Pre-conference field trip

From Neoproterozic sedimentation on the peri-Gondwanan extended shelf to the Variscan collision of terranes - the history preserved in the Kamieniec Metamorphic Belt and the Doboszowice Metamorphic Complex

guided by Jacek Szczepański (Institute of Geological Sciences, University of Wrocław), Mirosław Jastrzębski (Institute of Geological Sciences, Polish Academy of Sciences), Sławomir Ilnicki (Faculty of Geology, University of Warsaw) and 
Robert Anczkiewicz (Institute of Geological Sciences, Polish Academy of Sciences)

The field trip will be focused on rock successions exposed in the Kamieniec Metamorphic Belt and the Doboszowice Metamorphic Complex located in the Fore-Sudetic Block at the NE margin of the Bohemian Massif. Here, the crystalline basement forms small and isolated outcrops, emerging only in places from the overlying Cenozoic cover. The aim of the pre-conference field trip is to present the state-of-art data and interpretations related to provenance of the detrital material, its maximum depositional age and tectonic setting of deposition as well as structural and metamorphic evolution of the north-eastern part of the Bohemian Massif within the framework of the Central European Variscides.


Post-conference field trip

Late- to post-Variscan structural evolution of tectonic grabens on top of the Góry Sowie Massif

guided by Aleksander Kowalski (Polish Geological Institute-NRI)

The field trip will be focused on tectonics and sedimentology of the early Carboniferous (Viséan to Bashkirian (?)) terrestrial and marine unmetamorphosed succession preserved on top of the Góry Sowie Massif (GSM) – a high-grade metamorphic unit situated in the Central Sudetes (NE Bohemian Massif). The Carboniferous deposits, traditionally referred to as the “Culm of the Sowie Mountains”, occur here within several isolated, narrow tectonic grabens or half-grabens, and record the fold-and-thrust type, late- Variscan deformation followed by younger brittle faulting. The main aim of the post-conference field trip is to discuss the structural development of these intriguing tectonic features, which probably represent erosional relics of an originally broader late-Variscan basin system. The field-trip stops will be located within the Walim (WG; stop 1), Glinno (GG; stop 2) and Kamionki Grabens (KG; stops 3,4).

Tectonic sketch map of the Góry Sowie Massif and surrounding tectonic units (compiled after Sawicki, 1995 and based on author’s own data), together with their location in the Bohemian Massif and Central Europe (inset). Abbreviations: BrM – Braszowice Ophiolite Massif, BU – Bardo Unit, GG – Glinno Graben, ISS – Intra-Sudetic Synclinorium, KG – Kamionki Graben, KMB — Kamieniec Metamorphic Belt, KMC – Kaczawa Metamorphic Complex, KMU – Kłodzko Metamorphic Unit, NRM – Nowa Ruda Ophiolite Massif, NZ – Niemcza Shear Zone, S-JG – Sokolec-Jugów Graben, SM – Szklary Ophiolite Massif, SSM – Strzegom-Sobótka Granitoid Massif, ŚO – Ślęża Ophiolite Massif, ŚU – Świebodzice Unit, WG – Walim Graben. Faults: GF – Głuszyca Fault, SMF – Sudetic Marginal Fault, SzF – Szczawienko Fault.