Article (Scientific journals)
Origin and distribution of clay minerals of soils in semi-arid zones: example of Ksob watershed (Western High Atlas, Morocco)
Omdi, F. E.; Daoudi, L.; Fagel, Nathalie
2018In Applied Clay Science, 163, p. 81-91
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Keywords :
Clay mineralogy; Parent rock; Semi-arid zone; Soils; Texture; Topography; Arid regions; Clay deposits; Climatology; Kaolinite; Particle size; Particle size analysis; Textures; Watersheds; Dioctahedral smectite; Mineralogical compositions; Organic matter content; Parent materials; Semi-arid climate; Semiarid zone; Soil environment; Atlas Mountains; High Atlas; Morocco
Abstract :
[en] The Ksob basin watershed is located in a region with a semi-arid climate; it is characterized by large area, variable geology and clay mineralogy, variable topography and different types of thin soils. In the aim to determine the origin and distribution of clay mineral of soils of this basin, three types of samples were considered in this study; the parent rock, the different horizon of soils and the recent river deposit. Clay mineralogical composition, particle size distribution, soil texture, carbonate, moisture and organic matter content (SOM), pH and conductivity were measured to identify the soil properties. Chlorite and illite of the studied soils basin were principally inherited from the parent materials, while vermiculite was principally formed in the soil environment. The other phases (dioctahedral smectite, illite-smectite mixed layers, kaolinite and palygorskite) can result from both inheritance and transformation. Ttrioctahedral smectite and palygorskite can also results from neoformation. Carbonate, SOM content and pH of the studied soils vary independently with clay mineralogy. However soils texture, parent rock, topography and climate strongly influence soil clay mineralogy and its evolution. © 2018
Research center :
Geology - GEOLOGY
Disciplines :
Earth sciences & physical geography
Author, co-author :
Omdi, F. E.;  Laboratoire de Géosciences et Environnement, Faculty of Sciences and Techniques, Cadi Ayyad University, Marrakech, BP 549, Morocco
Daoudi, L.;  Laboratoire de Géosciences et Environnement, Faculty of Sciences and Techniques, Cadi Ayyad University, Marrakech, BP 549, Morocco
Fagel, Nathalie  ;  Université de Liège - ULiège > Département de géologie > Argiles, géochimie et environnements sédimentaires
Language :
English
Title :
Origin and distribution of clay minerals of soils in semi-arid zones: example of Ksob watershed (Western High Atlas, Morocco)
Publication date :
2018
Journal title :
Applied Clay Science
ISSN :
0169-1317
eISSN :
1872-9053
Publisher :
Elsevier Ltd
Volume :
163
Pages :
81-91
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
WBI - Wallonie-Bruxelles International [BE]
Available on ORBi :
since 01 July 2019

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