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Title: Baltic provenance of top-Famennian siliciclastic material of the northern Rhenish Massif, Rhenohercynian zone of the Variscan orogen
Authors: Kołtonik, Katarzyna
Pisarzowska, Agnieszka
Paszkowski, Mariusz
Sláma, Jiri
Becker, Ralph Thomas
Szczerba, Marek
Krawczyński, Wojciech
Marynowski, Leszek
Hartenfels, Sven
Keywords: Baltica; Detrital zircon; Famennian sandstones; Hangenberg event
Issue Date: 2018
Citation: International Journal of Earth Sciences, Vol. 107, iss. 8 (2018), s. 2645-2669
Abstract: The provenance of top-Famennian sedimentary rocks linked to the Hangenberg Crisis from the northern Rhenish Massif (Germany) was investigated by the means of detrital zircon U-Pb geochronology. Based on the obtained age spectra, three main tectonothermal domains are recognized as possible sources: Paleo- and Mesoproterozoic (~ 2000–1000 Ma) units of Baltica and Early Paleozoic Caledonian orogen (~ 500–400 Ma). Our interpretation of the detritus having been derived from northern source areas, i.e., Baltica and the Scandinavian Caledonides, with a minor input of German-Polish (Rügen-Pomeranian) Caledonides, contradicts the traditional view that, during the Upper Devonian, the northern Rhenish Massif was supplied by detritus from the south. Complementary mineralogical, textural and geochemical analyses point to a derivation of the detritus of Drewer and Hangenberg Sandstones mainly from felsic, recycled continental crust. The elevated concentrations of Pb and Zn in the studied sections are a feature attributed to hydrothermal alteration related to the terminal Devonian synsedimentary volcanism or post-depositional Variscan deformation.
ISSN: 1437-3254
Appears in Collections:Artykuły (WNP)

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