Stress-induced late-stage subsidence anomalies in the Pannonian basin

Abstract

Subsidence, sedimentation and tectonic quiescence of the Pannonian basin was interrupted a few million years ago by tectonic reactivation. This recent activity has manifested itself in uplift of the western and eastern flanks, and continuing subsidence of the central part of the Pannonian basin. Low-to medium-magnitude earthquakes of the CarpathianPannonian region are generated mostly in the upper crust by reverse and wrench fault mechanisms. There is no evidence for earthquakes of extensional origin.2-D model calculation of the subsidence history shows that a recent increase in magnitude of horizontal compressional intraplate stress can explain fairly well the observed Quaternary uplift and subsidence pattern. We propose that this stress increase is caused by the overall Europe/Africa convergence. In Late Pliocene, consumption of subductible lithosphere at the eastern margin of the Pannonian basin was completed, and the lithosphere underlying the Pannonian basin became locked in a stable continental frame. Consequently extensional basin formation has come to an end, and compressional inversion of the Pannonian basin is in progress.

Polyphase tectonic subsidence evolution of the Vienna Basin inferred from quantitative subsidence analysis of the northern and central parts

“…This phase is characterized by the gradual structural inversion with an uplift of more than 200 m in the Vienna Basin, which also caused sediment deformation and erosion (Decker 1996;Strauss et al 2006). This regime is related with anomalous latestage vertical movements of the Pannonian and Carpathian region, caused by the isostatic rebound in the aftermath of continental convergence and slab detachment (Cloetingh et al 2006;Horváth and Cloetingh 1996).…”

Upper Miocene Pannonian sediments from Belgrade (Serbia): new evidence and paleoenvironmental considerations

“…It resulted from back-arc basin extension during the Miocene and subsequent compression during the Pliocene to Quaternary (Horváth & Cloetingh 1996; Cloetingh ing the chronostratigraphic division (Papp et al 1985;Magyar 1995;Rögl 1999;Magyar et al 1999;Harzhauser et al 2002Magyar et al 2006, 2007 and Horváth et al 2006). At about the Middle-Late Miocene boundary (ca.…”

Macroseismic intensity data of the 22 April 2013 Tenk (Hungary) earthquake

“…The Pannonian basin is a backarc basin whose formation started in the Early Miocene due to the Europe-Africa convergence (Royden et al, 1982;Ratschbacher et al, 1991;Horváth, 1993;Horváth and Cloetingh, 1996). Subduction of the European foreland and associated rollback of the subducted slab caused lithospheric extension and asthenospheric updoming during the Middle Miocene while discrete basins opened up due to the extension (Royden et al, 1982;Royden, 1988;Horváth, 1993;Bada et al, 2001;Horváth, 2007).…”

“…Subduction of the European foreland and associated rollback of the subducted slab caused lithospheric extension and asthenospheric updoming during the Middle Miocene while discrete basins opened up due to the extension (Royden et al, 1982;Royden, 1988;Horváth, 1993;Bada et al, 2001;Horváth, 2007). In the Late Miocene the asthenospheric dome cooled which led to the subsidence of the whole basin system (Horváth and Cloetingh, 1996;Horváth, 2007). In the latest Pliocene and Quaternary the movement of the Adriatic microplate led to the end of the subsidence and to the inversion of the Pannonian basin (Horváth, 1995;Horváth, 2007;Bada et al, 2007b).…”