Print this pageCenozoic Sequence Stratigraphy of the Pannonian Basin, Hungary
VAKARCS, GABOR, A.
Detailed sequence stratigraphic analysis allowed the interpretation of fifty-eight depositional sequences in the middle Eocene through upper Miocene succession of the Pannonian Basin (Hungary), the largest basin of the central Paratethyan area (central/eastern Europe). Depositional sequences were identified based on the analysis of published geological descriptions of outcrops and study of 10,000 km of 2D reflection seismic profiles and 145 hydrocarbon exploration wells. The sequences were stratigraphically positioned on the basis of calcareous nannofossil and planktonic foraminifera data from 28 wells, and magnetostratigraphic data from 6 wells.
The Pannonian Basin is an integral part of the Alpine mountain belts of eastern central Europe. It overlies the Mesozoic thrust sheets of the eastern Alps, Carpathians, and Dinarides. The middle Miocene to present section of the Pannonian Basin is superimposed on a middle Eocene to early Miocene retroarc flexural basin complex, as a result of back-arc extension. The Paleogene basin evolution primarily was driven by compressional tectonics; the Neogene evolution was driven by extensional tectonics. Tectonic regimes produced transgressive-regressive facies cycles, which reflect the individual tectonic evolution of the Pannonian Basin. However, the short-term glacio-eustatic falls overprinted the longer-term local tectonics.
Using sequence stratigraphy to identify sequence boundaries, stratigraphic traps, source rocks and reservoir rocks has resulted in better input dataks has resulted in better input data to understand the hydrocarbon maturation history of the Pannonian Basin.