A tectonic unit of uncertain position is the Zemplinic in the horst of the Zemplín Mts., emerging from the Cenozoic sedimentary fill of the Eastern Slovakia Basin. The Zemplinic is according to some authors either assigned to the separate belts (Zemplín Belt or Sub-Vihorlat Belt) or considered as a part of the separate terrane Tisia-Dacia. Some geologists assign it to the Southern Veporic, the Gemeric unit, or even to the Eastern Carpathians. The Zemplinic is the only place of occurrence of the Precambrian rock in the Western Carpathians. They are composed of the paragneisses, amphibolites, and migmatites, together with Post-Hercynian Carboniferous and Permian conglomerates and thin beds of black coal.