Graphitic schists from the Pennine Basement, Tauern Window, Austria, contain fragments of pteridophyll leaves. They are preserved, despite the overall strong deformation and metamorphism at amphibolite facies conditions (-525"C, 750+100 MPa), due to a particular strain path with volume loss by pressure solution. They were determined as cf. CuEZipferidiurn sp. indicating a Permo-Carboniferous age. This depositional age is similar to radiometric age data obtained for the intrusion of nearby metagranitoids, indicating either tectonic contacts between the metagranitoids and the graphite schists, or a very active and rapidly changing tectonic regime during the Hercynian event.
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