caa a22 4500 388110406 CHVBK 20180307125352.0 cr unu---uuuuu 161130s1999 xx s 000 0 eng 10.1017/S0263593300007197 doi S0263593300007197 pii (NATIONALLICENCE)cambridge-10.1017/S0263593300007197 The Polish Sudetes: Caledonian or Variscan? [Elektronische Daten] The Polish Sudetes on the NE margin of the Bohemian Massif comprise a complex mosaic of pre-Permian basement units, traditionally included in the Variscides. A hypothesis of significant Caledonian orogenesis in this area originated in the 1920s, was subsequently rejected, and then was recently revived in models which invoked Early Palaeozoic to Early-Mid Devonian subduction and continental collision along a proposed extension of the Tornquist suture zone. We reassess the evidence invoked in support of the Caledonian orogeny, such as supposed regional pre-Upper Devonian unconformity, Ordovician bimodal magmatism and radiometric, palaeontological, palaeomagnetic and structural data, and suggest these are either inconclusive or misinterpreted. On the other hand, the Sudetes record Mid?-Late Devonian blueschist metamorphism followed by an Early Carboniferous regional high temperature event, widespread Late Devonian/Early Carboniferous flysch/molasse sedimentation and abundant granite intrusion in the Carboniferous to Early Permian. We discuss the usage of the term ‘Caledonian' in a plate tectonic context and suggest it should not be used simply to denote Early to Mid-Palaeozoic tectonic activity. The tectonic evolution of the Sudetes was temporally different from, and resulted from convergence of different crustal domains than that of the British-Scandinavian-Pomeranian Caledonides. The Sudetic Palaeozoic sequences most probably developed on Armorican Neoproterozoic crust and in adjacent oceanic(?) domains and, therefore, the Sudetes form part of the Variscan orogenic belt. Copyright © Royal Society of Edinburgh 1999 Armorica nationallicence Bohemian Massif nationallicence East Avalonia nationallicence metamorphism nationallicence Palaeozoic nationallicence SW Poland nationallicence radiometric/isotopic data nationallicence tectonics nationallicence terranes nationallicence Tornquist Suture nationallicence Rheic Ocean nationallicence Aleksandrowski P. Uniwersytet Wroclawski, Instytut Nauk Geologicznych, Cybulskiego 30, 50-205 Wroclaw, Poland Kryza R. Uniwersytet Wroclawski, Instytut Nauk Geologicznych, Cybulskiego 30, 50-205 Wroclaw, Poland Mazur S. Uniwersytet Wroclawski, Instytut Nauk Geologicznych, Cybulskiego 30, 50-205 Wroclaw, Poland Pin C. Uniwersytet Wroclawski, Instytut Nauk Geologicznych, Cybulskiego 30, 50-205 Wroclaw, Poland Zalasiewicz J. A. Uniwersytet Wroclawski, Instytut Nauk Geologicznych, Cybulskiego 30, 50-205 Wroclaw, Poland Transactions of the Royal Society of Edinburgh: Earth Sciences Royal Society of Edinburgh Scotland Foundation 90/2(1999), 127-146 0263-5933 90:2<127 1999 90 TRE https://doi.org/10.1017/S0263593300007197 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S0263593300007197 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Aleksandrowski P. Uniwersytet Wroclawski, Instytut Nauk Geologicznych, Cybulskiego 30, 50-205 Wroclaw, Poland NATIONALLICENCE 700 1- Kryza R. Uniwersytet Wroclawski, Instytut Nauk Geologicznych, Cybulskiego 30, 50-205 Wroclaw, Poland NATIONALLICENCE 700 1- Mazur S. Uniwersytet Wroclawski, Instytut Nauk Geologicznych, Cybulskiego 30, 50-205 Wroclaw, Poland NATIONALLICENCE 700 1- Pin C. Uniwersytet Wroclawski, Instytut Nauk Geologicznych, Cybulskiego 30, 50-205 Wroclaw, Poland NATIONALLICENCE 700 1- Zalasiewicz J. A. Uniwersytet Wroclawski, Instytut Nauk Geologicznych, Cybulskiego 30, 50-205 Wroclaw, Poland NATIONALLICENCE 773 0- Transactions of the Royal Society of Edinburgh: Earth Sciences Royal Society of Edinburgh Scotland Foundation 90/2(1999), 127-146 0263-5933 90:2<127 1999 90 TRE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge