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Articles | Volume 17, issue 6
Articles | Volume 17, issue 6
https://doi.org/10.5194/se-17-867-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/se-17-867-2026
© Author(s) 2026. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17, issue 6
Research article
 | 
25 Jun 2026
Research article |  | 25 Jun 2026

A vast Caledonian fan and an Ediacaran arc: the contrasting provenance of Devonian clastics of Brunia (Bohemian Massif)

Stephen Collett, Igor Soejono, Tomáš Kumpan, Pavel Hanžl, Jitka Míková, Nikol Novotná, and Jiří Sláma

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Short summary
Brunia is a Neoproterozoic crustal block whose pre-Variscan history is unclear. New U–Pb and Lu–Hf detrital zircon data from Devonian strata reveal two provenance types. Type-1 spectra reflect recycling of local Brunia arc sources and show isotopic similarity to West Avalonia, indicating a shared Neoproterozoic history. Type-2 spectra match Fennoscandian datasets, implying sediment input from the Caledonides and an Early Devonian connection between Brunia and Baltica.
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