Geometry and kinematics of early Alpine nappes in a Briançonnais basement (Ambin Massif, Western Alps) - Archive ouverte HAL
Article Dans Une Revue Comptes Rendus Géoscience Année : 2004

Geometry and kinematics of early Alpine nappes in a Briançonnais basement (Ambin Massif, Western Alps)

Résumé

Petrological and structural observations from the Ambin pre-alpine basement dome and from its Briançonnais and Piedmont covers show an early D1 nappe-forming event overprinted by a major D2 (+ D3) ductile shearing deformation. The D1 event is characterised by garnet-blueschist facies metamorphic assemblages retrogressed to greenschist facies conditions during D2 then D3 stages near the top of the dome. North-verging D1 structures preserved in the core of the dome are consistent with alpine evolutionary models, in which exhumation of HP–LT metamorphic alpine rocks occurs initially in a north–south direction.
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Dates et versions

hal-00121693 , version 1 (21-12-2006)

Identifiants

  • HAL Id : hal-00121693 , version 1

Citer

Jérôme Ganne, Jean-Michel Bertrand, Serge Fudral. Geometry and kinematics of early Alpine nappes in a Briançonnais basement (Ambin Massif, Western Alps). Comptes Rendus Géoscience, 2004, 336, pp.1219-1226. ⟨hal-00121693⟩
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