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Unraveling complex <2 m clay mineralogy from soils using X-ray diffraction profile modeling on particle-size sub-fractions: Implications for soil pedogenesis and reactivity by F. Hubert; L. Caner; A. Meunier; E. Ferrage is a Earth and Planetary Sciences article available to read on EtoBox.
What is Unraveling complex <2 m clay mineralogy from soils using X-ray diffraction profile modeling on particle-size sub-fractions: Implications for soil pedogenesis and reactivity about?
A specific methodology was developed to refine the complex clay mineralogy commonly encountered in soil environments. The soil examined was a Cambisol developed into a ferralitic paleosol. The sample was split into four sub-fractions of different particle sizes (<0.05, 0.05-0.1, 0.1-0.2, and 0.2-2 μm), and their respective mass contributions to the overall <2 μm clay fraction were determined. For each sub-fraction, X-ray diffraction (XRD) patterns were modeled using a trial-and-error approach based on the direct comparison of experimental and calculated profiles. Quantitative information derived from the fitting procedure for the different sub-fractions allowed for the determination of the complex mineralogy of the <2 μm clay fraction through the identification and quantification of eight clay phases. The results show that the finest and most reactive clay fraction (<0.05 μm) was totally hidden in the XRD pattern of the <2 μm fraction, the fraction commonly considered in soil mineralogical analyses. Similarly, this procedure revealed the presence of illite-smectite-chlorite and kaolinite-illite mixed-layer minerals seldom described in soil literature using classical methods. The us
Who reads Unraveling complex <2 m clay mineralogy from soils using X-ray diffraction profile modeling on particle-size sub-fractions: Implications for soil pedogenesis and reactivity?
It is typically read by researchers, students, and practitioners in Earth and Planetary Sciences.
- Author
- F. Hubert; L. Caner; A. Meunier; E. Ferrage
- Publisher
- Mineralogical Society of America
- Published
- 2012
- Language
- EN
- Field
- Earth and Planetary Sciences (Physical Sciences)