Podrobnosti záznamu

    The Late Paleozoic relations between Gondwana and Laurusia
Údaj o odpovědnosti
    W.S. McKerrow, Mac Niocaill, P.E. Ahlberg, G. Clayton, C.J. Cleal, R.M.C. Eagar
Další názvy
    Orogenic Processes: Quantification and Modelling in the Variscan Belt (Variant.)
    Ahlberg, P. E.
    Clayton, G.
    Cleal, C. J.
    Eagar, R. M. C.
    Mac Niocaill, C.
    McKerrow, W. S.
Zdrojový dokument - seriál
    Geological society special publication
    Vol. 179
    s. 9-20
    5 obr., 3 s.bibl.
    Zkr. název ser.: Geol. Soc. spec. Publ. (London).
Předmětová skupina
    vrásnění variské
    zóna suturová
Geografické jméno
    Afrika severní
    Amerika severní
    Česká republika
Klíčové slovo
Abstrakt (anglicky)
   Reconstructions based on biogeography, palaeomagnetism and facies distributions indicate that, in later Palaeozoic time, there were no wide oceans separateing the major continents. During the Silurian and Early Devonian time, many oceans became narrower so that only the less mobile animals and plants remained distinct. There were several continental collision: the Tronquist Sea (between Baltica and Avalonia) closed in Late Ordovician time, the Iapetus Ocean (between Laurentia and the newly merged continents of Baltica and Avalonia) closed in Silurian time, and the Rheic Ocean (between Avalonia and Gondwana and the separate parts of the Armorican terrane Assemblage) closed (at least partially) towards the end of Early Devonian time. Each of these closures was reflected by migrations of non-marine plants and animal as well as by contemporary deformation.
   New maps, based on palaeomagnetic and faunal data, indicate that Gondwana was close to Laurussia during the Devonian and Carboniferous periods, with fragments of Bohemia and other parts of the Armorican Terrane Assemblage interspersed between. It follows that, after Early Devonian time, the Variscan oceans of central Europe can never have been very wide. The tectonic evolution of Europe during Devonian and Carboniferous time was thus more comparable with the present-day mediterranean Sea than with the Pacific Ocean
    Česká geologická služba
Kód přispěvatele
    ČGS (UNM)
Zdrojový formát
Datum vložení
    19. 4. 2007
Datum importu
    8. 8. 2012