caa a22 4500 469111356 CHVBK 20180323133112.0 cr unu---uuuuu 170328e19920401xx s 000 0 eng 10.1007/BF02047111 doi (NATIONALLICENCE)springer-10.1007/BF02047111 Variation of U-microdistribution in fossil Hipparion teeth as a complicating factor in dating studies [Elektronische Daten] [Y. Bassiakos, A. Athanassiou, S. Roussiakis, G. Theodorou] Five Upper Miocene fossil Hipparion molars were studied for U-distribution by Fission Track. U uptake has reached the whole mass of the teeth and no saturation fronts seem to occur in the interior layers. Mean U-concentration in dentine, cement and enamel was 157, 139 and 78 ppm, respectively. Uenamel/Udentine ≈ 0.5 is considerably higher than 0.1 reported in the past for Upper-Quaternary mammoth teeth. These features are disadvantageous for ESR-dating in Hipparion enamel, although a long-lived signal (g=2.0018) is apparent. Leaching phenomena occur in the outer regions of these teeth. Inner enamel folding seems to have hindered a more uniform U-distribution in the teeth. Akadémiai Kiadó, 1992 Bassiakos Y. Laboratory of Archaeometry, N.R.C.S. "Demokritos”, 153 10, Aghia Paraskevi Attikis, (Greece) aut Athanassiou A. Subfaculty of Earth Sciences, Department of Historical Geology and Paleontology, University of Athens, Panepistimiopolis, 157 84, Zografou, (Greece) aut Roussiakis S. Subfaculty of Earth Sciences, Department of Historical Geology and Paleontology, University of Athens, Panepistimiopolis, 157 84, Zografou, (Greece) aut Theodorou G. Subfaculty of Earth Sciences, Department of Historical Geology and Paleontology, University of Athens, Panepistimiopolis, 157 84, Zografou, (Greece) aut Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 158/2(1992-04-01), 239-250 0236-5731 158:2<239 1992 158 10967 https://doi.org/10.1007/BF02047111 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/BF02047111 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Bassiakos Y. Laboratory of Archaeometry, N.R.C.S. "Demokritos”, 153 10, Aghia Paraskevi Attikis, (Greece) aut NATIONALLICENCE 700 1- Athanassiou A. Subfaculty of Earth Sciences, Department of Historical Geology and Paleontology, University of Athens, Panepistimiopolis, 157 84, Zografou, (Greece) aut NATIONALLICENCE 700 1- Roussiakis S. Subfaculty of Earth Sciences, Department of Historical Geology and Paleontology, University of Athens, Panepistimiopolis, 157 84, Zografou, (Greece) aut NATIONALLICENCE 700 1- Theodorou G. Subfaculty of Earth Sciences, Department of Historical Geology and Paleontology, University of Athens, Panepistimiopolis, 157 84, Zografou, (Greece) aut NATIONALLICENCE 773 0- Journal of Radioanalytical and Nuclear Chemistry Kluwer Academic Publishers 158/2(1992-04-01), 239-250 0236-5731 158:2<239 1992 158 10967 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer