WEATHERING OF GRANITIC-ROCKS IN THE ALPS - PRELIMINARY-RESULTS FROM ORTHOGNEISS ASSOCIATED WITH THE RANDA ROCKFALL (MATTER VALLEY, VALAIS, SWITZERLAND)
F. Girod et P. Thelin, WEATHERING OF GRANITIC-ROCKS IN THE ALPS - PRELIMINARY-RESULTS FROM ORTHOGNEISS ASSOCIATED WITH THE RANDA ROCKFALL (MATTER VALLEY, VALAIS, SWITZERLAND), Schweizerische Mineralogische und Petrographische Mitteilungen, 78(1), 1998, pp. 179-184
Preliminary data about mineralogical aspects of the alteration-weather
ing effects affecting the Randa orthogneiss are presented. Despite the
cold-temperate climate of the Alps, phenomena as dissolution, transfo
rmation and neoformation might be documented in the matrix of the rock
as well as along discontinuities.