International Journal of Agricultural Policy and Research
Vol.7 (4), pp. 80-90, July 2019
Available online at https://www.journalissues.org/IJAPR/
Author(s) retain the copyright of this article. Author(s) agree that this article remain permanently open access under the terms of the Creative Commons Attribution License 4.0 International License.
Original Research Article
Study of soils formation origin based on mineralogical studies (A case study: Marand region, Iran)
Ommolbanin Jafari Tarf 1*, Ali Asghar Jafarzadeh2 and Ayda Abbasi3
1Soil Science Department Faculty of Agriculture, Islamic Azad University Karaj Branch, Iran.
2Soil Science Department, Faculty of Agriculture, University of Tabriz, Iran.
3Soil Science Department Faculty of Agriculture, University of Mohaghegh Ardabili, Iran
*Corresponding Author: E– mail: emy.jafari(at)yahoo.com.tr
Parent material is considered as the most important soil forming factor in arid and semiarid regions. This study was carried out to determine the effect of parent materials on the origin of soil formation and evolution of studied soils. Four different locations in the North East of Marand region were selected for excavation and description of soil profiles. Then, soil samples were taken and soil physicochemical and mineralogical properties were determined for representative profiles and their related parent rocks. X-ray diffraction (XRD) patterns revealed that the soils were similar in clay-mineral compositions, consisting of illite, smectite, chlorite, kaolinite, and quartz for the different profiles, but vary in the relative amounts of these minerals. Also, XRD analysis of powder refers mainly to the presence of calcite and feldspar with aforementioned clay minerals. Clay mineralogy showed that smectite, illite, chlorite, kaolinite and mica (except 2Bk horizon sample of profile 4) were present in all the soils studied and seem to be inherited from parent materials by weathering processes. Also, a little amount of smectite in profile 1 (B sample) has pedogenic origin. Briefly, mineralogical characteristics showed that soil formation was mainly lithologic origin than pedogenic.
Key words: Autogenic, parent material, soil physical and chemical properties, clay mineralogy, soil taxonomy