Granite, weathering

These observations support the hypothesis that the similarity of the cesium elemental distribution to that of iron in natural granite weathering profiles is a result of coincidental clay mineral production rather than a direct association with oxyhydr-oxides (14).. .. 

The calculation of mineral weathering rates based on solute concentrations is complicated by the fact that individual solute species are commonly produced by more than one weathering reaction. In granite weathering, for example, aqueous silicon is produced not only from plagio-clase weathering (Equation (2)), but also by K-feldspar, biotite, hornblende and quartz dissolution. In addition, secondary minerals such as kaolinite take up aqueous silicon (Equation (2)). 

Stauffer R. E. (1990) Granite weathering and the sensitivity of Alpine Lakes to acid depositon. Limnol. Oceangr. 35, 1112-1134. 

Aubert D., StiUe P., and Probst A. (2001) REE fractionation during granite weathering and removal by waters and suspended loads Sr and Nd isotopic evidence. Geochim. Cosmochim. Acta 65, 387—406. 

Schmitt J.-M. (1999) Weathering, rainwater and atmospheric chemistry an example and modeling of granite weathering in present conditions, in a CO2 rich and in an anoxic palaeoatmosphere. In Palaeoweathering, Palaeosurfaces and Continental Deposits, Int. Assoc. Sedimentology Spec. Publ. (eds. M. Thiry and R. Simon-Coin9on). Blackwell, Oxford, vol. 27, pp. 21-41. 

Granite weathering soils Weathering soils of Rotliegende Muschelkalk weathering soils Loess... 

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