Titlebook: Geology of Clays; Weathering · Sedimen Georges Millot Book 1970 Springer-Verlag Wien 1970 Geology.geochemistry.geology.Sediment.sedimentolo

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Alberto Tagliafico MD,Giulio Tagliafico PhDBy a slow process clays have been described in their deposits and then in the mechanisms of their formation. It is instructive at the end of this process to consider the whole problem in geochemical terms. We shall do it in the four following sections:

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Geochemistry of Ions in the Hydrosphere,Clays belong to the surface of Earth’s crust because metamorphism at depth transforms them very quickly into silicates of entirely different sizes and behavior. The geochemistry of clays thus is part of the geochemistry of surface where water plays a leading role. Three aspects of the geochemistry of hydrosphere will be presented in this chapter.

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Weathering and Soil Clays,Continental areas are subject to weathering and pedogenesis. Three distinct phenomena are to be considered (D., 1960):

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Genesis of Clay Minerals: Inheritance and Transformation,Throughout the exposé of facts three principal processes have been invoked to account for the genesis of clay minerals:

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Genesis of Clays: Neoformations and Syntheses,This chapter will bring together and compare our knowledge on:

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