The structure of the Gran Paradiso basement (Pennine zone, Italian W. Alps)

Abstract

Detailed structural analysis and mapping in the northern part of the Gran Paradiso massif suggest that the massif is a gneiss-cored fold nappe. The timing of the associated deformation relative to the Alpine metamorphism points to development of the nappe structure in a stage between the Eoalpine HP metamorphism and the peak of the Lepontine greenschist facies event.