Pre-conference field trip
From rifted margin to nappe stacking: Permo-Mesozoic structural evolution of the Aggtelek and Northern Rudabánya Hills. (spotlight on salt tectonics and nappe stacking)
led by: László Fodor, Éva Oravecz, Herkules Gábor Héja, Kinga Hips, Szilvia Kövér
The first part of the field trip will present shreds of evidence for salt tectonics in the Aggtelek nappe, the local development of the Silica (Szilice) nappe system which occupies the highest tectonic position within the Inner Western Carpathian Nappe pile.
Studied deformation features include the late Early to Middle Triassic syn-sedimentary deformation, slump folds, tilted normal faults, salt diapirs, salt walls, secondary salt welds, and related alteration features in host carbonates. We will discuss the separation of Triassic salt-related structures and Cretaceous contractional features. In this way, participants may have the opportunity to discuss the topic of the emplacement of the Silica (Szilice) nappes. In the second part of the field trip we will make a cross-section across the northern Rudabánya Hills and will mostly target the metamorphosed Torna (Turňa), Telekesoldal (Meliata sensu lato) units and some intervening Bódva units; their metamorphism, the complex multiphase nappe thrusting. The mostly walking trip will cross numerous nappe contact (not really exposed). Participants can discuss the position of the equivalents of the Meliata (sensu lato) and Turna Nappe Units.
This will be a classical field trip, visiting roadcuts and natural outcrops (including bushwalking to smaller outcrops). Weather conditions may change from sunny to rainy (but hopefully we will avoid snowfall).
Post-conference field trip
From Triassic rifted margin sequences to Jurassic deep marine sediments: nappe stacking in the Southern Rudabánya Hills and Aggtelek margins. (spotlight on low-grade metamorphism and deformation)
led by Szilvia Kövér, Kinga Hips, László Fodor
Itinery: Kazincbarcika–Perkupa–Szőlősardó–Kazincbarcika. The trip will terminate around 16h in order that you could return home that evening/night
In the first part of the walking trip, we will study the lithology and structure of the metamorphosed Jurassic (Telekesoldal), their Upper Triassic rhyolite clasts, and their relationship to diagenetic Bódva units. Later, we visit some sites of other nappes composing the boundary zone between the Rudabánya and Aggtelek Hills (Lászi, Szőlősardó units). We can discuss rifted margin development and stratigraphy, Early Cretaceous metamorphism, ductile deformation, and nappe stacking. We will see some carbonate tectonic breccias (rauhwackes) and discuss their role in the emplacement of the Silica-type nappes.