PRECAMBRIAN FORMATIONS IN THE SOUTHERN CARPATHIANS IN ALBA COUNTY

Rezumat

The portion of the Southern Carpathians, namely the Şurianu Mountains, located in Alba County, is of particular importance from a geological, economic, and tourist point of view. This paper presents the main geological characteristics of this mountain range. The crystalline schists, which form the main mass of the massif, were formed by the metamorphosis of sedimentary deposits in the Pre-Baikal tectonic cycles, in the Eo- and Mesoproterozoic. The degree of metamorphism varies from mesometamorphites to epimetamorphites, grouped into four petrographic complexes. The schist mass contains significant accumulations of useful mineral substances, both metallic and non-metallic (Au, Zr, Mn, Fe, Al, gypsum, graphite, etc.), some of which are exploited or exploitable.