Contenu du sommaire

Abstract. — On the middle range altitude mountains, it can be observed an altitudinal zonation of inherited landforms from glacial times involved by snow and icing processes. Specific arrangement of landforms identifies four different levels. Their limits are modified from a region to the other : the southward elevation is more accused when crossing a line from Galicia to the northern Alps, separating two provinces.

Abstract. — Main interests : General panorama of alpine mountains near Grenoble. Alpine valleys, localisation and development of the Grenoble agglomeration; Karstic morphology and water circulation in a large calcareous middle mountain (1000-2000 m high) with a relief about in conformity with the folds in sedimentary rocks and of recent elevation (latter part of Miocène). Glacio-karstic features in the high mountain and correlations between quaternary glaciations and karstic phenomena. Old rural landscape altered by transformation of rural activities, growth of touristic implantations and phenomena of peri-urbanisation in relation with Grenoble (rurbamsa- tion).