New noble gas data are presented for ultramafic mantle xenoliths, occurring in 10-20 Ma old volcanics from the Kerguelen Archipelago. Fusion results indicate that neon is isotopically primitive, whereas helium shows ...
An SEM, REE, and mineral Sm-Nd isotope study on olivine-plagioclase coronas in the Vestre Dale gabbro, Norway, was carried out in order to solve the temporal relationships within these coronas. It is demonstrated that in ...