Abstract

Three sections from the upper Miocene (Pannonian) of the Guşteriţa quarry – Sibiu (the southern border of the Transylvanian Basin) were investigated in detail. The main part of the research was based on calcareous nannofossil analysis to which some aspects on molluscs and ostracods fauna, together with sedimentological remarks were added. The calcareous nannofossil assemblages from Guşteriţa quarry were compared with seven other previously analyzed sections from the western border of the Transylvanian Basin: Aiud area (Geoagiu, Gârbova, Gârboviţa, Lopadea exposures and Decea quarry) and Sibiu area (Vurpăr and Apoldu exposures). The Pannonian calcareous nannofossil assemblages are abundant at some levels and contain mostly species of the genera Isolithus and Noelaerhabdus.

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