Genesis of a mottled horizon by Fe-depletion within a laterite cover in the Amazon Basin
作者： Vania Rosolen , Mathieu Lamotte , René Boulet , Jean Trichet , Olivier Rouer
DOI: 10.1016/S1631-0713(02)01721-2
关键词: Microanalysis 、 Soil horizon 、 Laterite 、 Geology 、 Cambisol 、 Horizon (archaeology) 、 Sedimentary rock 、 Mineralogy 、 Dissolution 、 Duricrust
摘要: Abstract A mottled horizon in a laterite cover (without any duricrust) was studied by microscopy and quantitative chemical microanalysis. Apart from the voids, light red spots consisting of Fe-rich particles (≈2 μm) are set clayey plasma. Dark consisted concentrations particles. These patterns inherited. On border structural or biological where Fe-depletion features systematic, gray yellow result dissolution impregnation plasma iron, respectively. The present is dominant process that explains differentiation absence lateritic duricrust. To cite this article: V. Rosolen et al., C. R. Geoscience 334 (2002) 187–195.
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sci-hub.se 参考文章(17)
Y. Tardy, Diversity and terminology of lateritic profiles Developments in earth surface processes. ,vol. 2, pp. 379- 405 ,(1992) , 10.1016/B978-0-444-89198-3.50020-9
W. G. Sombroek, Soils of the Amazon region The Amazon. pp. 521- 535 ,(1984) , 10.1007/978-94-009-6542-3_20
正夫 岩崎, Introduction to the Petrology of Soils and Chemical Weathering (土と化学的風化の岩石学入門) Daniel B.,Nahon, John Wiley & Sons, Inc. N. Y., 1991年発行, A5判, 313ページ, 日本国内価格消費税込み 12,967円. Journal of the Geological Society of Japan. ,vol. 98, pp. 555- ,(1992)
Jean-Claude Leprun, Les cuirasses ferrugineuses des pays cristallins de l'Afrique occidentale sèche : genèse, transformations, dégradation Sciences Géologiques, bulletins et mémoires. ,vol. 58, ,(1979)
G. J. J. Aleva, Laterites: concepts, geology, morphology and chemistry. Laterites: concepts, geology, morphology and chemistry.. pp. 169- ,(1994)
Anicet Beauvais, Geochemical balance of lateritization processes and climatic signatures in weathering profiles overlain by ferricretes in Central Africa Geochimica et Cosmochimica Acta. ,vol. 63, pp. 3939- 3957 ,(1999) , 10.1016/S0016-7037(99)00173-8
M. J. McFarlane, Laterite and landscape ,(1976)
J.P. Ambrosi, D. Nahon, A.J. Herbillon, The epigenetic replacement of kaolinite by hematite in laterite — petrographic evidence and the mechanisms involved Geoderma. ,vol. 37, pp. 283- 294 ,(1986) , 10.1016/0016-7061(86)90030-3
J.P. Ambrosi, D. Nahon, Petrological and geochemical differentiation of lateritic iron crust profiles Chemical Geology. ,vol. 57, pp. 371- 393 ,(1986) , 10.1016/0009-2541(86)90059-8
F.O. Nachtergaele, J.A. Deckers, O.C. Spaargaren, P.M. Driessen, World Reference Base for Soil Resources Encyclopedia of Soil Science. pp. 1446- 1451 ,(1998)