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Saxothuringian Zone
The Saxothuringian Zone, Saxo-Thuringian zone〔Kohl, Horst; Marcinek, Joachim and Nitz, Bernhard (1986). ''Geography of the German Democratic Republic'', VEB Hermann Haack, Gotha, pp. 8 ff. ISBN 978-3-7301-0522-1.〕 or Saxothuringicum is in geology a structural or tectonic zone in the Hercynian or Variscan orogen (380-270 million years old) of central and western Europe. Because rocks of Hercynian age are in most places covered by younger strata, the zone is not everywhere visible at the surface. Places where it crops out are the northern Bohemian Massif, the Spessart, the Odenwald, the northern parts of the Black Forest and Vosges and the southern part of the Taunus. West of the Vosges terranes on both sides of the English Channel are also seen as part of the zone, for example the Lizard complex in Cornwall or the Léon Zone of the Armorican Massif (Brittany).
==Location==
In central Europe the Saxothuringian Zone is situated between the Rhenohercynian Zone to the northwest and the Moldanubian Zone to the southeast.〔The subdivision of the central European Hercynian orogen in zones was first made by Kossmat (1927)〕 The Hercynian metamorphism of the former zone is generally lower grade; that of the latter zone higher grade than that of the Saxothuringian Zone. West of the Vosges the zone is displaced to the north by a major strike-slip fault, the Bray Fault.
The Saxothuringian Zone is in some places transsected by Permo-Triassic grabens and intramontane basins filled with Rotliegend sediments and older deposits. The Eger Graben in the northwest of the Czech Republic and the Saar-Nahe Basin in western Germany are examples of such structures.
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