Marcello Franceschelli

TL;DR: In this article, an analysis of the Triassic Verrucano metasediments of the Northern Apennines has been carried out and the authors have reported that the Si content of muscovite and geological arguments, pressures of between 3 and 5 kbar are estimated, with temperatures ranging from 300°C to about 450°C.

TL;DR: In this paper, the Sardinian segment of the Variscan chain is divided into four tectonometamorphic zones from NE to SW: 1) Inner zone, with medium-to high-grade metamorphic rocks and migmatites; 2) Internal Nappe zone with low-to medium-grade rocks; 3) External nappe Zone, with lowgrade metmorphic rocks; 4) External zone with very lowto low grade rocks.

TL;DR: In this paper, a comparison of petro-tectonic features recorded in the Variscan Massifs scattered throughout the Alps, the Corsica-Sardinia-Maures-Tanneron Massif, the Calabria-Peloritani Arc, and the Northern Apennines, has allowed them to propose that they belonged to the same geodynamic realm until Late Carboniferous time.

TL;DR: In this article, the SHRIMP analyses of zircons from a single sample of mafic eclogite (Punta de li Tulchi, Sardinia, Italy) are reported.

TL;DR: The migmatites from Punta Sirenella (NE Sardinia) are layered rocks containing 3.5-vol.% of centimeter-sized stromatic leucosomes which are mainly trondhjemitic and only rarely granitic in composition as discussed by the authors.