Marchev, Peter, Raicheva, Raya, Ivanova, Rositsa, Jicha, Brian, Peytcheva, Irena (2025) Age and genesis of the largest Phanerozoic Mn deposits in the Paratethys: Inferences from 40Ar/39Ar and U/Pb ages in NE Bulgaria and NW Turkey. Journal of Geochemical Exploration, 274. doi:10.1016/j.gexplo.2025.107764

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