caa a22 4500 475827651 CHVBK 20180406123833.0 cr unu---uuuuu 170329e20000901xx s 000 0 eng 10.1007/s005310000084 doi (NATIONALLICENCE)springer-10.1007/s005310000084 Relics of an early-Panafrican metabasite-metarhyolite formation in the Brno Massif, Moravia, Czech Republic [Elektronische Daten] [F. Finger, M. Tichomirowa, C. Pin, P. Hanžl] The Brno Massif in Moravia, Czech Republic, is an important exposure of Precambrian basement in central Europe. It includes large volumes of Cadomian granitoids and a narrow fault-bounded zone with metagabbros, metadiorites, and metabasalts. This so-called Central Basic Belt also contains some metarhyolites; one of these was dated by means of the zircon evaporation method at 725 ±15 Ma. Chemical and isotope data show that the dated rock represents a mantle-derived magma which is cosanguinous with surrounding MORB-type metabasites. The data suggest that the Brno Massif hosts the oldest metabasite complex currently known in central Europe. Its formation apparently coincides with the main period of ocean-floor spreading and island-arc formation in the Panafrican orogens. This lends further support to the theory that the Brno Massif is a Gondwana-derived element. Springer-Verlag Berlin Heidelberg, 2000 Key words Central European Variscides nationallicence Brno Massif nationallicence Metarhyolite nationallicence Metabasite complex nationallicence Geochemistry nationallicence Zircon geochronology nationallicence Cadomian nationallicence Panafrican nationallicence Finger F. Institut für Mineralogie der Universität, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria e-mail: Friedrich.Finger@sbg.ac.at Tel.: +43-662-80445445 Fax: +43-662-8044622, AT aut Tichomirowa M. Institut für Mineralogie der Universität, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria e-mail: Friedrich.Finger@sbg.ac.at Tel.: +43-662-80445445 Fax: +43-662-8044622, AT aut Pin C. Institut für Mineralogie der Universität, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria e-mail: Friedrich.Finger@sbg.ac.at Tel.: +43-662-80445445 Fax: +43-662-8044622, AT aut Hanžl P. Institut für Mineralogie der Universität, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria e-mail: Friedrich.Finger@sbg.ac.at Tel.: +43-662-80445445 Fax: +43-662-8044622, AT aut https://doi.org/10.1007/s005310000084 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s005310000084 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Finger F. Institut für Mineralogie der Universität, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria e-mail: Friedrich.Finger@sbg.ac.at Tel.: +43-662-80445445 Fax: +43-662-8044622, AT aut NATIONALLICENCE 700 1- Tichomirowa M. Institut für Mineralogie der Universität, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria e-mail: Friedrich.Finger@sbg.ac.at Tel.: +43-662-80445445 Fax: +43-662-8044622, AT aut NATIONALLICENCE 700 1- Pin C. Institut für Mineralogie der Universität, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria e-mail: Friedrich.Finger@sbg.ac.at Tel.: +43-662-80445445 Fax: +43-662-8044622, AT aut NATIONALLICENCE 700 1- Hanžl P. Institut für Mineralogie der Universität, Hellbrunnerstrasse 34, A-5020 Salzburg, Austria e-mail: Friedrich.Finger@sbg.ac.at Tel.: +43-662-80445445 Fax: +43-662-8044622, AT aut Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer