Original paper

The Lower Badenian transgressive-regressive cycles – a case study from Oslavany (Carpathian Foredeep, Czech Republic)

Nehyba, Slavomír; Holcová, Katarína; Gedl, Przemysław; Doláková, Nela

Neues Jahrbuch für Geologie und Paläontologie - Abhandlungen Band 279 Heft 2 (2016), p. 209 - 238

published: Feb 17, 2016
published online: Feb 1, 2016

DOI: 10.1127/njgpa/2016/0548

BibTeX file

ArtNo. ESP155027902005, Price: 29.00 €

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Abstract

Two newly drilled boreholes (OSL-1 and OSL-2) at Oslavany (Carpathian Foredeep, Czech Republic, a holostratotype of the Moravian/Lower Badenian) provide data documenting the processes of the Lower Badenian marine transgression and regression along the passive margin of the peripheral foreland basin (south-eastern margin of the Bohemian Massif). Three facies associations show the evolution of the deposition and distinct basin margin paleogeography. Deposits of marine transgression (transgressive lag) are followed by open-marine (outer to inner shelf) deposits interpreted as transgressive and highstand systems tract. They reflect a cratonward shift of the coastline. The topmost foreshore and upper shoreface deposits (falling stage systems tract) recorded forced regression and basinward shift of the shoreline. The recorded transgressive-regressive cycle was induced by the co-incidence of global TB 2.4. sea-level cycle and forebulge subsidence. The identified higher-frequency cycles were interpreted as climatically controlled.

Keywords

provenanceshoreline positionfacies analysesforaminiferacalcareous nannoplanktondinoflagellate cysts