Distribution of Microfossils in the Vendian Deposits of the Orsha Depression of the East European Platform, Belarus

Abstract— The complete sections of the Lower and Upper Vendian East European Platform were opened in boreholes Belarus. This allows us to consider this region as a stratotype area. In order update paleontological characteristics Vendian, organic-walled microfossils from Bogushevsk-1, Bogushevsk-2 (Liozno), Lepel-1 reference drilled north Orsha Depression studied. transitive assemblage I with Leiosphaeridia minutissima–Leiosphaeridia tenuissima was recognized Liozno Formation Volyn Series Kotlin Formation. Redkino microfossil assemblages identified at three stratigraphic levels Nizy, Selyava, Chernitsa formations: II Morania zinkovi, III zinkovi–Tynnia precambrica, IV precambrica–Striatella coriacea, respectively. V Vendotaenia antiqua–Primoflagella speciosa distinguished upper part (Bogushevsk-1 borehole). On basis taxonomic composition, are correlated first biota Starorusskaya Formation; is third Vasileostrovskaya northwestern Russia. Our data show high biostratigraphic potential microfossils, which should be used substantiate regional units updated scheme Platform.