Sažetak | The Triassic succession of the Rupice deposit comprises deep-sea siliciclastic-carbonate, volcanoclastic, and chert units. Five cores were selected for petrographic and geochemical analysis to determine the characteristics and deposition conditions of lithotypes, as well as the genesis of the deposit. Five facies and eleven lithotypes were differentiated: 1. Siliciclastic-carbonate facies (lithotypes dolomitic marl, silicified marl, dolomitic silt-stone, silicified siltstone, dolomicrite, LD dolomite, and dolomite breccia), 2. Spilite facies (lithotypes tuff, amygdaloidal basalt, spilite breccia), 3. Chert facies (lithotype radiolarite), 4. Ore-bearing facies (sulphide mineralization and mineralized dolomitic breccia), and 5. Limestone facies (lithotype mudstone). The deep-sea siliciclastic-carbonate facies were deposited in the Anisian during the opening of the Dinaric Tethys, fol-lowed by advanced rifting in the Anisian-Ladinian, which was accompanied by the deposition of radiolarite and followed by a magmatic-hydrothermal phase. In the Eocene-Oligocene, the basin closure occurred through reverse faulting, resulting in overthrusts and a duplex structure of the deposit. |