Variscan structures and their control on latest to post-Variscan basin architecture: insights from the westernmost Bohemian Massif and southeastern Germany

Abstract. The Bohemian Massif exposes structures and metamorphic rocks remnant from the Variscan orogeny in central Europe is bordered by Franconian Fault System (FFS) to west. Across FFS, units are buried Permo-Mesozoic sedimentary rocks. We integrate existing DEKORP 2D seismic reflection, well, surface geological data with newly acquired FRANKEN survey investigate possible westward continuation of tectonostratigraphic their influence on latest post-Variscan basin development. Subsurface stratigraphy obtained available wells tied reflection profiles using a synthetic seismogram calculated density velocity logs. Below cover, three main basement identified facies descriptions that compared characteristics exposed east FFS. Our results show upper Paleozoic low-grade metasedimentary nappes bounded transported shear zones ca. 65 km west Basement footwall interpreted as Cadomian overlaying sequences. location normal fault-bounded late Carboniferous–Permian basins controlled geometry underlying zones. Some these faults reactivated steep reverse during regional Upper Cretaceous inversion. also highlight reactivation gradually decreases