Record details

Title
    Key Lower Palaeozoic faunas from near the Trans-European Suture Zone
Statement of responsibility
    L. Robin. M. Cocks
Other titles
    Palaeozoic Amalgamation of Central Europe (Variant.)
Author
    Cocks, L. Robin M.
Language
    anglicky
Source title - serial
    Geological society special publication
Vol./nr.
    Vol. 201
Pages
    p. 37-46
Year
    2002
Notes
    2 obr., 1 fot., 2 s. bibl.
    il.
    Zkr. název ser.: Geol. Soc. spec. Publ. (London).
Subject group
    Brachiopoda
    brunovistulikum
    kambrium
    ordovik
    paleobiogeografie
    paleogeografie
    rotace desek
    tektonika bloková
    terán
    trace fossils
    Trilobita
    zóna suturová
Geographical name
    ČR-Morava
    Polsko
    SRN
Keyword
    Faunas
    Key
    Lower
    Near
    Palaeozoic
    Suture
    Trans-European
    Zone
Abstract (in english)
   Following recognition of the Vendian to mid-Ordovician rotation of Baltica, with more than 55° of that rotation occurring in the Upper Cambrian and Lower Ordovician, the Tornquist Margin of Baltica must have faced northwards towards Laurentia and the Panthalassic Ocean, rather than, as now, southwestwards towards Gondwana (including Avalonia). Unequivocally Baltic endemic trilobite, brachiopod and other faunas are known from both the Cambrian and the Ordovician of the Holy Cross Mountains, Poland, and from both parts of them, i.e. the Malopolska Block and the Lysogóry Block. Whether or not these two blocks were united into a single terrane or were separate as two terranes is equivocal from the faunal evidence, and there is no faunal evidence of substantial strike-slip faulting of the blocks in relation to the main Baltic craton: they are perceived as having made up part of the margin of Baltica itself.
   However, both Holy Cross Mountain blocks were different and palaeogeographically separate from the Bruno-Silesian Block, whose continental origins are yet to be finally determined. The Ordovician clastic sediments at both Riigen, north Germany, and Pomerania, NW Poland, have yielded no macrofossils other than graptolites, but microfossils (acritarchs and chitinozoa) are interpreted as having been deposited at relatively high palaeolatitudes, i.e. at a higher palaeolatitude than Baltica, and may have been deposited in an ocean basin within the Tornquist Ocean between Baltica and Avalonia
Contributor
    Česká geologická služba
Contributor code
    ČGS (UNM)
Source format
    U
Entered date
    25. 3. 2008
Import date
    8. 8. 2012