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• W2017049943 abstract "The effect of organic matter during soil/water interaction is still a debated issue on the controls of chemical weathering in a tropical environment. In order to study this effect in detail, we focused on the weathering processes occurring in a small tropical watershed (Nsimi-Zoetélé, South Cameroon). This site offers an unique opportunity to study weathering mechanisms in a lateritic system within a small basin by coupling soil and water chemistry. The lateritic cover in this site can reach up to 40 m in depth and show two pedological distinct zones: unsaturated slope soils on the hills and/or elevated areas; and water-saturated soils in the swamp zone which represent 20% of the basin surface. The study present chemical analysis performed on water samples collected monthly from different localities between 1994–1997 and on soil samples taken during a well drilling in December 1997. The results suggest the existence of chemical and spatial heterogeneities of waters in the basin: colored waters flooding the swamp zone have much higher concentrations of both organic matter (i.e., DOC) and inorganic ions (e.g., Ca, Mg, Al, Fe, Th, Zr) than those from springs and groundwater from the hills. Nevertheless, these organic-rich waters present cation concentrations (Na, Ca, Mg, K) which are among the lowest compared to that of most world rivers. The main minerals in the soils are secondary kaolinite, iron oxi-hydroxides, quartz, and accessory minerals (e.g., zircon, rutile). We mainly focused on the mineralogical and geochemical study of the swamp zone soils and showed through SEM observations the textural characterization of weathered minerals such as kaolinite, zircon, rutile, and the secondary recrystallization of kaolinite microcrystals within the soil profile. Water chemistry and mineralogical observations suggest that hydromorphic soils of the swamp zone are responsible for almost all chemical weathering in the basin. Thus, in order to explain the increase of element concentration in the organic-rich waters, we suggest that organic acids enhance dissolution of minerals such as kaolinite, goethite, and zircon and also favors the transport of insoluble elements such as Al, Fe, Ti, Zr, and REE by chemical complexation. SiO2(aq) concentrations in these waters are above saturation with respect to quartz. Dissolution of phytholithes (amorphous silica) may be responsible for this relatively high SiO2(aq.) concentration. Al/Mg ratios obtained for the soil and the Mengong river waters show that a significant amount of Al does not leave the system due to kaolinite recrystallisation in the swamp zone soils. Geochemical data obtained for this watershed show the important contribution of vegetation and organic matter on chemical weathering in the swamp zone. Quantitatively we propose that the increasing amount in total dissolved solid (TDS) due to organic matter and vegetation effect is about 35%. In summary, this interaction between soils and waters occurs mostly in soils that are very depleted in soluble elements. Thus, the low concentration of major elements in these water is a direct consequence of the depleted nature of the soils." @default.
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• W2017049943 date "1999-12-01" @default.
• W2017049943 modified "2023-09-30" @default.
• W2017049943 title "The effect of organic matter on chemical weathering: study of a small tropical watershed: nsimi-zoétélé site, cameroon" @default.
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• W2017049943 cites W1969899469 @default.
• W2017049943 cites W1971678316 @default.
• W2017049943 cites W1974944396 @default.
• W2017049943 cites W1990979019 @default.
• W2017049943 cites W1992774240 @default.
• W2017049943 cites W1995453445 @default.
• W2017049943 cites W1995651460 @default.
• W2017049943 cites W1998096686 @default.
• W2017049943 cites W1998682445 @default.
• W2017049943 cites W1999058698 @default.
• W2017049943 cites W2000179986 @default.
• W2017049943 cites W2004066065 @default.
• W2017049943 cites W2005622443 @default.
• W2017049943 cites W2006456876 @default.
• W2017049943 cites W2008587428 @default.
• W2017049943 cites W2011567504 @default.
• W2017049943 cites W2021498615 @default.
• W2017049943 cites W2025213474 @default.
• W2017049943 cites W2031921155 @default.
• W2017049943 cites W2031925471 @default.
• W2017049943 cites W2035978091 @default.
• W2017049943 cites W2036685771 @default.
• W2017049943 cites W2041321476 @default.
• W2017049943 cites W2042448116 @default.
• W2017049943 cites W2045940965 @default.
• W2017049943 cites W2046048171 @default.
• W2017049943 cites W2050126402 @default.
• W2017049943 cites W2061895284 @default.
• W2017049943 cites W2062894349 @default.
• W2017049943 cites W2070986236 @default.
• W2017049943 cites W2080592662 @default.
• W2017049943 cites W2080835316 @default.
• W2017049943 cites W2084283421 @default.
• W2017049943 cites W2084849445 @default.
• W2017049943 cites W2086897265 @default.
• W2017049943 cites W2089154321 @default.
• W2017049943 cites W2093304541 @default.
• W2017049943 cites W2094732368 @default.
• W2017049943 cites W2095352076 @default.
• W2017049943 cites W2100815835 @default.
• W2017049943 cites W2111455782 @default.
• W2017049943 cites W2119509015 @default.
• W2017049943 cites W2120601523 @default.
• W2017049943 cites W2123204084 @default.
• W2017049943 cites W2133580579 @default.
• W2017049943 cites W2144017669 @default.
• W2017049943 cites W2154440539 @default.
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• W2017049943 doi "https://doi.org/10.1016/s0016-7037(99)00306-3" @default.
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