%0 Journal Article %T The origin of black shale-hosted Mn deposits in Paratethyan basins: Constraints from geological events at the Eocene/Oligocene boundary %A , .. %A , .. %A , .. %A , .. %K Paratethyan basins, Mn deposits, Eocene/Oligocene boundary, geological events. %J Russian Journal of Earth Sciences %D 2003 %N 5 %P 17 %I Геофизический центр Российской Академии Наук