RECENT STATUS OF STRATIGRAPHY AND CORRELATION OF JURASSIC IN FORECARPATHIAN
According to the modern view about geological building of the Carpathian foredeep, the Jurassic is represented there by sections of Lower (Liass), Middle (Dogger) and Upper (Malm) Series about 2500–3000 m thick. In the different sections have been distinguished formation (suites) called Komarno, Bortyatyn, Podiltsi and Medynychi (Liass), Kokhanivka (Dogger), Yavoriv, Rudky, Sokal', Rava-Rus'ka, Opary, Nyzhniv, Boniv, Morantsi and Karolina (Malm). Moreover, has been considered that Jurassic sequences in Forecarpathian does not complete, but contain several stratigraphic gaps, and the sediments of Mesozoic in Krukenychi zone generally are absent. Thorough analysis of the fossils finds and the geological correlation of numerous sections in boreholes, drilled in Forecarpathian (including adjacent territory of Poland), allowe to come to decided conclusion about entire absence of the Lower Jurassic strata everywhere in the region and about the Late Proterozoic – Early (Cambrian-Ordovician) Paleozoic age of the referabled to Liass strata. Has been motivated an inaccuracy of opinion of the gaps in the Jurassic sections and of the absence of Mesozoic in the Krukenychi zone. Has been proved paleontological and geological range of the Jurassic stages in the Carpathian foredeep: Bajosian – 90 m, Bathonian – 100 m, Callovian – 50 m, Oxfordian – 150 m, Kimmeridgian – 110 m, Tithonian – 100 m. Taking into consideration that range of the formations does not interpreted unequivocal, as well the absence of stratotypes and infringement of the Stratigraphic Code principles during the establishment, the formations Sokal', Rava-Rus'ka, Kokhanivka, Rudky, Boniv, Opary, Morantsi and Karolina can not be valid stratigraphic subdivisions. Nyzhniv formations may be usable in sensu stricto, as local subdivision.