The formation of the northwestern Dniepr-Donets Basin: 2-D forward and reverse syn-rift and post-rift modelling

N J Kusznir, S M Stovba, R A Stephenson, K N Poplavskii, Randell Stephenson

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Abstract

Forward and reverse modelling of structure and stratigraphy have been used to investigate the syn-rift (Devonian) and early post-rift (Carboniferous) evolution of the northwestern Dniepr-Donets Basin, Modelling shows that basin formation is consistent with Frasnian-Famennian rifting followed by post-rift subsidence starting in the early Tournaisian. Forward syn-rift modelling, using the flexural cantilever model of rift basin formation, satisfactorily models the observed syn-rift stratigraphic thicknesses and structure within the basin using total syn-rift extension of approximately 15 km in the region studied with a maximum beta stretching factor of 1.3. Forward structural and stratigraphic modelling suggests that the Devonian rifting, which formed the northwestern Dniepr-Donets Basin, was accompanied by regional uplift of the order of 300 m. Both forward and reverse (flexural backstripping) modelling of post-rift stratigraphy through the Carboniferous suggest that post-rift thermal subsidence, which commenced in the Tournaisian following Devonian rifting, was augmented by additional regional subsidence of the order of 300 m in middle Carboniferous times. Ir is suggested that this transient regional uplift event, which accompanied rifting and decayed in middle Carboniferous times, was generated by a mantle plume.

Original languageEnglish
Pages (from-to)237-255
Number of pages19
JournalTectonophysics
Volume268
Issue number1-4
Publication statusPublished - 31 Dec 1996

Keywords

  • Dniepr-Donets Basin
  • rifting
  • basin modelling
  • mantle plume
  • East European Platform
  • NORTH-SEA BASIN
  • SUBSIDENCE
  • GENERATION
  • EXTENSION
  • UPLIFT

Cite this

Kusznir, N. J., Stovba, S. M., Stephenson, R. A., Poplavskii, K. N., & Stephenson, R. (1996). The formation of the northwestern Dniepr-Donets Basin: 2-D forward and reverse syn-rift and post-rift modelling. Tectonophysics, 268(1-4), 237-255.