Post-nappe brittle extension in the inner Western Alps (Schistes lustrés) following late ductile exhumation : a record of synextension block rotation ? - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Terra Nova Année : 2003

Post-nappe brittle extension in the inner Western Alps (Schistes lustrés) following late ductile exhumation : a record of synextension block rotation ?

Résumé

Fault data collected from the Schistes Lustre' s domain point to the existence of successive steps of deformation and indicate that extension is not multidirectional. This study underlines the continuity between the patterns of late brittle ⁄ ductile exhumation tectonics and brittle deformation, and strenghtens the view that extensional movements dominate in shallow levels of the inner Western Alps since at least 35-30 Ma. The progressive clockwise rotation of the earliest directions of extension with time is compatible with the amount of anticlockwise rotation from c. 35 Ma determined by recent palaeomagnetic studies, whereas the last documented N-S extension may reflect a short-lived stage of orogen-parallel extension.
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Dates et versions

hal-00021617 , version 1 (23-03-2006)

Identifiants

  • HAL Id : hal-00021617 , version 1

Citer

Philippe Agard, Marc Fournier, Olivier Lacombe. Post-nappe brittle extension in the inner Western Alps (Schistes lustrés) following late ductile exhumation : a record of synextension block rotation ?. Terra Nova, 2003, 15, pp.306-314. ⟨hal-00021617⟩
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