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In 1965 near town Perechyn, Zakarpattia region, the Vulshavа suite was observed. It seems to belong to the Central Carpathians Paleogene (Middle-Upper Eocen). In 1967 this suite became larger (Middle Eocen-Lower Oligocene). The authors of this article reinterpreted the previous data based on the predecessors researches. It was established that this Paleogene belongs to Pieniny Nappe, judging by its stuctural and lithological features. This Paleogene differ from the same age Central Carpathians deposits and those of Magura Nappe by the participation into the overthrust, deposition on the Pieniny Upper Cretaceous deposits and psephites particles composition that prevail mezozoic carbonates. By analogy with other Pieniny areas of the Ukrainian Carpathians and taking into account a part of the Upper Eocene deposits, they must be defined as Eocene Vulkhovchyk suite (with globigerin marls in the top). The Oligocene deposits does not have analogy in Ukrainian Carpathians. It is suggested to name them as Perechyn suite.
Shlapinskiy et al. (Thu,) studied this question.