The Sklené Teplice pre-neovolcanic horst basement is cropping out in the central part of the Neogene volcanic complexes of the ?tiavnica stratovolcano. Two tectonic units participate on the geological structure of the Sklené Teplice horst. The Veporicum tectonic unit is composed of the pre-Mesozoic crystalline basement and the Mesozoic cover sediments with stratigraphic range from the Early Triassic to Early Cretaceous. The Hronicum tectonic unit contains the Upper Palaeozoic volcanosedimentary complex and Triassic predominanly carbonate sediments. Both tectonic units were affected by the palaeo-Alpine deformation with different kinematics. The Veporicum crystalline complexes and cover sediments were displaced generally westwards, while the Hronicum sediments northeastwards. Atypical sense of the tectonic displacement of the Veporicum tectonic unit is interpreted as the counter-clockwise rotation of structures due to sinistral transpression along the Pohorelá tectonic zone.
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