Provenance of Neoproterozoic and early Paleozoic siliciclastic rocks of the Teplá-Barrandian unit (Bohemian Massif): Evidence from U–Pb detrital zircon ages

Pre-Cadomian to late-Variscan odyssey of the eastern Massif Central, France: Formation of the West European crust in a nutshell

“…These data sit along an average crustal evolution trend together with those from the 550 Ma-old zircons, corresponding to Hf model ages comprised between 1.0 and 1.5 Ga, in agreement with Hf and Nd isotope data from the FMC granitoids Pin and Duthou, 1990;Turpin et al, 1990). Such model ages clearly have no geological significance as zircon in all Gondwana derived sediments throughout Europe provide no evidence for magmatism during this period (Balintoni et al, 2014;Díez Fernández et al, 2012;Drost et al, 2011;Gebauer et al, 1989;Gerdes and Zeh, 2006;Linnemann et al, 2014;Morag et al, 2011a;Pastor-Galán et al, 2013;Pereira et al, 2012a;2012b;Shaw et al, 2014;Sirevaag et al, 2016;Villaseca et al, 2016;Williams et al, 2012;Zeh and Gerdes, 2010). Instead, this Hf isotope signature would correspond again to a mixed source consisting of Neoproterozoic (0.6-0.8 Ga), juvenile crust and Archean/Paleoproterozoic crust (2.0-3.3 Ga).…”

“…This interpretation is supported (1) by sedimentologic, paleontogical and paleomagnetic data indicating a common south polar position of all these terranes (Cocks and Torsvik, 2002;Fortey and Cocks, 2003;Paris and Robardet, 1990;Robardet et al, 1990;Tait et al, 2000;, and (2) by detrital zircons from late Proterozoic to early Paleozoic metasediments sampled throughout the European Variscides characterized by a predominance of ages related to the Pan-African orogenies (that resulted in the amalgamation of Gondawana; 0.55-0.70 Ga) and the African cratons (1.9-2.1 Ga and 2.7-3.3 Ga) with a characteristic gap between ca. 1.2 and 1.7 Ga (e.g., Drost et al, 2011;Fernández-Suárez and Gutiérrez-Alonso, 2000;Gebauer et al, 1989;Gerdes and Zeh, 2006;Keay and Lister, 2002;Linnemann et al, 2014;Melleton et al, 2010;Shaw et al, 2014;Sirevaag et al, 2016;Zeh and Gerdes, 2010).…”

Potential sources of Ediacaran strata of Iberia: a review

“…Palaeoproterozoic ages of detrital zircons found in Ediacaran strata of Iberia may come from various sources in North Gondwana (Drost, Gerdes, Jeffries, Linnemann, & Storey, 2011) and are distributed across: the Trans-Saharan belt (c. 2.5-1.6 Ga), the Saharan Metacraton, with the exception of the Statherian (c. 2.4-1.8 Ga), the Arabian-Nubian shield and the Anti-Atlas lacking Siderian (c. 2.3-1.7 Ga) and the West African craton mainly with Siderian and Orosirian ages (c. 2.4-2 Ga), where the Eburnean zircon-forming event was defined (c. 2-1.8 Ga; Liegeois et al, 1991;Hirdes & Davis, 2002;Thieblemont et al, 2004).…”

“…In turn, the older detrital zircons come from Archeanknown sources in North Gondwana (Drost et al, 2011) located in the West African craton (c. 3.6-2.6 Ga) and the Trans-Saharan belt (c. 3.5-2.5 Ga). The Archean ages found in the Ediacaran strata of Iberia fall in the range of two main zircon-forming events in the West African craton: (1) Leonian (c. 3.5-3 Ga; Palaeoarchean -Thieblemont et al, 2004) and (2) Liberian (c. 2.9-2.7 Ga; Meso-Neoarchean - Key et al, 2008;Koulamelan, Delor, & Peucat, 1997;Potrel et al, 1996).…”

“…Schematic palaeographical map of the Gondwana supercontinente at c. 570-560 Ma with probable location of Iberia in the Cadomian belt (modified from Drost et al, 2011;Linnemann et al, 2008). evolution and palaeogeography of North Gondwana. With the aim of providing a further contribution and filling some gaps in our knowledge in stratigraphy which is neither preserved nor exposed in Portugal, data for existing correlative sequences in Spain is also presented.…”