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dc.contributor.authorSoejono, Igor
dc.contributor.authorJanoušek, Vojtěch
dc.contributor.authorŽáčková, Eliška
dc.contributor.authorSlama, Jiri
dc.contributor.authorKonopasek, Jiri
dc.contributor.authorMachek, Matěj
dc.contributor.authorHanžl, Pavel
dc.date.accessioned2017-03-14T09:31:17Z
dc.date.available2017-03-14T09:31:17Z
dc.date.issued2016-11-03
dc.description.abstractCadomian magmatic complexes of the Brunovistulian Domain crop out at the eastern termination of the Bohemian Massif. However, the age, nature and geotectonic affinity of some of pre-Variscan (meta-)igneous rock complexes from this domain are still unknown. Geochronological and geochemical study of the granitic rocks across the Brunovistulian Domain reveals new information about the timing and nature of this magmatic activity originally situated along the northern margin of Gondwana. Zircon U–Pb data (601 ± 3 Ma, Brno Massif; 634 ± 6 Ma, paraautochtonous core of the Svratka Dome; 568 ± 3 Ma, Bíteš orthogneiss) from the allochtonous Moravicum indicate the prolonged magmatic activity within the Brunovistulian Domain during the Ediacaran. The major- and trace-element and Sr–Nd isotopic signatures show heterogeneous geochemical characteristics of the granitic rocks and suggest a magmatic-arc geotectonic setting. The two-stage Depleted Mantle Nd model ages (c. 1.3–2.0 Ga) indicate derivation of the granitic rocks from a relatively primitive crustal source, as well as from an ancient and evolved continental crust of the Brunovistulian Domain. These results constrain the magmatic-arc activity to c. 635–570 Ma and provide a further evidence for a long-lived (at least c. 65 Myr) and likely episodic subduction-related magmatism at the northern margin of Gondwana. The presence of granitic intrusions derived from variously mature crustal sources at different times suggests heterogeneous crustal segments to having been involved in the magmatic-arc system during its multistage evolution.en_US
dc.descriptionManuscript. Published version available in <a href=http://dx.doi.org/10.1007/s00531-016-1416-y>International Journal of Earth Sciences (2016). doi:10.1007/s00531-016-1416-y</a>en_US
dc.identifier.citationSoejono, I., Janoušek, V., Žáčková, E. et al. Int J Earth Sci (Geol Rundsch) (2016). doi:10.1007/s00531-016-1416-yen_US
dc.identifier.cristinIDFRIDAID 1420296
dc.identifier.doi10.1007/s00531-016-1416-y
dc.identifier.issn1437-3254
dc.identifier.issn1437-3262
dc.identifier.urihttps://hdl.handle.net/10037/10628
dc.language.isoengen_US
dc.publisherSpringeren_US
dc.relation.journalInternational journal of earth sciences
dc.rights.accessRightsopenAccessen_US
dc.subjectVDP::Matematikk og Naturvitenskap: 400::Geofag: 450en_US
dc.subjectVDP::Mathematics and natural science: 400::Geosciences: 450en_US
dc.titleLong-lasting Cadomian magmatic activity along an active northern Gondwana margin: U–Pb zircon and Sr–Nd isotopic evidence from the Brunovistulian Domain, eastern Bohemian Massifen_US
dc.typeJournal articleen_US
dc.typeTidsskriftartikkelen_US
dc.typePeer revieweden_US


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