Abstract：
:Fossil bones and sediments from different horizons of the Upper Miocene paleontological site of Platania, Drama-Greece were studied using 238U, 235U, 232Th series and 40K 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 226Ra/238U ratios in the fossilization layers are attributed to the 238U depletion from the sediment and its incorporation into the fossils. The 226Ra/231Pa ratio indicates that the absorption of the isotopes started long before 4.2 Ma ago. The 232Th/40K profile demonstrate two distinct geological substrates, the lower corresponding to the Upper Miocene whereas the upper to the Upper Pleistocene-Holocene. Among them mediates a Mn-rich layer associated with the "Zanclean flood" during Pliocene. One layer above the "Glacial maximum event" during the Early Pleistocene was recorded. The natural radioactive sedimentary profile obtained reproduces the paleo-climatic conditions in Southeast Europe, which could be useful for the future.
journal_name
J Environ Radioactjournal_title
Journal of environmental radioactivityauthors
Zougrou ΙM,Stoulos S,Kantiranis N,Papadopoulou L,Ioakeimidis I,Katsikini M,Paloura E,Tsoukala Edoi
10.1016/j.jenvrad.2018.08.012subject
Has Abstractpub_date
2018-10-01 00:00:00pages
1-14eissn
0265-931Xissn
1879-1700pii
S0265-931X(18)30209-1journal_volume
193-194pub_type
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