La corrélation des glissements de terrain avec les types de domes périphérique dans le Bassin de Transylvanie (Roumanie)

The correlation of landslides with the different types of peripherical domes in the Transylvanian Basin (Rumania)

Abstract

The dome structures are morphometrically defined by a weak relief energy (0.1-80 m), an average steepness of flanks (1°-10°) and by very different evolution stagies. These structures are shaped like spherical or bra-chianticlinals and are located mainly in the areas with a very thick sedimentary cover. According to their geographical position in the Transylvanian Basin, a distinction can be made between the central, flattened domes and the peripherical ones characterized by quite great altitudes. The landslides associated to the latter can be distinguished for their deepness, their wide-ness, the altitude of their 4-5 sliding levels, a geomorphological landscape with a variable energy. A particular model of peripherical dome is the Corunca Dome. This, from the morphological point of view, represents a model of evolution through deep landslides, of the kind of «glimee», which can be connected to the action of tectonics and neotectonics in the matrix of mio-pliocenic deposits.