caa a22 4500 606149139 CHVBK 20210128100532.0 cr unu---uuuuu 210128e20150101xx s 000 0 eng 10.1007/s00531-014-1077-7 doi (NATIONALLICENCE)springer-10.1007/s00531-014-1077-7 Geochronological study of zircons from continental crust rocks in the Frido Unit (southern Apennines) [Elektronische Daten] [Salvatore Laurita, Giacomo Prosser, Giovanna Rizzo, Antonio Langone, Massimo Tiepolo, Alessandro Laurita] Zircon crystals have been separated from gneisses and metagranitoids of the Pollino area (southern Apennines) in order to unravel the origin of these crustal slices within the ophiolite-bearing Frido Unit. The morphology of the zircon has been investigated by SEM, and the internal structure was revealed by cathodoluminescence. Data obtained by U/Pb dating have been used to deduce the age and significance of the different crystallization stages of zircon, connected to the evolutionary stages of the continental crust (Late Paleozoic-Early Mesozoic). Zircons in gneisses are characterized by inherited cores of magmatic origin, bordered by metamorphic rims. Inherited zircons generally show Paleoproterozoic to Ordovician ages, indicating the provenance of the sedimentary protolith from different sources. The exclusive presence of Late Neoproterozoic zircon cores in leucocratic gneisses may suggest a different magmatic source possibly connected to Pan-African events. Late Carboniferous-Early Permian ages are found mainly in zircon rims of metamorphic origin. These are similar to the emplacement ages of protolith of the metagranites in the middle crust portion. Late Carboniferous-Early Permian metamorphism and magmatism testify the extensional collapse of the Hercynian belt, recorded in European, particularly, in the Corsica-Sardinia block and in Calabria. Late Permian-Triassic ages have been detected in zircon rims from gneisses and metagranitoids. These younger ages appear related to deformation and emplacement of albite-quartz veins in both lithologies, and are related to an extensional episode predating the Middle Triassic to Middle Jurassic rifting in the Tethyan domain, followed by Middle to Late Jurassic spreading. Springer-Verlag Berlin Heidelberg, 2014 Continental crust rocks nationallicence Zircon U-Pb LA-ICP-MS analyses nationallicence Frido Unit nationallicence Southern Apennines nationallicence Laurita Salvatore Department of Sciences, University of Basilicata, Viale dell'Ateneo Lucano 10, 85100, Potenza, Italy aut Prosser Giacomo Department of Sciences, University of Basilicata, Viale dell'Ateneo Lucano 10, 85100, Potenza, Italy aut Rizzo Giovanna Department of Sciences, University of Basilicata, Viale dell'Ateneo Lucano 10, 85100, Potenza, Italy aut Langone Antonio CNR-IGG, UOS di Pavia, Pavia, Italy aut Tiepolo Massimo CNR-IGG, UOS di Pavia, Pavia, Italy aut Laurita Alessandro Department of Sciences, University of Basilicata, Viale dell'Ateneo Lucano 10, 85100, Potenza, Italy aut International Journal of Earth Sciences Springer Berlin Heidelberg 104/1(2015-01-01), 179-203 1437-3254 104:1<179 2015 104 531 https://doi.org/10.1007/s00531-014-1077-7 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/s00531-014-1077-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Laurita Salvatore Department of Sciences, University of Basilicata, Viale dell'Ateneo Lucano 10, 85100, Potenza, Italy aut NATIONALLICENCE 700 1- Prosser Giacomo Department of Sciences, University of Basilicata, Viale dell'Ateneo Lucano 10, 85100, Potenza, Italy aut NATIONALLICENCE 700 1- Rizzo Giovanna Department of Sciences, University of Basilicata, Viale dell'Ateneo Lucano 10, 85100, Potenza, Italy aut NATIONALLICENCE 700 1- Langone Antonio CNR-IGG, UOS di Pavia, Pavia, Italy aut NATIONALLICENCE 700 1- Tiepolo Massimo CNR-IGG, UOS di Pavia, Pavia, Italy aut NATIONALLICENCE 700 1- Laurita Alessandro Department of Sciences, University of Basilicata, Viale dell'Ateneo Lucano 10, 85100, Potenza, Italy aut NATIONALLICENCE 773 0- International Journal of Earth Sciences Springer Berlin Heidelberg 104/1(2015-01-01), 179-203 1437-3254 104:1<179 2015 104 531