Fossil bones and sediments from different horizons of the Upper Miocene paleontological site of Platania, Drama-Greece were studied using U, U, Th series and K measurements obtained by γ-spectroscopy. Additionally, SEM and XRF analysis was applied to bone and sediment samples while a lithological analysis of the sediments was also carried out. The Ra/U ratios in the fossilization layers are attributed to the U depletion from the sediment and its incorporation into the fossils.
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