The chemical and mineralogical variation caused by the weathering on granitic profile in the Serre area of Calabria (Southern Italy) was studied. The results obtained show that the biotite transform to vermiculite (unstable) and kaolinite. In the clay fraction of the saprolite kaolinite is by far the most abundant phyllitic phase. The biotite-kaolinite transformation and the marked impoverishment of many geochemical species, almost total in the case of CaO and Na2O, are typical phenomena of a more aggressive climate than the present one
Biotite-kaolinite transformation in a granitic saprolite of the Serre (Calabria, southern Italy)
MONGELLI G.
;
1990-01-01
Abstract
The chemical and mineralogical variation caused by the weathering on granitic profile in the Serre area of Calabria (Southern Italy) was studied. The results obtained show that the biotite transform to vermiculite (unstable) and kaolinite. In the clay fraction of the saprolite kaolinite is by far the most abundant phyllitic phase. The biotite-kaolinite transformation and the marked impoverishment of many geochemical species, almost total in the case of CaO and Na2O, are typical phenomena of a more aggressive climate than the present oneFile in questo prodotto:
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