Field trip 3, Friday 27th September 2024 (Full day)

The tectono-sedimentary record in the central NCA: from passive margin to the onset of orogeny

Guides: Oscar Fernandez, Hugo Ortner, Diethard Sanders

The central NCA thrust sheets are detached above a Permo-Triassic evaporitic-clastic sequence (Haselgebirge - Werfen) that deposited during the latest stages of rifting. The preserved Triassic to Lower Jurassic stratigraphic succession above, records the progressive deepening of the ensuing Tethyan passive margin with ongoing salt tectonics. The overlying Middle Jurassic to Cretaceous sediments record the initial inversion of the passive margin, locally strongly conditioned by the interaction of pre-existing salt structures. The field trip will be conducted along the Salzach and Lammer valleys (between Hallein and Abtenau) and will include outcrop and panorama (weather-dependent) stops.