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<p>The Pannonian Basin System, comprising multiple sub-basins, forms the broader geological framework of this study, which focuses specifically on the North Danube Basin. Geochronology, sediment accumulation patterns, and tectonic subsidence modeling were integrated to update the tectono-sedimentary history of the basin. A volcanogenic marker bed dated at 13.75 ± 0.14&#xa0;Ma using <sup>40</sup>Ar/<sup>39</sup>Ar method provides a key stratigraphic reference for the Badenian (Langhian/Serravallian) stage. The subsidence history indicates rapid tectonic activity during the lower Badenian (Langhian), upper Badenian (lower Serravallian), and Sarmatian (upper Serravallian) stages, transitioning to a more stable setting during the lower Pannonian (Tortonian). Vitrinite reflectance models reveal hydrocarbon maturation across all sub-basins, with variations in oil window depths attributed to differential heat flow near volcanic fields. This study also investigates the anomalously high sediment accumulation rates in continental back-arc basins, exemplified by the North Danube Basin.</p> Graphical abstract <p></p>

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Tectono-sedimentary evolution of the North Danube Basin: insights from 40Ar/39Ar geochronology and basin modeling within the Pannonian back-arc system

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2025年7月23日

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  • Samuel Rybár,
  • Petronela Nováková,
  • Katarína Šarinová,
  • Júlia Kotulová,
  • Fred Jourdan,
  • Celia Mayers

摘要

The Pannonian Basin System, comprising multiple sub-basins, forms the broader geological framework of this study, which focuses specifically on the North Danube Basin. Geochronology, sediment accumulation patterns, and tectonic subsidence modeling were integrated to update the tectono-sedimentary history of the basin. A volcanogenic marker bed dated at 13.75 ± 0.14 Ma using 40Ar/39Ar method provides a key stratigraphic reference for the Badenian (Langhian/Serravallian) stage. The subsidence history indicates rapid tectonic activity during the lower Badenian (Langhian), upper Badenian (lower Serravallian), and Sarmatian (upper Serravallian) stages, transitioning to a more stable setting during the lower Pannonian (Tortonian). Vitrinite reflectance models reveal hydrocarbon maturation across all sub-basins, with variations in oil window depths attributed to differential heat flow near volcanic fields. This study also investigates the anomalously high sediment accumulation rates in continental back-arc basins, exemplified by the North Danube Basin.

Graphical abstract