The link between tectonics and sedimentation in back-arc basins

New genetic constraints from the analysis of the Pannonian Basin

A. Balázs, L. Matenco, I. Magyar, F. Horváth, S. Cloetingh

Research output: Contribution to journalArticle

42 Citations (Scopus)

Abstract

The architecture of sedimentary basins reflects the relationship between accommodation space and sediment supply, their rates and localization being variable during basin evolution. The mechanisms driving the interplay between tectonics and sedimentation in extensional back-arc basins overlying rheological weak zones inherited from an earlier orogenic evolution are less understood. A typical example is the Pannonian back-arc basin of Central Europe. It is floored by continental lithosphere and was affected by large amounts of extension driven by the subduction rollback that took place in the Carpathians and/or Dinarides. A novel kinematic and seismic sequence stratigraphic interpretation calibrated by wells allows the quantification of the link between the formation of half grabens and coeval sedimentation in the Great Hungarian Plain part of the basin. While the lower order tectonic-induced cycles characterize the main phases of extension in various subbasins, the higher-order cyclicity and associated unconformities define individual moments of fault (re)activation. Our novel interpretation of a temporal and spatial migration of extension during Miocene times explains the contrasting present-day strike of various subbasins as a result of their gradual clockwise rotation. Incorporating the observed asymmetry, in particular the associated footwall exhumation, infers that the amount of extension is much larger than previously thought. The quantitative link between tectonics and sedimentation has allowed the definition of a novel model of sedimentation in asymmetric basins that can be ported to other natural scenarios of similarly hyperextended back-arc basins observed elsewhere.

Original languageEnglish
Pages (from-to)1526-1559
Number of pages34
JournalTectonics
Volume35
Issue number6
DOIs
Publication statusPublished - Jun 1 2016

Fingerprint

Tectonics
Sedimentation
tectonics
arcs
sedimentation
basin
continental lithosphere
cyclicity
footwall
Sediments
Kinematics
basin evolution
reactivation
exhumation
Chemical activation
sedimentary basin
Central Europe
unconformity
asymmetry
subduction

Keywords

  • back-arc extension
  • Carpathians
  • inversion tectonics
  • Pannonian Basin
  • tectonic system tracts

ASJC Scopus subject areas

  • Geochemistry and Petrology
  • Geophysics

Cite this

The link between tectonics and sedimentation in back-arc basins : New genetic constraints from the analysis of the Pannonian Basin. / Balázs, A.; Matenco, L.; Magyar, I.; Horváth, F.; Cloetingh, S.

In: Tectonics, Vol. 35, No. 6, 01.06.2016, p. 1526-1559.

Research output: Contribution to journalArticle

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