Zonal mineralogical/geochemical characteristics of soils ofMidwestern Nigeria

Imasuen, O.I.; Fyfe, W. S.; Olorunfemi, B.N.; Asuen, GO

doi:10.1016/s0899-5362(89)80007-7

Cited by 7 publications

(5 citation statements)

References 10 publications

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“…The REE concentrations found are in good agreement with those found by [25] for soils from Nigerian semi-savanna and rain forest regions.…”

Section: Resultssupporting

confidence: 85%

Instrumental Neutron Activation Analysis (INAA) As-sessment of REE of Soil from Mining Site Umuahia, Abia State, South East, Nigeria

Onudibia,

Silva,

Essiett

et al. 2024

Braz. J. Rad. Sci.

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In this work, the main goal was to examine the REE concentration and distribution pattern in soil from Umuahia, Abia State, Southeast, Nigeria, in a clay mining site compared with a non-contaminated site approximately 3 km away. The REE were determined by Instrumental Neutron Activation Analysis (INAA) at IPEN, Brazil. The main mineralogy of the samples was determined by XRD. The following REE were determined: Ce, Eu, La, Lu, Nd, Sm, Tb and Yb. Soil samples from the mining area present quartz and kaolinite as their main constituents, with REE concentrations comparable with that of the Upper Continental Crust and the North American Shale Composite. The calculated Geoaccumulation index (IGeo) indicate that REE have natural origin and ∑LREEN/∑HREEN ratio show an enrichment of the light over heavy REE, in samples of the clay mining area.

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“…The REE concentrations found are in good agreement with those found by [25] for soils from Nigerian semi-savanna and rain forest regions.…”

Section: Resultssupporting

confidence: 85%

Instrumental Neutron Activation Analysis (INAA) As-sessment of REE of Soil from Mining Site Umuahia, Abia State, South East, Nigeria

Onudibia,

Silva,

Essiett

et al. 2024

Braz. J. Rad. Sci.

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“…Figure 5 shows that both the temperature and pH values of soils across Edo State, Nigeria, correlate with the magnesia composition of the soils. The more the MgO content of the soil, the higher the pH, a fact which is in consonance with the findings of (Imasuen et al, 1989b). It is quite clear from the data obtained in this study that most soils in Edo State, Nigeria are acidic and hence are characterized by low cation retention and buffering capacities, probably due to their high leaching potentials.…”

supporting

confidence: 89%

“…The mineralogical and chemical characteristics of any soil are known to influence the performance of the soil in agriculture and engineering (Imasuen et al 1989b). Clay mineral composition and such physical characteristics as particle size distribution, organic matter content and geologic history also influence their agricultural productivity and engineering performance.…”

mentioning

confidence: 99%

“…However, it is arguable that liming could result in a sharp decrease in the Mg concentration of the soil. On the other hand, the application of the kaolinite -smectite conversion mechanism (Imasuen et al, 1989b) will not only provide the suitable pH condition in the soil system but will also increase the capacity for cation retention and eliminate aluminium toxicity (Imasuen, et al, 1989a). The only snag with the conversion is that it is expensive to apply on a large -scale transformation under typical tropical soil temperature conditions; also it is achievable within a duration of over 25 years However, the use of rock powder from Mg-bearing rocks e.g serpentinite and olivine basalt with the clay soils acting as inert carriers would be cheaper while effecting a good degree of in situ conversion.…”

mentioning

confidence: 99%

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Chemical Compositions of Soils in Parts of Edo State, Southwest Nigeria and their Relationship to Soil Productivity

Imasuen¹,

Onyeobi²

2013

Journal of Applied Sciences and Environmental Management

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Thirty eight (38) soil samples taken from locations accessible to the BeninOluku -Ifon -Uzebba -Afuze -Auchi -Ukpilla -Okene highway, covering a distance of approximately 185 kilometres and an area of about 12,000 square kilometers were subjected to chemical and mineralogical analyses with a view to determining the variability of their fertility status within the rainforest and savannah vegetational zones. Results show that the soils of the area consist predominantly of quartz, kaolinite, feldspar and sesquioxides of aluminium and iron, including goethite. They are generally acidic with very low cation retention and buffering capacities. Higher concentrations of the major oxides MgO, CaO and K 2 O were recorded in soils of the savannah zone while the soils of the rainforest zone are relatively deficient in these oxides. A chemical productivity index (CPI) of MgO + CaO + K 2 O/Al 2 O 3 is proposed for the soils of the area of study. @ JASEM http://dx.doi.org/10.4314/jasem.v17i3.6

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“…This question cannot easily be answered because of a lack of data from systematic surveys of trace elements in tropical soils. Imasuen et al [39] sampled 38 soils along a 185-km transect in Nigeria. The transect spanned three vegetational zones, namely, semisavanna, transitional, and rain forest.…”

Section: Micronutrient Limitations In Tropical Agriculturementioning

confidence: 99%

Deficiencies and toxicities of trace elements and micronutrients in tropical soils: Limitations of knowledge and future research needs

Davies

1997

Enviro Toxic and Chemistry

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Abstract-This article reviews present knowledge concerning deficiencies and toxicities of trace elements and micronutrients in tropical soils. The myth that all tropical soils are highly leached and nutrient-poor is challenged. Continuing use of the term ''laterite'' by ecologists and geologists is criticized and adoption of ''plinthite'' is urged. The trace element content of plinthite and its possible influence on micronutrient availability are described. Micronutrient limitations of tropical agriculture are related to soil type and formation, and the special problem of aluminum toxicity in acid soils is discussed in both agricultural and ecological contexts. Studies of micronutrient cycling in tropical forests or savannas are needed to supplement the emerging picture of the complexities of major element cycles in these ecosystems. Interest in gold mining has stimulated studies of the element in tropical soils, and mining of the metal is leading to mercury pollution in Amazonia.

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Zonal mineralogical/geochemical characteristics of soils ofMidwestern Nigeria

Cited by 7 publications

References 10 publications

Instrumental Neutron Activation Analysis (INAA) As-sessment of REE of Soil from Mining Site Umuahia, Abia State, South East, Nigeria

Instrumental Neutron Activation Analysis (INAA) As-sessment of REE of Soil from Mining Site Umuahia, Abia State, South East, Nigeria

Chemical Compositions of Soils in Parts of Edo State, Southwest Nigeria and their Relationship to Soil Productivity

Deficiencies and toxicities of trace elements and micronutrients in tropical soils: Limitations of knowledge and future research needs

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