Hiatuses between the base of the Pennsylvanian and the base of the Triassic in the Bohemian Massif (Czech Republic)


Authors: Pešek J

Published in: Bulletin of Geosciences, volume 80, issue 1; pages: 67 - 78; Received 30 July 2004; Accepted in revised form 12 December 2004;

Keywords: Bohemian Massif, Late Carboniferous, Permo-Triassic, break in sedimentation,

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A number of hiatuses can be distinguished in the Carboniferous and Permian of the Bohemian Massif. They can be subdivided into three categories. The most important ones are represented by breaks in deposition on a regional scale, such as between the Early and Middle (locally even Late) Namurian in the Upper Silesian Basin, Bolsovian and Westphalian D, and between Stephanian B and C in northeastern, central, and western Bohemia, and between Autunian and Saxonian in the Krkonoše Piedmont and the Intra-Sudetic basins. The presence of hiatuses at these levels has been also reported from a number of European Late Paleozoic basins. The second category of such breaks in deposition occurs only in parts of certain basins. It includes hiatuses in the Bolsovian of the Kladno-Rakovník Basin, between Stephanian C and Autunian, and in the Autunian within the Intra-Sudetic and/or Krkonoše Piedmont basins. The sharp boundary between Permian and Triassic deposits in the Intra-Sudetic and Krkonoše Piedmont basins is also related to this category. The third category includes the presumed (Wagner 1977) but hitherto unproven hiatus between the Westphalian D and the Late Stephanian B in central and western Bohemia.