Structural and petrological evolution of the Beth-Ghinivert zone (Schistes Lustrés – Italian Western Alps)

Fabio Giacometti (a) & Gisella Rebay (a)
(a) Dipartimento di Scienze della Terra e dell'Ambiente, Università degli Studi di Pavia, via Ferrata, 1, 27100, Pavia, Italy. E-mail: fabio.giacometti@unipv.it

Calcschists and associated lentiform blocks of metabasites record a poly-phase tectono-metamorphic evolution at Beth-Ghinivert (Schistes Lustrés Unit, Western Alps). Combining field observations with petrographical, minero-chemical studies and P-T estimates allowed to recognise that a metamorphic peak under epidote-blueschist facies conditions was followed by a progressive re-equilibration under greenschist facies conditions.

Beth-Ghinivert, epidote blueschist facies metamorphism, Schistes Lustrés