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Paper Information

Journal:   IRAN AGRICULTURAL RESEARCH   2002 , Volume 21 , Number 1; Page(s) 39 To 60.
 
Paper: 

GENESIS AND DISTRIBUTION OF PALYGORSKITE AND ASSOCIATED CLAY MINERALS IN RAFSANJAN SOILS ON DIFFERENT GEOMORPHIC SURFACES

 
 
Author(s):  FARPOUR M.H., KHADEMI H., KARIMIAN EGHBAL M.
 
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Abstract: 
Palygorskite is a mineral of great importance in arid and semi arid soils and sediments~ This fibrous clay mineral has been reported in Iranian Aridisols. The main objective of this study was to determine the presence and the origin of palygorskite in Rafsanjan soils in central Iran and to study the relationship between this clay mineral and geomorphic surfaces. Soils occurring on two perpendicular transects were studied. The first transect is located in Nough area, 30 km north of Rafsanjan, and the second one extends to Ali-Abad village 20 km south of Rafsanjan valley. Palygorskite, illite, chlorite, smectite, and quartz were observed in all soils using XRD; TEM, and EDX analyses. In the first transect, palygorskite crystals: decreased in number and size from east (rock pediment) to the west (mantled pediments and playas). A trace amount of smectite was found in rock pediment position; in contrast, there was more smectite in other soil profiles. Due to more precipitation in the area of second transect, CaCO3 illuviation has been occurring. Besides, palygorskite has easily been weathered and transformed to smectite. On the other hand, highly smectitic Marl formations resulted in greater amount of this mineral in the second transect as compared to the first one.
 
Keyword(s): PALYGORSKITE, GEOMORPHOLOGY, WEATHERING, CENTRAL IRAN
 
 
References: 
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APA: Copy

FARPOUR, M., & KHADEMI, H., & KARIMIAN EGHBAL, M. (2002). GENESIS AND DISTRIBUTION OF PALYGORSKITE AND ASSOCIATED CLAY MINERALS IN RAFSANJAN SOILS ON DIFFERENT GEOMORPHIC SURFACES. IRAN AGRICULTURAL RESEARCH, 21(1), 39-60. https://www.sid.ir/en/journal/ViewPaper.aspx?id=116472



Vancouver: Copy

FARPOUR M.H., KHADEMI H., KARIMIAN EGHBAL M.. GENESIS AND DISTRIBUTION OF PALYGORSKITE AND ASSOCIATED CLAY MINERALS IN RAFSANJAN SOILS ON DIFFERENT GEOMORPHIC SURFACES. IRAN AGRICULTURAL RESEARCH. 2002 [cited 2021December04];21(1):39-60. Available from: https://www.sid.ir/en/journal/ViewPaper.aspx?id=116472



IEEE: Copy

FARPOUR, M., KHADEMI, H., KARIMIAN EGHBAL, M., 2002. GENESIS AND DISTRIBUTION OF PALYGORSKITE AND ASSOCIATED CLAY MINERALS IN RAFSANJAN SOILS ON DIFFERENT GEOMORPHIC SURFACES. IRAN AGRICULTURAL RESEARCH, [online] 21(1), pp.39-60. Available: https://www.sid.ir/en/journal/ViewPaper.aspx?id=116472.



 
 
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