, has been inherited from parent materials and also transformed from palygorskite. Other minerals had been probably inherited from parent materials. Infrared spectra confirm the X-ray diffraction and submicroscopic results.
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Type of Study: Research | Subject: General

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