VERLAGUET , Anne

The Monviso metaophiolite complex (W. Alps) is an almost intact fragment of Tethyan oceanic lithosphere metamorphosed to eclogite-facies peak metamorphic conditions during Alpine subduction. This 1:20.000 scale geological map encompasses, in an area of ∼35 km2, the Monviso Unit (MU) and the Lago Superiore Unit (LSU). Major focus was given to...

Brecciated eclogite clasts from the Monviso ophiolite in the Western Alps fossil subduction zone preserve healed fractures within garnet crystals. These fractures are divided into two distinct populations based on chemical and textural criteria. Diffusion modeling on profiles across fractures identifies a characteristic diffusive timescale for...

The Queyras-Monviso traverse of the Schistes Lustrés complex, is a stack of underplated nappes of oceanic rocks subducted from blueschist- to eclogite-facies conditions. This study reports on salinities and gas contents of primary fluid inclusions trapped in high pressure veins from metasediments and metamafic rocks (445 fluid inclusions in 22...

In the Western Alps, the External Crystalline Massifs (ECM) are key places to investigate the kinematics and thermal structure of a collisional crustal wedge, as their paleo-brittle/ductile transition is now exhumed at the surface. New (U–Th–Sm)/He data on zircon and new Raman Spectroscopy on Carbonaceous Material (RSCM) data from the Aiguilles...

International audience

Le but de cette contribution est de documenter et comprendre à la foisla cinématique des déformations collisionelles à l'échelle des Alpes externesoccidentales et le rôle de la structure de la marge européenne danscette structuration orogénique.Dans un premier temps, nous présentons des données nouvelles, structurales,microstructurales et...