Clay Mineralogy in Soils of Zagros Region (Case Study: Gelsefid Village of Ardal Township in Chaharmahal and Bakhtiari Province)

Hossein Torabi Golsefidi | Zahra Piranian

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URL :   http://research.shahed.ac.ir/WSR/WebPages/Report/PaperView.aspx?PaperID=159229
Date :  2021/10/20
Publish in :    هفدهمين کنگره علوم خاک ايران و چهارمين همايش ملي مديريت اب در مزرعه

Link :  https://civilica.com/doc/1312250/
Keywords :Smectite, Illite, Soil profile, Chlorite, Kaolinite

Abstract :

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The aim of this study was to investigate the clay mineralogy of soils formed on 4 parent material, including BAKHTIARI, TARBUR, ASMARI-JAHRUM formations and colored Marl with intercalation of gravels in different landscape of Central Zagros. This study was carried out in Gelsefid Village of Ardal Township in Chaharmahal and Bakhtiari Province. 28 profiles from different landscape and landforms were dug, described, and sampled. Clay fraction was separated by Kittrick and Hope methods in 6 selected profiles. XRD analysis were done in 2Ɵ, 2 to 40 degree by X-ray Diffractometer. The results of clay mineralogy showed that chlorite, illite and kaolinite exist in all of the soils and their parent materials. So, it can be said that the most of these minerals were inherited from parent material, especially kaolinite. Based on evidences, some of smectites were inherited from parent rocks and others, were created by simple transformation from mica and chlorite. Contrary to popular perception, the predominant clay mineral was not smectite in Vertiols of the study area. The predominant Clay minerals in Vertisols were illite, chlorite, kaolinite and a little of vermiculite and smectite.

https://civilica.com/doc/1312250/