The stratigraphy and palaeogeographic position of the Jurassic successions of the Priborzhavske-Perechin Zone in the Pieniny Klippen Belt of the Transcarpathian Ukraine



The Jurassic deposits which crop out in the quarries at Priborzhavske, Perechin and Novoselitsa in the Transcarpathian Ukraine comprise fairly similar successions, allowing their interpretation as corresponding to a single palaeogeographic zone in the Pieniny Klippen Basin. To the same zone belong also deposits from Beňatina quarry in eastern Slovakia. The following main stratigraphic units may be recognized: terrigenous and fleckenkalk–fleckenmergel deposits (Sinemurian-Pliensbachian), highly diversified and condensed deposits (uppermost Pliensbachian-Aalenian), crinoidal limestones (Bajocian, with a stratigraphical gap covering a lower part of the Lower Bajocian), nodular limestones of ammonitico-rosso type (uppermost Bajocian to Oxfordian with a possible gap covering the Callovian and Lower Oxfordian), well bedded micritic limestones (Kimmeridgian to Upper Tithonian), and bedded limestones with cherts of the maiolica type (from the uppermost Tithonian). Two rifting phases, well developed in the successions, took place: (1) Devín phase during latest Pliensbachian-Toarcian-and at least earliest Aalenian, and (2) Krasín phase during the Bajocian. The onset of pelagic deposits overlying the rift strata took place during the latest Bajocian, and corresponds well with the general subsidence and development of a more uniform facies pattern during the post-rifting time as everywhere in the Pieniny Klippen Basin. Selected ammonite taxa of the Lower and lower part of the Middle Jurassic are illustrated and discussed.


stratigraphy; Jurassic; ammonites; facies; rift phases; palaeogeography; Pieniny Klippen Belt; Transcarpathian Ukraine

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