In situ trace elements and U–Pb ages determination of zircons from diorite and anorthosite dykes intruding the Finero Phlogopite Peridotite (Ivrea-Verbano Zone, Southern Alps)

Zircon grains were separated from diorite and anorthosite dyke swarms intruding the mantle body of Finero Phlogopite Peridotite (Northernmost tip of the Ivrea-Verbano Zone, Southern Alps). All the dykes are highly discordant with respect to the mantle peridotite foliation and crop out along the right flank of the Rio Creves valley (Piedmont, Italy). The dykes are characterized by similar mineralogical composition, but show widely variable modal proportions.