Abstract
Abstract Some problems concerning the relationship between the kinetometamorphism and metasomatic transformation during granitization and formation of veined gneisses are discussed. The discussion is based mainly on certain field examples in the Stockholm and Vastervik areas of Central and Southern Sweden to be visited during excursions connected with the 21st International Geological Congress. The mechanical behaviour of various rock types are considered in the light of their structural patterns, the purpose being to establish the relative plasticity/rigidity of the rocks during deformation. Reaction zones surrounding inclusions of metabasite or metaarenite in pegmatitic veined gneisses indicate a mineral formation which involves an exchange of chemical elements between the gneiss mass and the inclusions. The reactions took place in the presence of a mobile phase which supplied some water and potassium to parts of the rock sequence. Whereas the mineral compositions of the inclusions indicate their minera...
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