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Trans-European Suture Zone

Geologic map of Europe showing the Baltic Shield and East European Platform (   ) and European orogenic belts (Caledonian           ; Variscan   ; Alpine   ). Parts of the Trans-European Suture Zone (STZ, TEF and TTZ) are shown as bands of black colour between the North Sea and the Black Sea.

The Trans-European Suture Zone (TESZ), also known as the Tornquist Zone, is the crustal boundary between the Precambrian East European Craton and the Phanerozoic orogens of South-Western Europe. The zone runs from the North Sea to the Black Sea. The north-western part of the zone was created by the collision of Avalonia and Baltica/East European Craton in the Late Ordovician. The south-eastern part of the zone, now largely concealed by deep sedimentary basins, developed through Variscan and Alpine orogenic events.

Various branches of the TESZ go under different names:

  • The Teisseyre-Tornquist Zone (TTZ) in Ukraine and Poland.
  • The Sorgenfrei-Tornquist Zone (STZ) through Scania (Sweden), Kattegat, and North Jutland (Denmark).
  • The Trans-European Fault (TEF), Thor-Tornquist Suture or Thor Suture through southern Denmark.

The latter two branches (STZ and TEF) span a triangular area of numerous faults, called the Tornquist Fan.[1][2][3][4]

  1. ^ Thybo, H. (1997). "Geophysical characteristics of the Tornquist Fan area, northwest Trans-European Suture Zone: Indication of late Carboniferous to early Permian dextral transtension". Geological Magazine. 134 (5): 597–606. doi:10.1017/s0016756897007267. S2CID 129418419.
  2. ^ Torsvik, Trond H.; Rehnström, Emma F. (2003). "the Tornquist Sea and baltica-Avalonia docking" (PDF). Tectonophysics. 362 (1–4): 67–82. Bibcode:2003Tectp.362...67T. doi:10.1016/s0040-1951(02)00631-5.
  3. ^ Janutyte; et al. (2015). "Upper mantle structure around the Trans-European Suture Zone obtained by teleseismic tomography". Solid Earth. 6: 73–91. doi:10.5194/se-6-73-2015.
  4. ^ Narkiewicz, M; et al. (2015). "Transcurrent nature of the Teisseyre–Tornquist Zone in Central Europe: results of the POLCRUST-01 deep reflection seismic profile". International Journal of Earth Sciences. 104 (3): 775–796. doi:10.1007/s00531-014-1116-4. S2CID 129630403.
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