02 Sep 2021

02 Sep 2021

Review status: this preprint is currently under review for the journal SE.

Together but separate: decoupled Variscan (late Carboniferous) and Alpine (Late Cretaceous – Paleogene) inversion tectonics in NW Poland

Piotr Krzywiec1, Mateusz Kufrasa1, Paweł Poprawa2, Stanisław Mazur3, Małgorzata Koperska4, and Piotr Ślemp4 Piotr Krzywiec et al.
  • 1Institute of Geological Sciences, Polish Academy of Sciences, ul. Twarda 51/55, 00-818 Warsaw, Poland
  • 2Faculty of Geology, Geophysics and Environmental Protection, AGH University of Science and Technology, al. Mickiewicza 30, 30-059 Kraków, Poland
  • 3Institute of Geological Sciences, Polish Academy of Sciences, ul. Senacka 1, 31-002 Kraków, Poland
  • 4PGNiG S.A., Plac Staszica 9, 64-920 Piła, Poland

Abstract. In Europe, formation of the Palaeozoic Variscan orogenic belt, and then the Mesozoic-Cenozoic Alpine-Carpathian orogenic belt led to a widespread inversion events within forelands of both orogenic domains. We used legacy 2D seismic data together with the newly acquired 3D seismic data that for the first time precisely imaged sub-Zechstein (i.e. sub-evaporitic) upper Palaeozoic succession in NW Poland in order to develop quantitative, balanced 2D model of the late Palaeozoic – recent evolution of this area, characterised by a complex pattern of repeated extension and inversion. Four main tectonic phases have been determined: (1) Late Devonian – early Carboniferous extension related to extensional reactivation of Caledonian thrusts, (2) late Carboniferous inversion caused by Variscan orogeny, (3) Permo-Mesozoic subsidence related to the development of the Polish Basin, and (4) its Late Cretaceous – Paleogene inversion. Variscan and Alpine structures form superimposed multilayer inversion system, mechanically decoupled along the Zechstein evaporites.

Piotr Krzywiec et al.

Status: final response (author comments only)

Comment types: AC – author | RC – referee | CC – community | EC – editor | CEC – chief editor | : Report abuse
  • RC1: 'Comment on se-2021-105', Gabor Tari, 24 Sep 2021
    • AC1: 'Reply on RC1', Piotr Krzywiec, 11 Nov 2021
  • RC2: 'Comment on se-2021-105', Mark Cooper, 07 Oct 2021
    • AC2: 'Reply on RC2', Piotr Krzywiec, 11 Nov 2021

Piotr Krzywiec et al.

Piotr Krzywiec et al.


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Latest update: 25 Jan 2022
Short summary
Legacy 2D seismic data together with the newly acquired 3D seismic data were used to construct new model of geological evolution of NW Poland during last 400 Ma. It illustrates how destruction of Caledonian orogen in Late Devonian-early Carboniferous led to formation of half-grabens, how they were inverted in late Carboniferous, how study area evolved during formation of the Permo-Mesozoic Polish Basin and finally how supra-evaporitic structures were inverted in Late Cretaceous-Paleogene.