Silurian

Silurian rocks are reported from the Istanbul-Zonguldak Terranes in NW Anatolia, in the Taurides-Anatolides, as well as in the SE Anatolian Autochthon. The NW Anatolian Istanbul-and Zonguldak terranes were separated from the main body of NW Gondwana as a part of the Avalonian-Central European Terrane Assemblage (Perigondwanan Terrane Assemblage e.g. Nance et al, 2012) and drifted towards N across the Rheic Ocean. By this the differences (e.g. Lakova and Göncüo¤lu, 2005) in the paleogeographical setting has resulted in dissimilarities in litho- and biostratigraphy (Figure 1) between the Northern (Istanbul-Zonguldak) and Southern (Taurides-SE Anatolian Autochthon) areas (Göncüo¤lu and Kozlu, 1997). In the former group there are also differences in the lithostratigraphy (e.g. Kozlu et al, 2002a). In the Anatolides, the metamorphic edge of the Tauride-Anatolide platform, Middle and Upper Silurian low-grade metamorphic turbidites with black lydites and brownish limestone bands had been reported only from the Konya area, dated by conodonts (Göncüo¤lu et al, 2000).