U‐PB Detrital Zircon Geochronology of the Lower Danube and Its
Geochemistry, Geophysics, Geosystems RESEARCH ARTICLE U-PB Detrital Zircon Geochronology of the Lower Danube and 10.1029/2018GC007659 Its Tributaries: Implications for the Geology of the Carpathians Key Points: Mihai N. Ducea1,2 , Liviu Giosan3, Andrew Carter4 , Constantin Balica5 , Adriana M. Stoica1,2, • A detrital zircon U-Pb study of 2 5 6 2 modern sands from the lower Relu D. Roban , Ion Balintoni , Florin Filip , and Lucian Petrescu Danube and its tributaries 1 2 documents the main magmatic University of Arizona, Tucson, AZ, USA, Faculty of Geology and Geophysics, University of Bucharest, Bucharest, Romania, 3 4 5 events that led to the continental Woods Hole Oceanographic Institution, Woods Hole, MA, USA, University of London, London, UK, Babes-Bolyai crustal formation of the nearby University, Cluj Napoca, Romania, 6Institute for Fluvial and Marine Systems, Romania Carpathians • The great majority of basement was formed in latest Abstract We performed a detrital zircon (DZ) U-Pb geochronologic survey of the lower parts of the Proterozoic-Ordovician island arcs, a finding that is consistent with Danube River approaching its Danube delta, Black Sea sink, and a few large tributaries (Tisza, Jiu, Olt, and previous studies Siret) originating in the nearby Carpathian Mountains. Samples are modern sediments. DZ age spectra reflect • An unexpected and prominent the geology and specifically the crustal age formation of the source area, which in this case is primarily the Carboniferous magmatic peak in the detrital record has no known source Romanian Carpathians and their foreland with contributions from the Balkan Mountains to the south of in the nearby Carpathians Danube and the East European Craton.
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