Correlation of Upper Julian to Lower Tuvalian (Carnian) depositional cycles from the Balatonhenye – Barnag area, Balaton Highland, Hungary

2002 
Three shallowing upward and one deepening upward depositional cycles were described from the Upper Julian to Lower Tuvalian (Carnian) Sandorhegy Limestone Formation from the Balatonhenye – Barnag area. Lithological and microfacies characteristics of the depositional cycles suggest contemporaneous platform and basin sedimentation. Coarsening upward feature is certainly characteristic for Cycle I, yet progradation is doubtful. Cycle II represents platform sedimentation consisting of calcareous peritidal unit that progrades into the adjacent basin. Coeval deeper water sediments were mixed showing a coarsening upward trend from terrigenous mudstones to calcareous wacke-packstones (slope sediments) and grainstones (shoals). These cycles are asymmetric and were driven only by eustatic sea-level changes. Cycle IIIa, developed only in the basin, shows a gradual deepening upward trend. The laterally equivalent cycle on the platform is confined to an erosional hiatus. Tectonic subsidence along with eustatic sea-lev...
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