caa a22 4500 606149074 CHVBK 20210128100532.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s00531-014-1058-x doi (NATIONALLICENCE)springer-10.1007/s00531-014-1058-x Depositional ages of clastic metasediments from Samos and Syros, Greece: results of a detrital zircon study [Elektronische Daten] [Kersten Löwen, Michael Bröcker, Jasper Berndt] Siliciclastic metasediments from the islands of Samos and Syros, Cycladic blueschist unit, Greece, were studied to determine maximum sedimentation ages. Four samples from the Ampelos unit on Samos yielded age distribution spectra that range from ~320Ma to ~3.2Ga with a dominance of Cambrian-Neoproterozoic zircons (500-1,100Ma). The youngest well-constrained age groups cluster at 500-550Ma. Our results allow to link the Samos metasediments with occurrences showing similar age distribution patterns elsewhere in the eastern Mediterranean region (Greece, Turkey, Libya, Israel and Jordan) that record the influx of ‘Pan-African' detritus. The lack of post-500-Ma zircons in the Samos samples is in marked contrast to the data from Syros that indicates Triassic to Cretaceous depositional ages. The samples from Syros were collected from the matrix of a meta-ophiolitic mélange that is exposed near the top of the metamorphic succession as well as from outcrops representing the basal part of the underlying marble-schist sequence. The zircon populations from Syros were mainly supplied by Mesozoic sources dominated by Triassic protolith ages. Subordinate is the importance of pre-Triassic zircons, but this may reflect bias induced by the research strategy. Sediment accumulation continued until Late Cretaceous time, but the overall contribution of Jurassic to Cretaceous detritus is more limited. Zircon populations are dominated by grains with small degree of rounding suggesting relatively short sediment transportation. Available observations are in accordance with a model suggesting deposition close to the magmatic source rocks. Springer-Verlag Berlin Heidelberg, 2014 U-Pb dating nationallicence Detrital zircon geochronology nationallicence Depositional age nationallicence Samos nationallicence Syros nationallicence Greece nationallicence Löwen Kersten Institut für Mineralogie, Westfälische Wilhelms-Universität Münster, Münster, Germany aut Bröcker Michael Institut für Mineralogie, Westfälische Wilhelms-Universität Münster, Münster, Germany aut Berndt Jasper Institut für Mineralogie, Westfälische Wilhelms-Universität Münster, Münster, Germany aut International Journal of Earth Sciences Springer Berlin Heidelberg 104/1(2015-01-01), 205-220 1437-3254 104:1<205 2015 104 531 https://doi.org/10.1007/s00531-014-1058-x text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00531-014-1058-x text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Löwen Kersten Institut für Mineralogie, Westfälische Wilhelms-Universität Münster, Münster, Germany aut NATIONALLICENCE 700 1- Bröcker Michael Institut für Mineralogie, Westfälische Wilhelms-Universität Münster, Münster, Germany aut NATIONALLICENCE 700 1- Berndt Jasper Institut für Mineralogie, Westfälische Wilhelms-Universität Münster, Münster, Germany aut NATIONALLICENCE 773 0- International Journal of Earth Sciences Springer Berlin Heidelberg 104/1(2015-01-01), 205-220 1437-3254 104:1<205 2015 104 531