Clay mineralogy of representative sodic soils of the Zambezi Valley

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Authors:Nyamapfene, K. W.; Gomes, C. S. F.
Author Affiliations:Primary:
Univ. Zimbabwe, Dep. Land Management, Zimbabwe
Volume Title:Garcia de Orta, Serie de Geologia
Source:Garcia de Orta, Serie de Geologia, 8(1-2), p.7-12. Publisher: Junta de Investigacoes Cientificas do Ultramar, Lisbon, Portugal. ISSN: 0378-1240
Publication Date:1985
Note:In English with Portuguese summary. 13 refs.; illus., incl. 2 tables
Summary:The sodic soils derived from various Karroo sediments (mainly grits and sandstones) in the Zambezi valley are described. This study shows the clay fraction to be dominated by mica (illite) and kaolinite with some smectite occurring in the clays of the more alkaline soils. The mineralogy of the soils is thought to have originated directly from the micaceous parent material which is also rich in feldspars. [L.A.B.]
Subjects:Alkalic composition; Clay minerals; Illite; Kaolinite; Karoo Supergroup; Mineral composition; Pedogenesis; Sheet silicates; Silicates; Soil profiles; Soils; Africa; Southern Africa; Zambezi Valley; Zimbabwe; Sodic composition
Abstract Numbers:89M/1591
Record ID:2004082223
Copyright Information:GeoRef, Copyright 2019 American Geosciences Institute. Reference includes data from Mineralogical Abstracts, United Kingdom, Twickenham, United Kingdom, Reference includes data from PASCAL, Institute de l'Information Scientifique et Technique
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