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In the External Hellenides two crustal types are developed: (1) a Variscan basement overlain by the Tyros Unit and (2) a presumably Panafrican basement overlain by the Phyllite–Quartzite Group (Late Carboniferous–Early Triassic) and the Plattenkalk Group (Permian–Oligocene). If we accept this assumption, the Plattenkalk and the Phyllite–Quartzite Groups fit well into the Permian–Triassic palaeogeography...
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