Journal articles
Genesis of a mottled horizon by Fe-depletion within a laterite cover in the Amazon Basin.
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 in clayey plasma. Dark red spots consisted of concentrations of Fe-rich particles. These patterns are inherited. On the border of structural or biological voids, where Fe-depletion features are systematic, gray or yellow spots result from dissolution of the Fe-rich particles and impregnation of the plasma by iron, respectively. The present Fe-depletion is the dominant process that explains the mottled differentiation and the absence of lateritic duricrust.
Cited literature [8 references]
https://hal-insu.archives-ouvertes.fr/hal-00077598
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Submitted on : Wednesday, June 6, 2012 - 3:23:58 PM
Last modification on : Monday, March 28, 2022 - 9:38:09 AM
Long-term archiving on: : Friday, September 7, 2012 - 2:20:32 AM
Contributor : Nathalie POTHIER Connect in order to contact the contributor
Submitted on : Wednesday, June 6, 2012 - 3:23:58 PM
Last modification on : Monday, March 28, 2022 - 9:38:09 AM
Long-term archiving on: : Friday, September 7, 2012 - 2:20:32 AM
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Rosolen-CRGeoscience-2002.pdf
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