Chemical and mineralogical properties of soils in southeastern Nigeria in relation to aggregate stability

The objective of this study was to relate the major chemical and mineralogical properties of soils formed on sedimentary deposits in southeastern Nigeria to the stability of their aggregates at both the macro and micro (colloidal) levels. Five profiles and twenty-five topsoil samples representing fo...

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Bibliographic Details
Published in:Geoderma 1999-09, Vol.92 (1), p.111-123
Main Authors: Igwe, C.A, Akamigbo, F.O.R, Mbagwu, J.S.C
Format: Article
Language:English
Subjects:
aggregate stability
chemical properties
Earth sciences
Earth, ocean, space
Exact sciences and technology
Geochemistry
mineralogy
sedimentary formations
Soil and rock geochemistry
soil structure
Soils
Surficial geology
tropics
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Summary:The objective of this study was to relate the major chemical and mineralogical properties of soils formed on sedimentary deposits in southeastern Nigeria to the stability of their aggregates at both the macro and micro (colloidal) levels. Five profiles and twenty-five topsoil samples representing four major geological formations were studied. The soils are classified as Entisols and Ultisols. The soils are low in exchangeable cations. At both the macro and colloidal levels of aggregation, these cations and CEC were found not to have any positive influence on structural stability. A positive correlation coefficient ( r=0.86) existed between Fe 2O 3 and Aggregated Silt+Clay (ASC) and water-unstable aggregates (WSA)
ISSN:0016-7061
1872-6259
DOI:10.1016/S0016-7061(99)00029-4