Reconciling late faulting over the whole Alpine belt: from structural analysis to geochronological constrains (2020)

Data creators : Christian Sue [1] [2], Audrey Bertrand [3]
Project member : Pierre Sakic [4]
Related person : Raphaël Melior [2], Michaël Rabin [1] [2]
[1] : Laboratoire Chrono-environnement (UMR 6249) (Université de Franche-Comté)
[2] : Observatoire des Sciences de l'Univers - Terre, Homme, Environnement, Temps, Astronomie (UAR 3245) (Université de Franche-Comté)
[3] : MTA-ELTE Geological, Geophysical and Space Sciences Research Group - Hungarian Academy of Sciences, Eötvös University
[4] : LIttoral ENvironnement et Sociétés (UMR 7266)
Description :
The significance of late-stage fracturing in the European Alps in a large geodynamic context is reappraised by studying brittle deformations over the entire belt. In the internal Western Alps, paleostress datasets display a major occurrence of orogen-parallel extension resulting in normal faulting and associated strike-slip mode. There the direction of subhorizontal extension rotates with the bending of the Alpine belt. In the Central Alps, paleostress tensors also indicate orogen-parallel extensional regimes, both in the Bergell area and the Lepontine Dome, where the brittle structures are associated with ductile structures related to the formation of large-scale upright folds that accommodate most of the collisional shortening due to the north-directed component of the movement of the South-Alpine indenter. This brittle deformation phase is of Miocene age and is coeval with the propagation of the Alpine front toward the external Alpine domains. In the Eastern Alps, brittle deformation of the Tauern Window displays an overwhelming occurrence of orogen-parallel normal faulting and associated strike-slip regimes again, which is inferred to be driven by lateral extrusion of the orogenic wedge toward the Pannonian basin, partly due to indentation on the Dolomites indenter. The major orogen-parallel extensional signal of the brittle Cenozoic deformations appears remarkably stable all over the internal Alps. Extensional brittle structures are part of a late phase of collisional deformation, during which the propagation of the Alpine front of the Western Alps and the northward movement of the Southern Alpine and the Dolomites indenters in the Central and Eastern Alps were accommodated by orogen-parallel extension in the inner zones, at the scale of the entire chain.
Disciplines :
geochemistry & geophysics (sciences of the universe), geosciences, multidisciplinary (sciences of the universe)
Access details :
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General metadata

Data acquisition date : from Nov 1995 to Aug 2013
Data acquisition methods :
  • Derived or compiled data :
    Meso-scale fault measurements on the field, then dynamic stress inversion, then compilation of paleotensors.
Update periodicity : no update
Language : English (eng)
Formats : application/
Audience : Research


Spatial coverage :

  • Alpes: latitude between 48° 46' 9" N and 43° 51' 7" N, longitude between 3° 54' 25" E and 16° 2' 35" E

Time coverage :

Publications :
Record created 11 Feb 2020 by Christian Sue.
Local identifier: FR-18008901306731-2020-02-11.


dat@Chrono is a sub-portal of dat@UBFC, a metadata catalogue for research data produced at UBFC.

Terms of use
Université de Bourgogne, Université de Franche-Comté, UTBM, AgroSup Dijon, ENSMM, BSB, Arts des Metiers